From today, the @UofGEngineering buildings are closed. Our hardware is finished and tested, only missing a nice casing.
We're all set up for remote development. Here's a picture of the current setup at one of our flats.
On another note: some of our friends participated in the @WeeklyGameJam. A great way to spend your time if you're stuck at home.
We are not bored, but if you are: a new one is starting tomorrow.
This game was developed in 6 days.
https://t.co/VJlHMx1ng8
Finally, we discovered the problem: our test program was not sending the command line termination character <CR>. 🤦🏻♀️ I guess we're all a bit tired.
The good news is: everything is working.
Some good news for once. After some successful initial HW testing, we had one small, easily fixex problem: the voltage translator (from PI 3.3V to ublox 1.8V UART) was configured the wrong way round 🙈. Luckily we had some 0 ohm resistors in that area anyway. #planedmistake ;)
The second problem needed more effort and use of a #oscilloscope. The ublox module only echoed our commands and didn't answer them. (that's why you can still see the blue wires attached to the RX and TX lines)
The first fully soldered PCB. This time, the PCB was produced using the milling process, which is more precise.
Production and assembly was done at University of Glasgow.
The smoke test is set for tomorrow :S
#PCB#soldering#embedded#electronics#raspberrypi#ublox#beeSafe
Failure. Unfortunately, soldering the u-blox module didn't go so well. Even though we got amazing help from the staff at UofG.
On the bright side, we got to test the power supply circuit.
The next version will be with a soldering mask for the SARA-G350 module.
Don’t Scrape Magnet Wire, Do This Instead
[Tom] doesn’t much like breadboarding. He prefers to wire up prototypes with perfboard and solder point-to-point with enameled magnet wire. That may sound troublesome to some of you, but [Tom] has come up with a… https://t.co/hzKYO09uhl