beeSafe

BeeSafe: Developing a low-cost tracking device. Prototype on Raspberry Pi.
#beeSafe #UofG #openSource
#realtime #embedded
contact: [email protected]

[beeSafe @beeSafe_uofg]

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.

[beeSafe @beeSafe_uofg]

Some statistics on the repository😂 GREAT WORK TEAM!

[beeSafe @beeSafe_uofg]

353 commits later, the BeeSafe device is finally nearing completion 😀. TESTING! TESTING! TESTING!

[beeSafe @beeSafe_uofg]

An amazing project. Go check it out if you haven't already!

[signl @signlHW]

With the project coming to a close, we've produced some short videos showing off some of the real-time audio effects we've made for our unit

[beeSafe @beeSafe_uofg]

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

[beeSafe @beeSafe_uofg]

This text messages were sent from our pi. #GSM is still working in the UK.

[beeSafe @beeSafe_uofg]

That's a great setup. We are jealous of the equipment!

[bzzzbz - Digital video synth @bzzzbz_video]

Finally set up a small lab in the flat! Now we are ready for the final development rush for #RTEP
#workingfromhome #isolationdev #raspberrypi #bzzzbz #videosynth #audiovisual

[beeSafe @beeSafe_uofg]

Looking good!

[Pitch Perfector @PerfectorPitch]

Plotting Fourier Transforms of microphone input in realtime using a Qt chart-plotting GUI #WorkingFromHome #TheShowMustGoOn #Audio #Fourier #Qt #Microphone #MEMS #Karoke

[beeSafe @beeSafe_uofg]

@BerndPorr making sure we can continue working on our projects.

[beeSafe @beeSafe_uofg]

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.

[beeSafe @beeSafe_uofg]

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 ;)

[beeSafe @beeSafe_uofg]

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)

[beeSafe @beeSafe_uofg]

@OneManCeilidh @UofGlasgow @BzzzbzS @GloveLexicon @signlHW @PerfectorPitch As long as we have access to our lab we keep on working as usual. However, it's good to see @UofGlasgow taking this seriously.

[SMRG Glasgow @GlasgowSmrg]

@beeSafe_uofg brought the assembled board arrives into the lab just now! Very impressive work from the @UofGEngineering students and fantastic technical support! #PCB #soldering #embedded #electronics #raspberrypi

[beeSafe @beeSafe_uofg]

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

[beeSafe @beeSafe_uofg]

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.

[beeSafe @beeSafe_uofg]

We don't like breadboarding either. It has caused many problems due to bad connections.
Interesting article.

[hackaday @hackaday]

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

[beeSafe @beeSafe_uofg]

The PCB is back from production and ready for assembly. This is going to be a thought one.
#pcbetching #pcb #etching #electronics #soldering #challenge #smd #raspberrypi

[beeSafe @beeSafe_uofg]

This is similar to what we are currently working on. With a lot more functionality and not within our budget.

[DigiKey @digikey]

Quickly Implement a Remote Industrial IoT Cellular Endpoint Using an LTE Microcontroller and Router https://t.co/Ma7XfzEd3X

[beeSafe @beeSafe_uofg]

The PCBs for the first prototype are in production (expansion board for Raspberry Pi).