# Picoware (Open-Source Custom Firmware)

**URL:** <https://forum.clockworkpi.com/t/picoware-open-source-custom-firmware/18536>\
**Category:** PicoCalc\
**Tags:** opensource, firmware\
**Created:** [July 11, 2025, 11:06am UTC](https://forum.clockworkpi.com/t/picoware-open-source-custom-firmware/18536 "2025-07-11T11:06:49Z")\
**Posts on this page:** 1\
**Showing post:** 240

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**Author:** ![jblanked](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/jblanked/32/17438_2.png) [@jblanked](https://forum.clockworkpi.com/u/jblanked)\
**Post date:** [September 18, 2025, 4:04pm UTC](https://forum.clockworkpi.com/t/picoware-open-source-custom-firmware/18536/240 "2025-09-18T16:04:11Z")

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Here’s a quick tutorial on writing/reading from/to the SD Card in Picoware:

I have a cold so please mind my voice 😅

[![](https://img.youtube.com/vi/0_i__R5oX24/maxresdefault.jpg "Creating Custom PicoCalc Apps: Read and Write to SD Card with Ease") ](https://www.youtube.com/watch?v=0_i__R5oX24)

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