STeMCell
Bonsai-C
STeMCell | Bonsai-C | |
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13 | 8 | |
113 | 68 | |
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0.0 | 2.8 | |
over 1 year ago | 10 months ago | |
HTML | ||
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
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STeMCell
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Ordered an assembled STeMCell, but can't put it into uf2 bootloader mode. Am I missing something?
I ordered a pre-assembled STeMCell MCU. The dfu bootloader works, and I was able to flash the uf2 bootloader onto there, but i'm not sure how to put it into uf2 bootloader mode. When I power the MCU on while holding the BOOT0 button down, it goes back into dfu mode. Am I missing something?
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My rapidly accelerating pursuit of ergo
in the meantime, we've been using stemcell controllers which don't have the same issue
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Why the strange keyboards?
And I do agree that ESD issues are often overblown, but since I gotten my hand on some STMCELL back when pro micros were hard to get , I had to think hard about esd protection as "This design does not have any fuse, esd protection or reverse voltage protection." https://github.com/megamind4089/STeMCell
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I feel like I could overload these even moreā¦
stemcell, but you need to build it yourself.
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Pro Micro Crashing Oled ?
Your promicro is not enough program memory(32kb) to use some animations, let's use another controller which have more program memory like stemcellhttps://github.com/megamind4089/STeMCell
- List of keyboards by controller / not using pro micro
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AMTEGA32u4 on keyboard
The blackpill is not, but the bonsai c4 is, alongside the stemcell, if you're JLCPCB-wise
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Creating a custom 36 key split gergoplex / ferris sweep style board?
There are a few controllers that have the additional holes (puchi-c, goldfish, comet etc) not just the elite-c. StemCell is probably one of the more open ones and you can get them assembled at jlc I believe? https://github.com/megamind4089/STeMCell
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Is AVR not enough for QMK nowadays? I'm struggling with firmware and EEPROM size and can't enable all the features I want.
STeMCell
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JLCPCB manufactured STeMCell v1.0.0
https://github.com/megamind4089/STeMCell/tree/main/gerbers https://github.com/megamind4089/STeMCell/tree/main/bom
Bonsai-C
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List of keyboards by controller / not using pro micro
right, but I cannot find a compatible replacement that has more memory proton-c is out of stock everywhere, Bonsai-C would have to be custom printed -- I don't see any ready source for it. The STM32F401CC blackpill is available and cheap, but not compatible with PCBs designed for the pro micro. Other compatible MCUs like the Puchi-C and Elite-C have the same memory as the pro micro.
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Want to use Bonsai C4 for Corne, few questions.
I have read the information on using a Bonsai C4 with split keyboards and think I understand it, but wanted to check with the community. Bonsai C4 Github
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[GB] Bonsai C4: a high performance drop-in replacement for ProMicro | customMK
Github link
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Interest Check for Bonsai C4, an open source ARM-based ProMicro replacement
GitHub link: https://github.com/customMK/Bonsai-C/tree/main/C4
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PCB Design Question: How do you wire a PCB that uses an integrated microcontroller board (proMicro, Elite C)?
In addition to the connections to the switch matrix, you'll obviously have connections, to the USB port (which also conveniently supplies power and ground) and you may even have some ESD protection devices. Here's a schematic for a similar controller card (but powered by an ARM chip): https://github.com/customMK/Bonsai-C
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Out with the 4 year old 40 key and in with the 44 key prototype.
Yeah, the Teensy is a great option for handwiring, or if additional pins are needed for extra features like encoders. I can't help but wonder, however, if the future belongs to ARM. QMK's own Proton C uses a big manly ARM chip with a stupid amount of flash, RAM and ridiculous clock speeds. And then there is the Bonsai C, which is an optimized version of the Proton C: https://github.com/customMK/Bonsai-C
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Introducing Bonsai C: An open source drop-in-replacement for Proton C
Absolutely! We linked to it in the main comment under this post and prominently feature it in the GitHub repo, but for your convenience, I can link it here too. Enjoy!
What are some alternatives?
qmk_firmware - Open-source keyboard firmware for Atmel AVR and Arm USB families
qmk_firmware - Open-source keyboard firmware for Atmel AVR and Arm USB families
crkbd - Crkbd Keymap by Manna Harbour (Extras). This keymap includes crkbd-specific hardware feature support. This repository provides additional content outside QMK.
qmk_firmware - Open-source keyboard firmware for Atmel AVR and Arm USB families
qmk_firmware - Open-source keyboard firmware for Atmel AVR and Arm USB families
zmk - ZMK Firmware Repository
cantor - Cantor keyboard, a 42 key diodeless split keyboard.
STM32CommandLine - STM32 shell, a CLI(command line interface) like linux shell, you can easily port into an embeded system, all you need is a serial com port : )
manna-harbour
roost - roost low profile ergonomic ortholinear hot-swappable kailh-choc keyboard
qmk_firmware - Open-source keyboard firmware for Atmel AVR and Arm USB families