Ghost LettersI spent the last 4 days figuring out how to run a small epaper display with the Raspberry Pico 2 W. And after 3 days of complete failure, today it all came together. That felt so satisfying. 
Henning Groß
StylusI have pico-mac playing the system beep on an i2s dac (though when @adafruit @ladyada made a build locally, it didn't work for her, hmmmm, I'll get that sorted tomorrow)
in the process, I discovered an interesting problem that might be randomly corrputing a certain 740 bytes of RAM when pico-mac or umac is configured for a non-power-of-two memory size! https://github.com/evansm7/umac/issues/15
the fix seems to be another rom patch:
/* Fix up the sound buffer as used by BootBeep */
ROM_WR32(0x292, RAM_SIZE - 768);
and is also included in https://github.com/evansm7/umac/pull/14
you also avoid the problem if you configure pico-mac for 256kB, 512kB, 1024kB, etc.
Club de TéléMatique 
We are trying to upgrade a #RP2 #firmware in order to allow boot from USB. In theory it is possible, but HOW ? all doc on internet refers to rpi-eeprom which does not exist on RP2 or rpi-config which does not have the boot option on the 2
Similar problem with a RP4 which refuses to upgrade.
Any help appreciated !
Soon your RP2350 will be able to do graphics & text mode in Arduino using a new library I've been working on for @adafruit -- I've created a wrapper around the DVHSTX library by @mike that enables the 16-bit and 8-bit graphics modes as well as the 91x30 cell, 7-color text mode.
This library is a lot more full featured than what I would have been able to achieve on my own, so big thanks to Mike for open sourcing it! (and lucky serendipity that a post about it came by my feed on Mastodon at just the right moment)
Source code is currently living at https://github.com/jepler/Adafruit_dvhstx/ and is "MIT licensed" the same as the underlying DVHSTX library. It also requires a pending change in the Adafruit_GFX library.
@adafruit New flavor of fruit jam just dropped. Now, time to make sure CircuitPython works great on it.
Context: https://www.adafruit.com/product/6200
#circuitPython#electronics #raspberryPi #rp2350 #rp2
BfDI@ulrichkelber : "Weil die Digitalisierung verschleppt wird, kommen uns irgendwann die Partner aus der Gesellschaft abhanden, weil die einfach nur noch wollen, dass Prozesse endlich fertig werden. Gut werden die Dinge dadurch nicht."
@ulrichkelber : "Datenminimierung heißt nicht Datensparsamkeit!"
Brandon 👏👏 Brandoff 👏👏Anyone here use the #Retroid Pocket 2+?
I'm trying to find a good CRT shader for #RetroArch to preserve transparency effects (like the waterfalls in Sonic 2) and dithering. The problem is, a lot of shaders that are lightweight enough (easymode, lottes-fast, etc.) don't seem to do the trick, the ones that work well (sonkun, royale) are too heavy for the hardware, and some that might be solid contenders are made for 1080p+ resolutions and create giant, goofy scanlines at 480p.
The #handhelds are so easy with the lcd-v2-color shaders, but finding a good CRT shader for home console #emulation has been tough with this device.
#RP2+ #RetroidPocket2+ #RetroidPocket2Plus #RetroidPocket
I'm trying to find a good CRT shader for #RetroArch to preserve transparency effects (like the waterfalls in Sonic 2) and dithering. The problem is, a lot of shaders that are lightweight enough (easymode, lottes-fast, etc.) don't seem to do the trick, the ones that work well (sonkun, royale) are too heavy for the hardware, and some that might be solid contenders are made for 1080p+ resolutions and create giant, goofy scanlines at 480p.
The #handhelds are so easy with the lcd-v2-color shaders, but finding a good CRT shader for home console #emulation has been tough with this device.
#RP2+ #RetroidPocket2+ #RetroidPocket2Plus #RetroidPocket
CK's Technology News#RP2, privacy-focused, open-source, free #US #Crypto tax #calculator
You need minimum 20 PhDs to get trough the readme, also first time ever that I saw a readme putting the license in the middle of the text.
GitHub - eprbell/rp2: Privacy-focused, free, open-source cryptocurrency US tax calculator, up to date for 2021: it handles multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot relationships, and account balances. It supports FIFO and LIFO and it generates output in form 8949 format. It has a programmable plugin architecture.
Privacy-focused, free, open-source cryptocurrency US tax calculator, up to date for 2021: it handles multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot rela...