esp32-pcb-bitraf
ESP32 S2 Mini Development Board PCB created with KiCad 6 at Bitraf workshop, to be ordered from PCBWay.
Reference PCB for the workshop available here: https://github.com/jenschr/ESP32-workshop-files
Inspired by the official development board ESP32-S2-DevKitM-1.
Features
- Reset switch
- Boot switch for entering programming mode
- Power LED
- General purpose LED
- DotStar LED
- USB-C for power and programming
- Fits on a breadboard
Board
Schematic
Bill of materials
Also available as an interactive bom.
| Item | Qty | Reference(s) | Value | Type | Footprint | Datasheet |
|---|---|---|---|---|---|---|
| 1 | 2 | BOOT1, RESET1 | SW_Push | Switch | SW_SPST_Panasonic_EVQPL_3PL_5PL_PT_A08 | ~ |
| 2 | 4 | C1, C2, C3, C5 | 0.1uF | Capacitor | 0603_1608Metric | ~ |
| 3 | 1 | C4 | 10uF | Capacitor | 0805_2012Metric | ~ |
| 4 | 2 | D1, D2 | LED | LED | 0603_1608Metric | ~ |
| 5 | 1 | D3 | APA102-2020 | DotStar LED | APA102-2020 | https://www.led-color.com/upload/201604/APA102-2020%20SMD%20LED.pdf |
| 6 | 2 | J1, J3 | Conn_01x20_Male | Header | PinHeader_1x20_P2.54mm_Vertical | ~ |
| 7 | 1 | J2 | USB_C_Receptacle_USB2.0 | USB-C Connector | TYPE-C-31-M-12 | https://www.usb.org/sites/default/files/documents/usb_type-c.zip |
| 8 | 2 | R1, R2 | 10K | Resistor | 0603_1608Metric | ~ |
| 9 | 2 | R3, R4 | 5.1K | Resistor | 0603_1608Metric | ~ |
| 10 | 2 | R5, R6 | 33R | Resistor | 0603_1608Metric | ~ |
| 11 | 2 | R7, R8 | 1K | Resistor | 0603_1608Metric | ~ |
| 12 | 1 | U1 | ESP32-S2-M | Microcontroller | ESP32-S2-MINI-1-N4 | https://www.espressif.com/sites/default/files/documentation/esp32-s2-mini-1_esp32-s2-mini-1u_datasheet_en.pdf |
| 13 | 1 | U2 | LM1117-3.3 | Linear Regulator | SOT-223 | https://www.ti.com/lit/ds/symlink/lm1117.pdf |
Libraries
- USB TYPE-C-31-M-12 from Korean Hroparts Elec @ LCSC
- Available here: https://lcsc.com/product-detail/USB-Connectors_Korean-Hroparts-Elec-TYPE-C-31-M-12_C165948.html
- Espressif Systems ESP32-S2-MINI-1-N4
- Symbol Pin Ordering: Functional
- Footprint Units: English (mil)