spicy issueshttps://gitlab.fabcloud.org/academany/fabacademy/2020/bootcamp/spicy/-/issues2020-05-27T16:32:33Zhttps://gitlab.fabcloud.org/academany/fabacademy/2020/bootcamp/spicy/-/issues/4Using KiCad fab.lib in Board Design2020-05-27T16:32:33ZKrisjanis Rijniekskrisjanis.rijnieks@gmail.comUsing KiCad fab.lib in Board DesignOne thing that I could do this week to make it easier to collaborate on the board KiCad project is to change all components in the sch and pcb file to ones from fab.lib KiCad library. Goes well together with my efforts to fix it as such....One thing that I could do this week to make it easier to collaborate on the board KiCad project is to change all components in the sch and pcb file to ones from fab.lib KiCad library. Goes well together with my efforts to fix it as such.
Also seems like the repo could benefit from some general housekeeping.https://gitlab.fabcloud.org/academany/fabacademy/2020/bootcamp/spicy/-/issues/3FTDI soldering2020-02-01T18:39:24ZNeil GershenfeldFTDI solderingBack home, I experimented with soldering the 25 mil pitch FTDI chips:
http://academy.cba.mit.edu/classes/embedded_programming/FTDI/USB-FT230XS-UPDI.jpg
http://academy.cba.mit.edu/classes/embedded_programming/FTDI/USB-FT230XS-serial.jpg...Back home, I experimented with soldering the 25 mil pitch FTDI chips:
http://academy.cba.mit.edu/classes/embedded_programming/FTDI/USB-FT230XS-UPDI.jpg
http://academy.cba.mit.edu/classes/embedded_programming/FTDI/USB-FT230XS-serial.jpg
What worked best for me was a combination of the techniques Jani tried: tin the traces, use hot air reflow to tack the chip down, then use drag soldering to finish.
See how hard that is to reproduce in your labs.
I am also going to test a heated solder sucker.https://gitlab.fabcloud.org/academany/fabacademy/2020/bootcamp/spicy/-/issues/2SAMD11 issues2020-01-26T15:15:37ZNeil GershenfeldSAMD11 issuesAfter reviewing with Microchip, I think all of our SAMD11 issues had to do with its sensitivity to slowly-rising power. I had picked the wrong capacitor value in my final test in Kerala; I just updated that and tested it without trouble:...After reviewing with Microchip, I think all of our SAMD11 issues had to do with its sensitivity to slowly-rising power. I had picked the wrong capacitor value in my final test in Kerala; I just updated that and tested it without trouble:
http://academy.cba.mit.edu/classes/embedded_programming/D11C/hello.D11C.blink.reset.png
This has an RC filter to slow the reset turn-on, and leaves off the clock pull-up that's usually not needed. I just tested and this works for me, can people who had SAMD11 issues try reproducing it?
It's using my 10->4 pin JTAG SWD header adapter, to save space and simplify routing:
http://academy.cba.mit.edu/classes/embedded_programming/SWD/hello.SWD.10-4.pnghttps://gitlab.fabcloud.org/academany/fabacademy/2020/bootcamp/spicy/-/issues/1shall we use issues and repo for after bootcamp announcements and progress?2021-03-26T11:51:44ZHenk Buursenshall we use issues and repo for after bootcamp announcements and progress?