[time-nuts] How to get PPS from ublox mini-PCI GPS to APU2 SoC serial port for ntpd

2016-08-13 Thread STR .
Hi, I recently bought 2 ublox PCI-5S mini-PCI GPS modules and have ordered a PCengines APU2C4 board I hope to install it in. Others have found it can provide PPS output http://emerythacks.blogspot.in/2013/01/u-blox-pci-5s-cheap-gps-module-for-your.html This is the x-64 AMD SoC by PCengines

Re: [time-nuts] NUT4NT: Four-channel All-frequency GNSS RF-to-Bits

2016-08-13 Thread Gregory Maxwell
On Sat, Aug 13, 2016 at 11:53 PM, Bob Camp wrote: > Hi > > It’s not real clear what the second chip on the board does. If it is just a > bit to Ethernet converter > then you are dealing with 2 bit data out of each of the four channels. You > aren’t just doing tracking > in that case ….4 channels

[time-nuts] NUT4NT: Four-channel All-frequency GNSS RF-to-Bits

2016-08-13 Thread Mark Sims
The NVS NV08C GPS receiver module is a rather nice little 32 channel GPS/GLONASS/SBAS receiver that has an output message that gives you the raw satellite bit streams. They can be had for around $60 bare module ($120 on a breakout board from sylphase.com). They also support carrier phase inf

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Charles Steinmetz
Bob wrote: Autodesk just bought Eagle. Things may change there in the future. Oh, good! So Eagle may become even harder to learn and use! ;-) [Before anyone posts flaming replies, please note the smiley-face above. I was an original user of AutoCAD starting back when it was still call

Re: [time-nuts] NUT4NT: Four-channel All-frequency GNSS RF-to-Bits

2016-08-13 Thread Bob Camp
Hi It’s not real clear what the second chip on the board does. If it is just a bit to Ethernet converter then you are dealing with 2 bit data out of each of the four channels. You aren’t just doing tracking in that case ….4 channels at 2 bits -> 8 bits per clock. Clock at 38 to 100 MHz. That co

Re: [time-nuts] NUT4NT: Four-channel All-frequency GNSS RF-to-Bits

2016-08-13 Thread Michael Wouters
This board just seems to be the RF front end for a GNSS receiver. You then have to do the whole business of acquiring and tracking the code, and then do the PVT solution, at which point you can make your own 1 PPS. Cheers Michael On Sunday, 14 August 2016, Gregory Maxwell wrote: > On Thu, Aug

[time-nuts] Subject: Re: Working with SMT parts

2016-08-13 Thread Michael Seibel
SMD manual assembly / re-rework is easily accomplished wearing surgeons glasses. Mine are KEELER with prescription lens and fold up 4 diopter telescopes - for me perfect. Also have a Nikon w/10 Mp digital camera; used only to document my findings and eliminate any "arguments". Seldom used. M

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Bob Camp
Hi Just to mess things up a bit: Autodesk just bought Eagle. Things may change there in the future. Bob > On Aug 13, 2016, at 1:03 PM, Clint Jay wrote: > > I'll throw Designs Park into the mix, it's a free program from RS > components and I *think* it generates gerber files. > > I've used

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Clint Jay
I'll throw Designs Park into the mix, it's a free program from RS components and I *think* it generates gerber files. I've used it for a couple of boards and got a grasp of it on a quiet afternoon. On 13 Aug 2016 16:05, "William H. Fite" wrote: > For me, the ideal solution is an eyeglass-mount

Re: [time-nuts] NUT4NT: Four-channel All-frequency GNSS RF-to-Bits

2016-08-13 Thread Gregory Maxwell
On Thu, Aug 4, 2016 at 11:08 PM, Daniel Mendes wrote: > > A new interesting toy soon to be crowdsourced: > > https://www.crowdsupply.com/amungo-navigation/nut4nt A shame, it looks like it can be externally clocked, but I don't see a way to get in and measure a PPS signal. Considering the increas

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Chris Albertson
I've been studying machine vision for years and now finally the prices are such that I can build my own systems. There are lots of ways to construct 3D models of the environment and I think humans use many of these. 1) Using binocular vision. We humans have two eyes set some distance apart, we

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread William H. Fite
For me, the ideal solution is an eyeglass-mounted surgical loupe such as this: http://www.surgitel.com/loupes/prismpro-line. There are several manufacturers. Long working distance, superbly corrected optics, no bino microscope or Mantis monstrosity cluttering up the bench. Not cheap but a lifetime

Re: [time-nuts] Mini ovens packaging

2016-08-13 Thread Magnus Danielson
Hi Guillermo! Nice to see you ask questions here! (Attila and I met Guillermo at the EFTS and had many nice discussions and nice time to hang out. He does his PhD in MEMS systems, which Attila refers to. I also met him at IFCS in New Orleans when he came up to me and Dr. Rohde and asked quest

Re: [time-nuts] Mini ovens packaging

2016-08-13 Thread Didier Juges
If you have to regulate over ambient temperature as high as 120C, you need an oven that regulates at a higher temperature, maybe 125 at least or 130C. You will have a lot of issues with long term reliability with something that operates 24/7 above 120C. Have you looked at a Peltier junction that wo

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Didier Juges
I did not know Futurlec accepted ExpressPCB files, so I checked. The equivalent to ExpressPCB mini board pro service (2 sided, solder mask and silk screen, 3 pieces, same size) is $86 + shipping and one week to shipment. ExpressPCB is $75 in 3-4 days in your mailbox including FedEx (they do offer

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Adrian Godwin
I use a beautiful Wild M3Z that I got at a good price from a British Aerospace auction. It does have the disadvantage that there's a very exact spot to place your eyes, but the image is superb. I typically start at the bottom end (6.5 x 10 x 0.5) but often use the other zoom levels (up to 40 x 10 x

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread wb6bnq
Hello Orin, Like I mentioned before http://www.futurlec.com/PCBService.shtml will accept the ExpressPCB program file and their prices are very reasonable compared to having the work done through ExpressPCB themselves. BillWB6BNQ Orin Eman wrote: On Fri, Aug 12, 2016 at 7:25 PM, Brooke

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Ian Stirling
On 08/13/2016 12:39 AM, Chuck Harris wrote: > A fairly large part of the population gets along just > fine with mono vision. Many choose it specifically > by getting contact lenses where one lens is near, and > one is far, or getting laser eye surgery to affect that > condition. > > That said, I

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Poul-Henning Kamp
In message , Chris Albertson writes: >1) Eagle cad > >2) Kicad I switched from Eagle to Kicad, and have used Seeed's PCB service with good results. Kicad got a major boost when CERN threw their weight behind it, and while Eagle is still slightly more polished in many ways, kicad is

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Chris Albertson
If you are looking for a free PCB layout program there are a few around. 1) Eagle cad https://cadsoft.io This one is the most popular by far. The free version is some limits, only two layers and only up to about 4 x 3 inch PCBs. Yes it can output Gerber files. For larger size PCBs and more lay

Re: [time-nuts] Working with SMT parts.

2016-08-13 Thread Orin Eman
On Fri, Aug 12, 2016 at 7:25 PM, Brooke Clarke wrote: > Hi Chris: > > ExpressPCB has very easy to use free software for schematic capture (later > used to check the board wiring) and software for board layout including > making custom components if their library of stock components does not have