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Features

Pando is Open Hardware, licensed under the CERN-OHL-S v2.

  • MCU: STM32G0B1KBT6. This is a newer MCU that offers benefits over an older, more commonly used MCU such as the STM32F072CBT6:
    • 64 MHz ARM Cortex-M0+ core, up from 48 MHz
    • 144 KB SRAM, up from 16 KB (~9x)
    • Consolidated single-supply core (VDD) with a modern power layout, reducing decoupling capacitors from 6 to 1
    • Streamlined LQFP-32 package instead of LQFP-48, keeping the same 7x7 mm body with a larger 0.875 mm pin pitch for easier soldering
    • Active ST support, keeping the design future-proof
  • IO expander: PCA9555, communicating with the MCU over I²C
  • Split communication: USB-C with ESD protection on all ports
  • Switches: Hotswap sockets
  • Assembly: Single-sided SMD components for hotplate soldering

The project uses Ergogen for layout generation and KiCad for schematic/PCB design.

Layout Template

Print out this 1:1 letter-size template and test the layout.