A Beginner's Complete Guide to Microcontroller Programming w..
summary
Walks through getting Ruby onto a microcontroller using a Raspberry Pi Pico: put the RP2P2.uf2 on the board via boot-button drag‑and‑drop, open the USB serial port and use an IRB‑like shell. Shows GPIO blink example and a thermal ADC sample reading ~893/4095 (~20°C) but warns ADC 12‑bit 0–4095 noisy; demos I2C RTC with battery and a PRK keyboard firmware that runs. Explains toolchain and limits: Raspberry Pi Pico (RP2040, 264KB RAM, 2MB flash), runtime size comparison pRuby ~10KB VM vs mruby ~1.6MB, some missing Ruby features and bugs.
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chapters (9)
- 0:00Microcontroller programming with Ruby
- 1:46Essential tools for setup
- 6:45Basic GPIO operations
- 11:51ADC and voltage measurement
- 15:47MRuby and RP2 shell features
- 23:10Serial communication protocols
- 25:21MRuby and PRK firmware
- 28:36Conclusion and PRuby future
- 29:21Ruik Kag 2024 in Okinawa
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