Espruino pico sbc stm32 arm cortex m4 usb javascript on board fet espruino espruino pico pinned the espruino pico is a revolutionary tiny single board computer that features javascript and a usb connection allowing the control of electronics quickly and easily the pico has an stm32 arm cortex m4 microcontroller pre programmed with the espruino ide so it easy to get up and running the on board usb type a connector makes integration easy and an on board voltage regulator will accept input vo