#garfield Logs

Apr 11 2023

12:50 PM aandrew: hm I keep popping these TPA3110D2 amplifier boards. self protecting, speaker-protecting my ass
01:02 PM aandrew: nowhere near max voltage, but I suspect that I might be overdriving the input or perhaps there's HF components in the input that is killing it
03:00 PM polprog: https://twitter.com/polprogpl/status/1645844077689094176
03:01 PM polprog: pi pico 16ch analyzer
03:01 PM polprog: someone made a fimrware and sigrok fork for this
03:01 PM polprog: cheap 16 channels with reasonable speed
03:02 PM polprog: https://github.com/pico-coder/sigrok-pico
03:02 PM polprog: if i can get pulseview to build, i will run a few PCBs of this deadbug
03:07 PM polprog: i got the buck converter working on the triple power supply card
03:07 PM polprog: I sent it to someone as PCB exchange but they assembled it and it blew up
03:07 PM polprog: i found out why it blows up
03:08 PM polprog: but it has more issues so im redesigning it again
03:08 PM polprog: https://cdn.discordapp.com/attachments/823222897496817714/1095124076068077578/image.png
03:08 PM polprog: i need +8, -8 and -24 for the microwave modules
03:09 PM polprog: it https://cdn.discordapp.com/attachments/823223032822104094/1094748555786342473/image.png
03:09 PM polprog: also made a card cage openscad model
03:43 PM aandrew: that github repo readme doesn't give any info about the LA
03:55 PM polprog: yeah it looks pretty haphazardly made
03:55 PM polprog: https://github.com/pico-coder/sigrok-pico/blob/main/AnalyzerDetails.md
03:56 PM polprog: it can apparently do 120Msps
06:06 PM rue_shop5: cool
07:23 PM aandrew: that's pretty zippy
07:24 PM aandrew: the PPU on that chip seems pretty capable
07:27 PM rue_shop5: so, serial uploading is kinda working
07:31 PM aandrew: I notice you did not find polprog's comment about a beowulf cluster of 1-bit computers with a 16-bit LA funny. :-)
07:31 PM rue_shop5: :]
07:32 PM rue_shop5: I'm having a hard enough time getting 1 to work nicely!
07:35 PM rue_shop5: I'm starting to doubt if they can be done without a verify
08:12 PM aandrew: so I've got an X11 window from a WSL install on a win10 computer showing up on my osx laptop. could avoid so much shit if they just let me run stuff on my own hardware
08:27 PM rue_mohr: what OS is on what layer now?
09:00 PM aandrew: work laptop: win10. wsl (ubuntu) installed. installing vivado on ubuntu, but ssh'd into the ubuntu install so the GUI comes up on my mac
09:01 PM aandrew: polprog: wtf
09:01 PM aandrew: "7 bits makes an easy wire encoding that avoids ASCII characters that can be messed up by serial drivers (see SerialProtocol.md)"
09:02 PM aandrew: they're avoiding 8 bits because they're concerned about wonky serial drivers?
09:12 PM aandrew: hahaha
09:12 PM aandrew: https://www.reddit.com/r/embedded/comments/12iv6pr/cat_friendly_soldering_bench/
10:06 PM rue_mohr: "douglas lighting"
10:06 PM rue_mohr: has 0 employees...
10:07 PM Tom_L: but do they have a cat?
10:07 PM rue_mohr: hmmm