esp32s2Stick is a USB device based on the esp32-s2 chip by Espressif. Thanks to the presence of an USB OTG interface, it is possible to program the chip to act as a USB peripheral (mass storage device, CDC...) and to upgrade the firmware through USB (DFU, Device Firmware Upgrade).
In addition to the basic circuit needed to run the WROVER module, esp32s2Stick offers an RGB LED and a socket for MicroSD cards.
- Blog post on my website
- Eagle files (schematic and board) are available in the "eagle" subfolder
- Some test sketches for Arduino are available in the "arduino" subfolder
- PCB can be ordered from PCBWay
- C1, C2: 100nF SMD capacitor (0805)
- C3, C4: 1uF SMD capacitor (0805)
- R1, R2, R3, R4, R5, R6: 10Kohm SMD resistor (0603)
- IC1: 1117-3.3 voltage regulator
- D1: WS2812 RGB led (5050, 4 pins)
- BOOT, EN: SMD momentary switch (5.2mm)
- U1: ESP32-S2-WROVER
- J1: USB A male SMD connector
- P1: MicroSD card socket