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Last active November 1, 2023 00:11
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USB control board
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boards.md
  • USB hub that can do power control on one port (via pico), one USB-A female port for going to the phone
  • second USB goes to pico
  • 12v in via a barrel jack which powers an LDO with ~3.8-9v 4A output
  • output adjustable via software or just a pot
  • output voltage/current measured by MCU
  • Pico attached to board
  • pico GPIO pins exposed via some header for phone UART and button control
  • Should have a jumper to adjust between 1.8/3.3v UART
  • (just 1.8/3.3v is fine and i know from experience that a single voltage divider on the TX is enough for this)
  • Spare i2c and a few extra GPIOs for future expansion
@MartijnBraam
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Blinky LED for board identification

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