This CPU board is for use with ESP-PROG.

Since the writing circuit of ESP-PROG is used, it is a simple circuit.

The power supply circuit and reset circuit were implemented.

I2C level shifter (to 5V) can also be installed.

*CPU: ESP32-WROOM-32E or ESP32-WROVER-E

*JTAG and Serial Connectors for ESP-PROG.(6P/10P)

*I2C level shifter can use Shifter-IC or FET(2N7000)

See also the new version below.

https://www.pcbway.com/project/shareproject/ESP32_CPU_board_for_ESP_PROG__Ver2_0.html

 C1-C3: 22uF/10V

 C4-C6: 0.1uF/50V

 D1: LED(3mm Red)

 D2: LED(3mm Green)

 D3: 11EQS03L

 J1:   Jack-DC

 J2,J3,J6,J18: JST_XH_B2B-XH-A

 J4: IDC-Header_2x05

 J5: IDC-Header_2x03

 J7,J8,J10,J11:JST_XH_B6B-XH-A

 J9,J12-J17,J19-J23: JST_XH_B4B-XH-A

 R1,R2: 1K

 R3: 10K

 SW1 SW_Push

 U1: ADP3338AKCZ-3.3

 U2: ESP32-WROOOM-32E / ESP32-WROVER-E

*** Note.

C1-C3: THT SMD(2012) can be mount

When using I2C HUB, jumper J9 to J12.

*** Select the level shifter from the following ***

*Level Shifter(Akiduki Densi Co. Japan)

 U3: AE-PCA9306

*2N7000 Level Shifter

 Q1,Q2: 2N7000

 R4-R7: 10K

*PCA9517A

 U3: use SOP8->DIP adapter board. 0.1uF*2 VCC1->GND VCC2->GND

JP1-Short, JP2-Open(Cut)