Re: [time-nuts] Temperature (environmental) sensors

jim...@earthlink.net said: > I'm kind of curious about their "UI".. hold CapsLock? how does this device > manifest itself to the host computer? I saw a mention of HID, so it is > emulating a keyboard? I have a couple of the non-Gold versions. Plastic with a push button. They have one

Re: [time-nuts] Temperature (environmental) sensors

Yo jimlux! On Thu, 5 Jan 2017 12:21:44 -0800 jimlux wrote: > I'm kind of curious about their "UI".. hold CapsLock? how does this > device manifest itself to the host computer? I saw a mention of HID, > so it is emulating a keyboard? I received serveral off list

Re: [time-nuts] Temperature (environmental) sensors

Yo jimlux! On Thu, 5 Jan 2017 12:21:44 -0800 jimlux wrote: > > http://www.pcsensor.com/usb-hygrometer/temperhum.html > > I'm kind of curious about their "UI".. hold CapsLock? how does this > device manifest itself to the host computer? I saw a mention of HID, > so it

Re: [time-nuts] Temperature (environmental) sensors

On 1/5/17 11:15 AM, Gary E. Miller wrote: Yo All! I am surprised that the TEMPer and TEMPerHUM have not been mentioned yet. They are cheap reliable USB temperature sensors. The TEMPerHUM adds a humidity sensor. I have several TEMPer's running to log room temp around NTP servers. The basic

Re: [time-nuts] Temperature (environmental) sensors

Yo All! I am surprised that the TEMPer and TEMPerHUM have not been mentioned yet. They are cheap reliable USB temperature sensors. The TEMPerHUM adds a humidity sensor. I have several TEMPer's running to log room temp around NTP servers. The basic TEMPer reads to 0.1°F is only $9:

Re: [time-nuts] Temperature (environmental) sensors

Right on the page at adafruit there is a downloads link. This gets you to software read data from the board. It uses SPI Use one of those $3 arduino nanos to talk spi to the sensor and USB to a computer. The linked software does that > On Jan 4, 2017, at 11:32 AM, Dan Kemppainen

Re: [time-nuts] Temperature (environmental) sensors

ylor" <david-tay...@blueyonder.co.uk> >> To: "Discussion of precise time and frequency measurement" >> <time-nuts@febo.com> >> Subject: Re: [time-nuts] Temperature (environmental) sensors >> Message-ID: <076CCA551DC142C2A8D93CF02A

Re: [time-nuts] Temperature (environmental) sensors

To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Subject: Re: [time-nuts] Temperature (environmental) sensors Message-ID: <076CCA551DC142C2A8D93CF02A4AD1A3@Alta> Content-Type: text/plain; format=flowed; charset="UTF-8"; reply

Re: [time-nuts] Temperature (environmental) sensors

I like the Bosch BME280 conneced to a Raspberry PI. https://learn.adafruit.com/adafruit-bme280-humidity-barometric-pressure-temperature-sensor-breakout/pinouts https://github.com/adafruit/Adafruit_Python_BME280/blob/master/README.md -- Björn Some performance plots are

Re: [time-nuts] Temperature (environmental) sensors

From: Bob Camp <kb...@n1k.org> Date: 03/01/2017 19:36 (GMT+01:00) To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] Temperature (environmental) sensors Hi There’s always the “cool factor” of higher resolution. App

Re: [time-nuts] Temperature (environmental) sensors

PT105 4 channel PRD interfaces. Robert G8RPI. From: jimlux <jim...@earthlink.net> To: time-nuts@febo.com Sent: Tuesday, 3 January 2017, 15:22 Subject: Re: [time-nuts] Temperature (environmental) sensors On 1/3/17 7:08 AM, Tom Van Baak wrote: > I have some high-end te

Re: [time-nuts] Temperature (environmental) sensors

Hi Tom: I've used the Onset data loggers and they are very inexpensive and work well. As a plus they are PIC based so hackable. Don't know about accuracy, resolution http://www.onsetcomp.com/products/data-loggers http://www.prc68.com/I/Hobo.html http://www.prc68.com/I/GPend.shtml The

Re: [time-nuts] Temperature (environmental) sensors

Yesterday hackaday had a link to a humidy sensor comparison: http://www.kandrsmith.org/RJS/Misc/Hygrometers/calib_many.html Em 03/01/2017 16:03, Mark Sims escreveu: I did a LOT of testing environmental sensors when I built my ultrasonic anemometer weather station that is part of a rocket

Re: [time-nuts] Temperature (environmental) sensors

The sensor Jim linked : Temp/humidity with I2C interface https://www.adafruit.com/products/1293 looks good - packaged, high res temperature, etc. It's not 'complete' in that it's only a sensor, but you only have to attach a USB-I2C adapter. Probably less work than connecting up the sparkfun

Re: [time-nuts] Temperature (environmental) sensors

Hi There’s always the “cool factor” of higher resolution. Apparently it’s not enough of a issue to make it a worthwhile market to serve. Based on what has been tossed around, it sounds like an Arduino with some bits plugged in is the low cost leader. 3D print up and enclosure and you have

Re: [time-nuts] Temperature (environmental) sensors

The good news is if the dataloger you get has a mems pressure sensor, you will have a high precision temperature sensor, whether or not the product software provides that resolution to you is another matter. In addition to the piezo-resistive bridge being mechanically sensitive to diaphragm

[time-nuts] Temperature (environmental) sensors

I did a LOT of testing environmental sensors when I built my ultrasonic anemometer weather station that is part of a rocket launch control system. The best humidity sensor I found was the DHT21/SHT11/AM2301/SHT15. They run around $3 and can also provide temperature to 0.1C res / 0.5C

Re: [time-nuts] Temperature (environmental) sensors

On 1/3/17 9:15 AM, Bob Camp wrote: Hi There is an ever increasing pool of good sensors to put into something like this. (More so for temperature and pressure. Humidity still is a bit of an issue.) There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising that there

Re: [time-nuts] Temperature (environmental) sensors

Hi There is an ever increasing pool of good sensors to put into something like this. (More so for temperature and pressure. Humidity still is a bit of an issue.) There’s not a lot to interface between the sensor and a USB “chip”. It’s surprising that there aren’t more cheap / high accuracy

Re: [time-nuts] Temperature (environmental) sensors

These https://www.adafruit.com/products/381 are .0625C resolution, 1-wire interface (temp only) This one https://www.adafruit.com/products/642 has Teflon insulation, for use at higher temps Or this one, Temp/humidity with I2C interface https://www.adafruit.com/products/1293 On Tue, Jan 3, 2017

Re: [time-nuts] Temperature (environmental) sensors

All these (including the one I linked) seem to be 0.5C only. This one gets to 0.2C : http://www.ti.com/tool/hdc1010evm On Tue, Jan 3, 2017 at 4:09 PM, Paul Alfille wrote: > If you don't mind using 1-wire sensors, there are many nice choices, like: > >

Re: [time-nuts] Temperature (environmental) sensors

If you don't mind using 1-wire sensors, there are many nice choices, like: http://www.embeddeddatasystems.com/Environmental-Sensors_c_44.html for temperature/humidity/barometric pressure... On Tue, Jan 3, 2017 at 10:22 AM, jimlux wrote: > On 1/3/17 7:08 AM, Tom Van Baak

Re: [time-nuts] Temperature (environmental) sensors

On 1/3/17 7:08 AM, Tom Van Baak wrote: I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: https://www.sparkfun.com/products/retired/10586 Replaced by

Re: [time-nuts] Temperature (environmental) sensors

I haven't used this current generation of loggers (I do have a couple of older RS232 units) but there's quite a range at https://www.lascarelectronics.com/markets/environmental/ On Tue, Jan 3, 2017 at 3:08 PM, Tom Van Baak wrote: > I have some high-end temperature and

[time-nuts] Temperature (environmental) sensors

I have some high-end temperature and pressure instruments. But for casual use in my home and mobile timing lab I use Sparkfun Weather Stations. The old URL is: https://www.sparkfun.com/products/retired/10586 It's USB, talk-only, one reading a second, temperature, pressure, humidity --