The OpenBCI Cyton is noise-free and uses a PIC32MX250F128B The Raspberry Pi RP2040 https://learn.sparkfun.com/tutorials/rp2040-thing-plus-hookup-guide/hardware-overview Raspberry Pi Zero’s Product Recommended PSU current capacity Typical bare-board active current consumption Raspberry Pi 400 3.0A 800mARaspberry Pi Zero 1.2A 100mARaspberry Pi Zero W 1.2A 150mARaspberry Pi Zero 2 W 2A 350mA The Raspberry Pi 4 and 5 draw much …