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)