Re: ioio power

It does sound like a fried switcher, causing a low impedance path between 5V and ground. This is likely causing your 5V rail to sag, so it might explain why your Android won't connect. One way to hack around this problem is to desolder the switcher or the inductor. I would first verify this guess

Re: Announcing the Inventor's Kit for the IOIO-OTG

What is your goal? Do you want to use Processing or Java going forward? If Processing: your best bet is to try to follow the tutorial verbatim (i.e. use the SparkFun provided libraries, do everything from within the Processing IDE, etc.). If you have any problems, SparkFun tech support are the

Re: ADC code complexity?

Thanks! As for the ADON thing: I'm reluctant to do something that's specifically called out to NOT do. Indeed it sucks that the electrical specs don't mention the stabilization time, although given their sample code and empirical results, I see no reason to assume that what the current code does

Re: BaseIOIOLooper control flow and UART setup

This has nothing to do with UART. It must likely has more to do with the basic app structure. I recommend that you start with HelloIOIOService and evolve it to your own use case. You probably forgot something in the app event handlers or manifest etc. On Nov 8, 2015 7:05 PM, "Eric Solomon"

Re: Suitable ports for TTL-pulse reading?

You need a port that's both marked with "P" for being able to use the Pulse Input module and also surrounded by a circle, which means 5V-tolerant. On Nov 7, 2015 02:11, "Olli Pyynönen" wrote: > Hello folks! I've been using IOIO ports for commanding (as output signal) >

Re: DC motor

At a minimum (if you only care about running the motor in a single direction), you'd need a single transistor (typically, a FET). If you want bidirectional, you'd need an H-bridge driver. On Fri, Nov 6, 2015 at 1:21 PM, Zvonimir Udovičić wrote: > is there a way to control

Re: Threading in IOIO

In the IOIO codebase, there's an app called IOIOTortureTest which uses the IOIO in a multi-threaded environment. It is a little complicated, though, so I'm not sure if that's what you're asking for. What is the actual problem you're having? Can you send some small piece of code that you're having

Re: Version 5.05 Incompatible with Hardware ID: SPRK0020 Bootloader ID: IOIO0400 Firmware ID: IOIO0330

The IOIO0021, IOIO0022, IOIO0023, IOIO0030 IDs that you see are platform versions and not bootloader implementation versions. Below, where it says Bootloader V4.X, is where there's correspondence to the message you're reading from the log (IOIO0400 being device bootloader V4.00 in this case). On

Re: I can't ungrade IOIO OTG board's firmware

1. This typically happens when something is wrong with your firmware bundle. Either it is corrupt, or non-existent or whatever. 2. Just power-cycle the IOIO. On Tue, Oct 27, 2015 at 4:00 AM, Byungha Choi wrote: > I connect IOIO OTG board to PC and bootloader detected as

Re: 5V Uart setup

Pins 39, 40 are not 5V tolerant. You really shouldn't connect a 5V signal to them. They may already be damaged at this point. See this wiki page for information on how to interface the IOIO with 5V logic: https://github.com/ytai/ioio/wiki/Digital-IO Make sure to use 5V tolerant pins for both. You

Re: Magnetometer HMC5883L problems with IOIO

OK, I got around to reading the datasheet. The 0x3C/0x3D that you're sending is part of the address. You shouldn't send it. Also, make sure you check the return value of writeRead() or else you'd be reading garbage. On Sun, Oct 18, 2015 at 7:34 AM, wrote: > Yes, I have

Re: Magnetometer HMC5883L problems with IOIO

Did you remember pull up resistors on the bus? On Oct 16, 2015 8:50 AM, "Tyler Trombetta" wrote: > I went back and re-read the data sheet more thoroughly, and it appears I > was wrong. I just found the example on page 18 that details how to take a > single measurement.

Re: Hello IOIO app not working

You need to disable USB debugging for the IOIO to work with Android >= 4.2.2 On Oct 12, 2015 4:54 AM, "Fried panseller" wrote: > Same thing happens with my Note 2, but that's running 4.0.4 android, so i > had to lower the SDK to 4.0.3API15 > > On Monday, 12 October 2015

Re: Updating firmware on IOIO v1 without an old android device

The alternative would be to use a PIC programmer (or a second IOIO/OTG acting as one) and reflash a new bootloader+app image on the target IOIO. Those images are available as "hex bundles" on the Downloads page. This is essentially the same process they're following during production. On Tue, Oct

Re: IOIO-OTG add pins ?

How many pins do you need and what functions? If you just need GPIO and your timing requirements are not very tight, an I2C expander is indeed a good solution. There exist expanders for other functions too, just a matter of what your requirements are. On Oct 1, 2015 7:52 AM, "Ailgor Bot"

Re: Beginners IOIO guide using Android Studio?

Thanks for putting it together and for sharing! I've noticed that you're referring readers to the v5.04 software with your custom built jars. That is no longer required, since starting at v5.05 everything is already Gradle based and archives are available on Maven Central. This would also

Re: Ioio robot car with camera

In the open source community, people very often share their source code rather than the final artifacts so that people who use it can easily make any changes they desire, build it to whatever platform they desire using whatever told they desire. Building should be very straightforward (it took me

Re: What Android tablets can be powered while connected to the IOIO card?

I don't think "cannot be powered" is the right description of the problem you're having. It is more like they don't charge fast enough to keep up with the power draw of your specific application (e.g. it might require the screen to be constantly lit, etc). There are some tablets that have a

Re: When using a bluetooth USB in the IOIO, does it still need the current trimpot adjusted to find the BT USB like it does when connected to the Android phone?

Can you move this out of this thread, preferably to ioio-dev? On Sep 27, 2015 8:54 PM, "Vic Wintriss" wrote: > I'm trying to reflash a ioio board with the Pickit 3. How do I determine > which hardware version ioio board that I have? It seems that PGC and PGD > goes to

Re: When using a bluetooth USB in the IOIO, does it still need the current trimpot adjusted to find the BT USB like it does when connected to the Android phone?

The pot circuit has been introduced to allow limiting the charging current to the Android, mostly in battery-powered applications, where you don't want the Android to drain the main battery. Some Androids take is less well than others, in terms of compromising the connection reliability. On Tue,

Re: Ioio robot car with camera

Did your build succeed? What was the output? On Sep 21, 2015 6:02 AM, "משה חדד" wrote: > I could not find this file app-debug.apk > > -- > You received this message because you are subscribed to the Google Groups > "ioio-users" group. > To unsubscribe from this group and

Re: Ioio robot car with camera

This forum and other IOIO resources generally assume users are familiar with how to write Android/Java applications, compile them and install them. You can find more information on those topics online if you need help (outside the IOIO context). If you want to quickly download and build the app

Re: Ioio robot car with camera

In the front page of the link I sent there's a wiring diagram showing you how to connect the IOIO to the vehicle's motors. Is that what you're asking about? On Sat, Sep 19, 2015 at 5:12 AM, משה חדד wrote: > Yeah that's what I've seen, with this I build the project. But I

Re: Ioio robot car with camera

Does this help? https://github.com/akexorcist/IOIO-CameraRobot On Mon, Sep 14, 2015 at 8:34 AM, משה חדד wrote: > Hey, I've got to build electronics project. I think the car is powered by > a smartphone and the car will be a camera (smartphone) and a smartphone >

Re: Maximum of (Pulse)Inputs?

Sorry for responding late. In case it matters, the IOIO is potentially capable of up to 9 single-precision PulseInput, where every pair of single precision can form a double precision. For simplicity, I chose to expose this as 3 single + 3 double, but that's strictly an arbitrary software

Application firmware v5.06 and Device bootloader v4.02 released

A minor firmware release including: 1. A small bug fix for better handling of corruption on UART RX (handling *valid* input worked OK before the fix). 2. Better handling of oscillator calibration (matters almost exclusively for manufacturers). 3. Improved reliability of detecting

Re: Display analogue input value using HelloIOIOSwing for pc

Have your GUI code expose a setAnalogReading(float value) method, and have the IOIO code call that method. If there's any requirement in Swing like in Android) that all GUI operations are done from the same thread, use some kind of a a communication mechanism (such as a synchronized queue) to send

Re: Display analogue input value using HelloIOIOSwing for pc

This forum is not necessarily the best place for general swing questions. Have you seen this? https://docs.oracle.com/javase/tutorial/uiswing/components/label.html Or is your question about how to read the value from the AnalogInput rather than how to display it? On Sep 11, 2015 11:24,

Re: Beginners IOIO guide using Android Studio?

Eclipse is deprecated for IOIO. Android studio is now the recommended IDE. Not quite a step be step guide, but this should get you going: https://github.com/ytai/ioio/wiki/Building-IOIO-Applications-With-Gradle On Sep 7, 2015 8:36 AM, "Fried panseller" wrote: > Hi, I

Re: Init and reading sensor error handling

Not sure what you mean by re-initialized, this sensor doesn't seem to have any initialization associated with it. Anyway, if you want the readings to take place in parallel, just create a separate thread for each sensor and have those threads report their readings (possibly with timestamps) to a

Re: HelloIOIO + Eclipse

You're welcome to edit the wiki, I'll appreciate you doing so. If you're not ready to move, you can use v5.04 of the software bundle, which is intended for Eclipse. Note, however, that over time bug fixes and new features will not be backported. Also note that with some effort it is possible to

Finally: IOIO software stack is using Gradle, Maven and Android Studio

Friends, this has been a long journey... I'm pleased to announce the availability of an easier, better way to build Android and PC applications using the IOIO. This has been a long overdue on my side, having been left behind the evolving technology. Starting at the v5.05 release, which I have

Re: Ultrasonic Sensors - more than three not working

Thanks! This is indeed the correct issue. As a tip to the OP, whenever things fail, look at the logs which often explain what had happened. The wiki is not intended to be a rigorous reference documenting every little feature. The wiki is intended to give the user some general orientation about how

Re: IOIO Service problem

This has been discussed many times recently. I've made some fixes in this area which have not yet been released. However, they are on GitHub master. People have reported these fixes to work well for them. Make sure you're carefully reviewing how HelloIOIOService is structured and have your app

Re: Can't start the service app without reconnect the IOIO to my Android?

Yes. This has been fixed, but not yet released. You can check out the latest code from the master branch on GitHub for the time being. On Aug 6, 2015 2:39 AM, Ole Tetzschner ole.tetzsch...@gmail.com wrote: Hey Ytai Any progress on this AOA Service-problem? Do you by chance have an updated

Re: Can't start the service app without reconnect the IOIO to my Android?

-06 16:19 GMT+02:00 Ytai Ben-Tsvi yta...@gmail.com: Yes. This has been fixed, but not yet released. You can check out the latest code from the master branch on GitHub for the time being. On Aug 6, 2015 2:39 AM, Ole Tetzschner ole.tetzsch...@gmail.com wrote: Hey Ytai Any progress on this AOA

Re: Using android mini computer with IOIO ?

Does it have to be Android? Otherwise, you can use a raspberry pi or similar. On Aug 4, 2015 3:30 AM, heikki.wa...@kolumbus.fi wrote: Hello ! I have an IOIO project, where IOIO and an android phone are place in the mobile vessel, moving on the water. On the land I have an android tablet, that

Re: Using Multiple IOIO OTG Boards Question and Some Friendly Suggestions

If you're anxious to get started and can't wait for an official release, check out the gradle branch on github. If you run gradle build it will produce the jars/aars for you and the example applications demonstrate how you should author your apps as far as integrating with the IOIO libraries.

Re: IOIO OTG Board - The first launch of my app makes only a connection board of some seconds. I need to restart the app manually to get it right functioning.

. Lo. Le 22 juil. 2015 à 01:27, Laurent Turnauer laurent.turna...@gmail.com a écrit : Ok I’ll try it. Thanks for advice. Lo ; ) Le 22 juil. 2015 à 01:25, Ytai Ben-Tsvi yta...@gmail.com a écrit : Are you able to test with a beefier supply or at least higher voltage? I'm concerned

Re: TWI communication between IOIO and Arduino uno

I'm not familiar enough with the Arduino library to be sure, but the fact that you're writing from both handlers is probably wrong. Apparently, you're receive handler should Wire.read() as many bytes as the argument specifies, and you should do writes only from the request handler. Also, how are

Re: reaching to internal registers of pic24f

There is no such functionality implemented. What are you trying to accomplish? On Fri, Jul 31, 2015 at 6:09 AM, Bedri Bahtiyar bilu...@gmail.com wrote: Hi every one. I'm new in android and ioio ogt board. Is there any way to reach to internal registers of PIC 24F. For example, if i want to

Re: A Fix for IOIO Bluetooth Lib(Android 4.2-4.4.4)

Thanks! Can you please send a pull request, explaining clearly what is the observed problem and what this fix does? I'll be happy to merge it. On Jul 25, 2015 6:46 AM, Emre gule...@gmail.com wrote: I forgot to mention that it is for v5.00 -- You received this message because you are

Re: Help: Controlling Multiple IOIO Boards

Something like: IOIOLooper createIOIOLooper(String type, Object extra) { if (type.equals(ioio.lib.android.bluetooth.BluetoothIOIOConnection)) { return new MyBluetoothLooper(); } else { return new MyUsbLooper(); } } Where MyBluetoothLooper and MyUsbLooper are two classes you

Re: Help: Controlling Multiple IOIO Boards

Yeah, I did develop almost all of this myself. When you're excited about something time can be found, especially if you're willing to put up with not sleeping for a while :) In any case, I've been working on the IOIO on and off for almost 5 years now. Enjoy! On Wed, Jul 22, 2015 at 10:30 AM,

Re: Charge mobile phone while in host mode and attached to ioio board.

This is impossible, at least with the current state of things. Why do you care that the phone is the host? If the IOIO is the host, it will charge the Android and communicate with it just as well. On Tue, Jul 21, 2015 at 6:56 AM, Geerapa Wareerad geevir...@gmail.com wrote: Hello Ytai, I'm quite

Re: ioio.lib.android.device.DeviceConnectionBootstrap - Are you missing a call to unregisterReceiver()

Could it be that you overloaded one of the lifecycle events on your activity (e.g. onStop()) and forgot to call the super's method (e.g. super.onStop())? There's no reason why what you're describing shouldn't work. I'm doing it all the time. On Tue, Jul 21, 2015 at 10:44 AM, Lo

Re: IOIO OTG Board - The first launch of my app makes only a connection board of some seconds. I need to restart the app manually to get it right functioning.

Ben-Tsvi yta...@gmail.com a écrit : AND is the CHG pot on the IOIO all the way clockwise? On Tue, Jul 21, 2015 at 4:12 PM, Ytai Ben-Tsvi yta...@gmail.com wrote: I'm curious to see what you find with the new library. Also, what power supply are you using? Could we be seeing a dropout resulting

Re: Help: Controlling Multiple IOIO Boards

If instead of overriding createIOIOLooper() you override createIOIOLooper(...) you'll get two arguments that allow you to distinguish the IOIOs by their connection. The multiple IOIO scenario should work fine. If you're using more than one IOIO over Bluetooth you may run into some flakiness, which

Re: IOIO OTG Board - The first launch of my app makes only a connection board of some seconds. I need to restart the app manually to get it right functioning.

AND is the CHG pot on the IOIO all the way clockwise? On Tue, Jul 21, 2015 at 4:12 PM, Ytai Ben-Tsvi yta...@gmail.com wrote: I'm curious to see what you find with the new library. Also, what power supply are you using? Could we be seeing a dropout resulting from a power dip? On Tue, Jul 21

Re: Getting started with the IOIO-OTG on PC

Pretty simple, you're using a v5.x software with a v3.x firmware. Upgrade your firmware as per: https://github.com/ytai/ioio/wiki/IOIO-OTG-Bootloader-and-IOIODude On Mon, Jul 20, 2015 at 1:31 AM, R.S. Agwan rsagw...@gmail.com wrote: Hi all, I've got a slightly older IOIO-OTG from SparkFun

Re: ADC for calculating RMS value

I don't see how sampling faster is going to improve your accuracy. The +/-100mA that you're seeing is about you might expect of your current signal properties and a 10-bit ADC, regardless of sampling rate. In other words, if the problem you're trying to solve is that of increasing precision,

Re: ADC for calculating RMS value

That won't do it in our case, as the different buffer slots are used for different channels rather than consecutive samples of a single channel. In this point in the code: https://github.com/ytai/ioio/blob/master/firmware/app_layer_v1/adc.c#L192 the sample value for the i'th channel is obtained.

Re: ADC for calculating RMS value

I think I understand now. So: 1. If you're really intending to measure a signal as high as 30A, the output voltage will be around 4.5V, which exceeds the range the ADC is willing to accept (0-3.3V). 2. Unless the sensor has a built-in amplifier, it is likely that it has a fairly

Re: ADC for calculating RMS value

Before we begin, can you please specify the signal you're trying to measure better? Specifically, its min and max (instantaneous) voltage, and its bandwidth would be important. Based on that I can recommend a way of measuring it. On Tue, Jul 14, 2015 at 3:06 PM, Julio Castellanos

Re: Beginner Comms Question

I don't understand your setup well enough. Are you connecting over BT or USB? What's this HDMI you're referring to? Does pairing work with the phone? With a PC? The IOIO Hardware Tester app is not my own. I cannot vouch for its reliability. You can use HelloIOIO.apk if you want to have a reference

Re: IOIO and I2C using MPL3115A2

I didn't read all the way through. Seems to me like you have at least a problem with how reading/writing of registers work. I think what you need is something along the lines of: byte readRegister(byte index) throws ... { byte[] request = new byte[] { index }; byte[] response = new byte[1];

Re: Recommended Bluetooth dongle for interfacing an IOI OTG with an LG-G3 smartphone

There's a page on the wiki listing supported dongles. On Jul 10, 2015 3:32 PM, shai frenkel zsfren...@gmail.com wrote: Hi, I am looking for a recommended Bluetooth dongle for an LG-G3 smartphone. I bought a broadcom based dongle which shows up at the Bluetooth scanning phase in the phone as

Re: IOIO OTG Board - The first launch of my app makes only a connection board of some seconds. I need to restart the app manually to get it right functioning.

Two things to look at: 1. Do you see this behavior occurring with the precompiled example applications? If not, what is different about you app that causes the problem? 2. There were a bunch of fixes to OpenAccessory mode recently that are not yet included in the release package, but have been

Re: Chromovore Project

Thanks for sharing that here. I previously saw the youtube video, but not the blog post. Great project! Definitely keep us posted whenever you're adding new features to it. On Thu, Jul 2, 2015 at 5:51 PM, Karim Virani pondersom...@gmail.com wrote: Just wanted to share the chromovore bot project

Re: IOIO sprk0016 which USB cable to use to update the dude?

The IOIO v1 that you have can only be updated using IOIOManager on Android. IOIO-OTG uses ioiodude and a PC. Unfortunately, the IOIOManager way only works with Android 4.1. So you'd need to get one of those if you want to be able to upgrade. An alternative is to use a second IOIO or a PIC

Re: Detect if current is flowing in external electrical circuit using IOIO

Your question has actually little to do with the IOIO. The IOIO can interface mostly any circuit that other microcontrollers can. What you're really asking is about current sensing. There are two primary ways to measure current: - Putting a (shunt) resistor on your current path and measuring

Re: Sense check on DIY ioio sheild

It's fine. What I normally do is pull the control line down to ground and use the pins in push-pull (normal) mode. Your setup is useful if you want to operate in open drain mode to generate a 5V signal. In practice, I've never seen a servo that minds feeding off of a 3.3V control signal. Pulling

Re: Non-standard baud rates

UART can operate at any rate that is 4MHz/N, with N being [1..65536]. On Jun 24, 2015 8:53 AM, Glenn gal...@gmail.com wrote: Hi, Does the IOIO support non-standard baud rates for UART? I would like to use the board to connect to my car's serial interface, which is 8192 baud. Thanks, Glenn

Re: IOIO Host mode - HelloIOIO works - my app doesn't

The next logical step is to try building HelloIOIO from source. Then figure out what's different in your app. The main things required for IOIO in device mode support are including the IOIOLibAndroidDevice library and some manifest declarations. On Wed, Jun 17, 2015 at 12:23 PM, James Warner

Re: IOIO Host mode - HelloIOIO works - my app doesn't

Either run it on a separate thread or interrupt the current thread after some timeout. Search this forum for TimerTask. Your question has been asked and answered several times. On Wed, Jun 17, 2015 at 4:25 PM, James Warner jameswarn...@gmail.com wrote: My mistake, It was working, an

Re: MIT app inventor

Frequencies (Sound Pins) on the IOIO for smoother operation of the Steppers? On Sat, Jun 13, 2015 at 6:43 PM, Ytai Ben-Tsvi yta...@gmail.com wrote: How does IOIO Inventor work? Does it have APIs for the motor control libraries? Is it specifically designed for interacting with AppInventor

Re: Generating AAR file for use in android studio

I'm not going to answer the AS questions, since as I said this is not yet completed. You asked for AARs and you got them. If you want more help, use Eclipse for now. Regarding debugging, you have several options. The easiest one is using Bluetooth for the Android : IOIO connection and then USB for

Re: device mode

Your question is not very clear. Are you trying to prevent the Android from drawing power from an external battery? If so, using device mode is indeed a good solution, if your Android has support for it. If you don't want the IOIO to use the phone battery, power it externally. On Thu, Jun 11,

Re: MIT app inventor

How does IOIO Inventor work? Does it have APIs for the motor control libraries? Is it specifically designed for interacting with AppInventor? On Fri, Jun 12, 2015 at 5:50 AM, tommazur...@gmail.com wrote: Hi all, I am new to this discussion , but saw the post thought I could contribute my

Re: ioio for 220 volts applications (industrial point of view)

You need to use a device called relay, which is essentially a (low) voltage controlled switch. You're question indicates that you don't have a lot of experience with electricity, so I would strongly advise against trying to mess with high voltage yourself. I would imagine there should be relays

Re: Lidar Lite - I2C setup

up to 80 cm or so, after that I get negative values. Any suggestions? Best regards, Gabor On Sat, 6 Jun 2015 07:52 Ytai Ben-Tsvi yta...@gmail.com wrote: I2C is easy. Once you have implemented two near trivial methods, namely: byte readRegister(byte regnum) and void writeRegister(byte

Re: Lidar Lite - I2C setup

I2C is easy. Once you have implemented two near trivial methods, namely: byte readRegister(byte regnum) and void writeRegister(byte regnum, byte value) You can forget about I2C and start talking to the chip according to the information provided in

Re: Programming IOIO-OTG using PICKIT 3

What is the problem you're facing? And why do you need to program it with a programmer as opposed to using the pre installed bootloader and programming over USB? On Jun 4, 2015 7:24 AM, Dinesh Kumar dineshkumar.smd...@gmail.com wrote: Hello., I am trying to program IOIO-OTG(PIC24FJ256GB206)

Re: Programming IOIO-OTG using PICKIT 3

mode alone. while programming IOIO-OTG to PICKIT3 (in programmer to go mode),PICKIT3 shows some error. Error message:status led blinks red in a pattern like 12 12 12 12.. can u pls explain source for the problem and solution to rectify it? On 5 June 2015 at 00:35, Ytai Ben-Tsvi yta

Re: Generating AAR file for use in android studio

How so? The major version of the firmware always needs to be = major version of IOIOLib. In your case you're using a v5.x IOIOLib with a v4.x firmware. On May 29, 2015 3:30 AM, Egbert Boer egbertthe...@gmail.com wrote: This is pretty self-explaining. Upgrade your firmware... : ioiolib:

Re: Generating AAR file for use in android studio

Thanks for sharing that. I'm actually in the middle of converting everything to Gradle, then adding AS support and upload packages to Maven, so hopefully your tutorial will not be needed for much longer. As for your questions: - *android app future.usb.usbmanager not found*: you need to use

Re: Is there a CAN bus shield for IOIO OTG?

Can you part a link to said Arduino shield? On May 27, 2015 8:01 AM, nourIroka nour.92im...@gmail.com wrote: Hello everyone, First of all thank you for the amazing board... I just got the IOIO OTG and a part of my project consists of extracting data from the vihicule's CAN-BUS and

Re: geeetech ioio otg : waiting for underlying connections

Thanks for diagnosing this and thanks for making the wiki edit! In the future, I recommend one of the official vendors (SparkFun or SeeedStudio), as I can guarantee that their production practices are excellent and that each individual board gets tested before being shipped. They are also the only

Re: MIT app inventor

There was talking about this before, but to the best of my knowledge, nobody has yet implemented IOIO blocks for AI. On Mon, May 25, 2015 at 5:26 AM, joe el khoury elkhou...@gmail.com wrote: Dear Ytai, Is it possible to use app inventor for IOIO? It may save a lot of time. If yes, how?

Re: geeetech ioio otg : waiting for underlying connections

First, there's a udev rule on the Downloads page, just in case you're not sure about permissions etc. If you cat or screen the device file, are you getting anything? Also, have you tried a configuration wipe (see the ioiodude wiki page)? Last, why would you buy from geeetech when you have a lot

Re: NewBe in TWI with Processing as IDE

Great! My guess would be that the resistors pull down on the address pins and up on the alert pin. On May 23, 2015 14:30, Chris beilbtpen...@gmail.com wrote: Well yeh i just checked and the smd are not on SCL or SDA thanks ! Now i see something on the screen ! I just thought that the smd were

Re: NewBe in TWI with Processing as IDE

Your request should be { 0x00 } and the response is 2 bytes. The actual transaction will look exactly as in page 17. Why do you think this module has pull-ups? I haven't found a schematic, but it is generally a bad practice to include pull-ups with the slave. In other words, it is likely that you

Re: Getting IOIO to restart after resuming an activity

I'm aware that whether to destroy an activity is at the discretion of the OS. From the examples you posted it seems like it might be what's making the difference between being able to reconnect and not being able to reconnect. If that's indeed the case, I'm wondering what effect the destroy/create

Re: Voltage sensing for low battery

The ADC (analog to digital converter) works by first briefly charging a small internal capacitor to the pin voltage, then disconnecting it from the pin and measuring its voltage. With high impedance on the input, the internal cap might not fully charge and also any leakage current would

Re: Speed Servo motor control via IOIO OTG

Your original question was slightly misleading. This motor is not a servo, but a brushless motor. Heikki's answer above is correct. This mostly has nothing to do with the IOIO. The IOIO-related piece is using a PwmOutput to generate a 50Hz PWM signal, with the pulse width varying between 1-2ms for

Re: NewBe in TWI with Processing as IDE

The addresses for this module seem to be 0x78 until 0x7F (depending on the address selection pins). You need to always write 1 byte (the address of the register), then read back two bytes for the register value. The datasheet goes into a lot of detail on the specifics of I2C, which are all already

Re: NewBe in TWI with Processing as IDE

A couple of observations: 1. You're passing a 1-byte request to writeRead(), but specify a length of 2. This should throw an exception, not sure where it gets lost. 2. I recommend checking the return value of writeRead(). When it is false, it means your device NAK'ed and the response

Re: Getting IOIO to restart after resuming an activity

The method that emits the main activity restarting: what's actually happening there? Is it possible that some event that needs to propagate to the IOIO framework doesn't make it through? Looks like the destroy()/create() sequence is what makes things work. Can you debug a little and figure out

Re: Speed Servo motor control via IOIO OTG

As fast as possible is not very descriptive. Please specify which events you want to limit the time between (for example, maximum time between PWM.setPulseWidth() is called and until the servo arm starts moving) and how much time you're allowing this to take. Based on that I can come up with an

Re: IOIO-OTG with JavaFX

With earlier versions of Android, Java 6 want supported. This is no longer the case. On May 19, 2015 5:49 PM, webb.jonat...@gmail.com wrote: I am considering using the IOIO-OTG for a project which will use a JavaFX GUI on both PC and Android. I have seen on github.com/ytai/ioio/wiki that

Re: Getting IOIO to restart after resuming an activity

You seem to have omitted the logs generated by IOIOLib itself. Can you include them? Which version of the library is this? What type of connection are you using between the Android and IOIO? On May 19, 2015 2:51 PM, hwut fit...@gmail.com wrote: Sure, here is a log of the case that causes the

Re: IOIO OTG not working with an external power supply

Seems like your voltage regulator is fried. Can you provide some details on what power supply you're using and how it was connected to the IOIO (i.e. length of wires, etc.)? On Mon, May 18, 2015 at 3:28 AM, 'M. A.' via ioio-users ioio-users@googlegroups.com wrote: Hello IOIO fans, I am using

Re: NewBe in TWI with Processing as IDE

Sorry, I just realized the the Processing stuff doesn't wrap the IOIO Java API, but just allows direct access. In that case, you should have all the information you need here: https://github.com/ytai/ioio/wiki/TWI On Mon, May 18, 2015 at 10:03 AM, Chris Do beilbtpen...@gmail.com wrote: Here's

Re: Getting IOIO to restart after resuming an activity

Can you add some logs and figure out the exact sequence of lifecycle calls (e.g. onStart(), onStop(), etc.) in your scenario? Also include the relevant IOIO logs so we can see whether a connection is closed properly before switching. On Mon, May 18, 2015 at 3:15 PM, Tiffany Hwu fit...@gmail.com

Re: IOIO board isn't recognized by my Moto E phone

Make sure the A side of the cable is at the IOIO and the B side at the phone. This will cause the IOIO to act as host. At this point, you should at least see the phone charging. If it doesn't: - Check the power supply - should be at least 5V and at least 1A to be on the safe side. -

Re: IOIO board was working, now isn't, yellow status LED flashes on and off

What is the current bootloader / application firmware versions you have on the board? Hint: if you look at the logs left by any IOIO app if will show that. Also: have you carefully read the IOIO Manager wiki page https://github.com/ytai/ioio/wiki/The-IOIO-Manager-Application? On Tue, May 12, 2015

Re: Incompatible IOIO firmware

Just upgrade the firmware to v5.x. There've been lots of fixes since v3.30, as well as some cool new features. On Wed, May 13, 2015 at 8:55 PM, Leonard inextricable...@gmail.com wrote: Yes, that was it, I needed to downgrade to 3.30. I found a description in the SparkFun website that said it

Re: IOIO flip-chart plotter ... little help needed

This parameter is unrelated to the physical setup. What it means is what is the path's sampling rate, that is, the drawn curve is gets broken into many small line segments, connecting the dots that are samples of the path in regular time intervals. stepTime is those intervals. On Fri, May 8, 2015

Re: NewBe in TWI with Processing as IDE

You can try SparkFun tech support. They are the one maintaining the Processing libraries. I'm not familiar enough with the Processing stuff to know how exactly it exposes the underlying Javaj-based IOIOLib. On Mon, May 11, 2015 at 10:50 AM, Chris Do beilbtpen...@gmail.com wrote: Hello

Re: Voltage sensing for low battery

1. The analog input cannot measure and shouldn't be exposed to higher than 3.3V. 2. If you're using a resistor divider as recommended, I recommend a 1uF or greater ceramic capacitor in parallel to the low side resistor. Otherwise, use smaller resistors (like, a couple of kOhm), but that will come

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