# Custom PicoCalc BIOS/keyboard firmware

**URL:** <https://forum.clockworkpi.com/t/custom-picocalc-bios-keyboard-firmware/17292>\
**Category:** PicoCalc\
**Tags:** hardware, keyboard, firmware\
**Created:** [May 5, 2025, 8:20pm UTC](https://forum.clockworkpi.com/t/custom-picocalc-bios-keyboard-firmware/17292 "2025-05-05T20:20:32Z")\
**Posts on this page:** 1\
**Showing post:** 58

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**Author:** ![BrianO](https://avatars.discourse-cdn.com/v4/letter/b/f04885/32.png) [@BrianO](https://forum.clockworkpi.com/u/BrianO)\
**Post date:** [January 15, 2026, 12:53pm UTC](https://forum.clockworkpi.com/t/custom-picocalc-bios-keyboard-firmware/17292/58 "2026-01-15T12:53:42Z")

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Hi Jack

I don’t think it has anything to do with the Pico firmware. The same problem happened when I was testing the PicoCalc eBook Reader firmware which is very small.

> [@PicoCalc eBook Reader](https://forum.clockworkpi.com/t/picocalc-ebook-reader/20111):
>
> Hello everyone, I’m excited to announce the PicoCalc eBook Reader, a multi-component project that I’ve built for the PicoCalc. You can find the full project, including all files and documentation, on GitHub: - [https://github.com/A-I-nstein/PicoCalc-eBook-Reader](https://github.com/A-I-nstein/PicoCalc-eBook-Reader) This project is designed to convert EPUB files into a custom .book format and allow them to be read on the PicoCalc. It is built upon [BlairLeduc/picocalc-text-starter](https://github.com/BlairLeduc/picocalc-text-starter/tree/main), which provides the base hardware driver support—a big thank you to @…

I loaded PicoMite for Pico 2 this morning and I have the exact same symptoms. - First boot after inserting batteries the header message is typed very slowly. Power off/on and the Power LED turns off then immediately off.

The version of webmite/picomite I am using is 6.01.00 RC27e downloaded from this post.

> [@PicoCalc 6.01.00 RC23 Available for Download](https://forum.clockworkpi.com/t/picocalc-6-01-00-rc23-available-for-download/20683/25):
>
> Please download [picocalc\_v6.01.00\_rc27e.zip](http://raspi1.mypi.co/download/picocalc_v6.01.00_rc27e.zip) GPS.c was uploaded three hours ago, I did run your program and the result looks different now. Please note that I did a rebuild with the new GPS.c and I did not change the revision code.

I also this morning I loaded PicoWare v1.6.0 MicroPython version for Pico2W. First boot after remove/replace batteries is the PicoWare animation graphic displayed normally, and I could run pico ware apps no problem. (It did take longer to startup however then I normally see) Power off/on..Green led lit and went out…same symptoms.

I know the batteries are good since I just topped up the power a day or so ago.

Let me know if there is anything else you want me to try before I go back to 1.4……Brian

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