Here is the new revision of my ESP32 development board. A few issues were fixed and the price is now a lot lower. Still made in and ships from the USA. Other than the ESP32 module it has an Si Labs CP2104 USB to Serial converter, A 3.3V LDO, Reset and Flash Switches and two RGB LEDs.
There are two tri-color LEDs on the board. The one the left has the red and green LEDs hooked up to the CP2104 to signal transmit and receive activity outputs. The blue LED is connected to a GPIO pin. The right hand RGB LED is connected to three IO pins on the ESP32S module.
The board supports auto-download from the Arduino environment and will automatically be set in download mode by the downloader. Once the download is complete the board will be reset, just like a normal Arduino board.
All the required capacitors and pull-up resistors are fitted on the board. The board can be powered from an external power supply of up to 12V or the USB connector or both.
Unlike most other boards this one fits on a breadboard and has one row of pins accessible on each side of the board. Most of the pins of the ESP32 module are available on the external pins.
The module can be programmed directly from the Arduino environment without pushing any buttons. The upload speed is 921600 bps.
The first board had a weak mechanical connection to the micro-USB connector and this has been fixed.
The schematic is available under the 'Datasheet' button to the right.
Mike | March 12, 2017
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