GroundStudio Carbon D4

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Description

Features ESP32 based Pico D4 SiP with 2.4GHz Wifi, V4.2 Bluetooth, 8MB external SPI PSRAM, 520kB internal SRAM, 448kB ROM, 14 GPIO, 8 ADC and 6 touch sensitive pins, I²C 3V3 adapter, RGB smart LED, 1 cell LiPo/LiIon battery charger with optional battery connector and CH340C for USB comunication.

Contents

• /Documentation -- Pinout.
• /Hardware -- Schematics, layout.

Versions

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• [REV0.0.2]
  • added testpoint for GPIO0
  • R16 and R17 connected in series
  • interchanged GPIO2 and GPIO12 functions because GPIO12 cannot be pulled high while in flash mode
  • added 100nF in parallel with R13 for better battery voltage level reading
  • adjusted the pin labels for better visibility

License

This is released under the Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license. You are welcome to use this for commercial purposes.

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Certifications:

Open Source Hardware Association