My students often blame the photon when their software does not work, which is silly since there are so many other things that might be wrong, however after teaching 3 semesters using the Photon it is possible that the occasional photon pin might be messed up. Has anyone made a photon test PCB and i…

At this topic you can find the eagle schematics for the photon etc [image] Eagle library for spark core and photon General Hi, I understand that the design work for the cores was done using Eagle. Can anyone tell me if there are Eagle libraries for the spark core and pho…

@peekay123 with all those libraries you have converted to the particle, can you think of anything that uses a really cheap chip like: https://www.digikey.ca/product-detail/en/microchip-technology/PIC12F1822T-I-SN/PIC12F1822T-I-SNCT-ND/5013533 that connects to the photon using all three types of se…

@rocksetta , How about designing a simple test jig that connects two photons together? You have your “teacher” photon which is a known working unit. If you test communications back and forth between that and a “student” photon, then you can be confident that the “student” photon is working. Separ…

[image] cyclin_al: How about designing a simple test jig that connects two photons together? Absolutely a great idea. Don't need to buy any chips etc I like it, but not really sure how to do the teacher - student (master-slave) protocols with uART, SPI and I2C but I like the concept ... ... …

@rocksetta , making a jig with a known-good Photon and a target Photon makes sense. For UART testing, a simple loopback (TX connected to RX) is all that’s needed on the tested Photon. Otherwise, a simple echo test between the testing and the tested Photon is good as well. The Photon now supports b…

So I have started to design my Photon Testing PCB board. Actually presently working on the code to flash to the Photon in question. I really want to be able to test a photon that has cloud connectivity but perhaps a dead pin. Question: What is the most likely pin to die? Anyone at Particle know wha…

I am testing all the GPIO pins, by setting the next higher pin to an output and then reading for both HIGH and LOW on the present pin. Bit strange connecting every single GPIO pin together, but it seems to work. Even spotted the error in my logic with D7. The original code connected it to D8! [im…

So this seems fine for DAC testing. Was a bit more code than I was expecting. void myTestDAC(){ // String myDAC1Good = "Bad"; //decalred as a global variable // String myDAC2Good = "Bad"; // declared as a global variable int myDacRead1000, myDacRead2000, myDacRead3000; String myDac1Output,…

I really like the new revision share particle system for when I have a problem and need help, but this program is changing very quickly I think the only way to working with it is from a github site. Sharing a revision is probably a great way to store a working backup that people can look at. Here …

So I have PWM and AnalogRead Photon testing working on A5-A1 and A4-A0. Still makes me nervous connecting all these pins together by setting them to INPUT when not using them, but it seems to work. The basic concept here is to use PWM to turn on an LED to 3 levels, then use- AnalogRead to read the …

Photon Test Breakout Board

Hardware

rocksetta May 31, 2017, 2:25am 2

At this topic you can find the eagle schematics for the photon etc

The Photon being here

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Photon Test Breakout Board

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