ESP32 DevKit V1 Extension board

[powerbroker]

Extension of ESP32 DevKit V1:

• External 12V power source
• MC34063-based +5V and -4.2V regulator(both ~300mA max)
• Place for LD1117-3.3, if necessary(DevKit V1 one used by default)
• I2C connector at 3.3V
• I2C EEPROM 24LCXX
• 1 x 2x4 decoder/demultiplexer generating CS0..CS3 for SPI devices
• 1 x 3.3V SPI connector with CS1..CS3
• 1 x 3.3V SPI LCD connector with CS0 and background LED power
• UART2 connector at TTL(5V) levels
• 2x 7A SPDT relay(12V coil)
• 2x 20A 30V N-MOS with 12V BJT gate driver
• 2x ADC OP-AMP input buffer
• 2x DAC OP-AMP output buffer

IMG_20240524_001127.jpg (137.31 KiB) Viewed 6649 times

IMG_20240524_001223.jpg (148.78 KiB) Viewed 6649 times

[liaifat85]

Hi, How can we access all the GPIO pins of the ESP32 when using this board?

[powerbroker]

Hi, How can we access all the GPIO pins of the ESP32 when using this board?

by extracting Devkit V1 out of it

allmost each GPIO pin of Devkit V1 has assigned function on the board, except SENS_VP/SENS_VN(which are not wired) and GPIO1/GPIO3, which are Rx0/Tx0 of Devkit V1 on-board USB com port.