This is a serial bridge for programming custom ESP32 boards, with auto-reset feature, so you shouldn't have to manually push buttons to enter boot mode. The board can also power simple ESP32 boards and has some standard circuit protections.
Features:
- USB-C Connector
- ESD, overcurrent and reverse current protection
- CP2104 enabled USB-to-UART Bridge
- 3.3V ~ 600mA regulator
- Auto-reset circuit
- Boot and Reset buttons.
| Parts | Value | Package | Qty |
|---|---|---|---|
| C1, C2, C5 | 10uF | 0603-CAP | 3 |
| C3 | 1uF | 0603-CAP | 1 |
| C4 | 10uF | C0805 | 1 |
| C6 | 1uF | C0805 | 1 |
| D1, D2, D3 | BAT60A | SOD-323 | 3 |
| F1 | 1.5A PTC FUSE | PTC1206 | 1 |
| J2 | USB-C-4105_REVA | GCT_USB4105_REVA | 1 |
| PWR | RED LED | 0805_LED | 1 |
| Q1 | UMH3N | SOT65P230X110-6N | 1 |
| R3, R4, R10 | 5.1k | R0805 | 3 |
| R5, R8, R9 | 10k | R0805 | 3 |
| R6 | 4.7k | R0805 | 1 |
| R7 | 100k | R0805 | 1 |
| RX | YELLOW LED | 0805_LED | 1 |
| S1, S2 | KMR621NG SWITCH | KMR621NG_LFS | 2 |
| TX | ORANGE LED | 0805_LED | 1 |
| U1 | CP2104-F03-GM | QFN50P400X400X80-25N | 1 |
| U2 | USBLC6-2SC6 | SOT95P280X145-6N | 1 |
| U3 | AP2112M-3.3TRG1 | AP2112M-3.3TRG1_DIO | 1 |
| X1 | BM07B-SRSS-TBB | BM07B-SRSS-TB | 1 |
- 4x M2 3mmx3mm threaded inserts
- 4x M2 5mm Hex Socket Cap Screw (or similar)
- 8x M2 3mmx3mm threaded inserts
- 8x M2 5mm Hex Socket Cap Screw (or similar)