NEW Audio Developing Board (ADB) consists of Espressif's up-to-date chip ESP32-PICO-D4, 2-ch high resolution audio DAC TI PCM5102A, and Lipo charger and USB serial interface (CP2102).
I was totally impressed by Espressif's latest chip ESP32-PICO-D4, "All-in-one WiFi/Bluetooth chip except for antenna". I've already experienced on making several ESP32 related developing board and I just want to try making my board with this new chip.
YES, ESP32-PICO-D4 on-board
Tiny 64x32 pixels SSD1306 OLED display is connected to ESP32 through I2C.
High resolution Audio 2ch-DAC TI PCM5102A on-board.
Lipo charger circuit with Enable/Disable (USB bus power) jumper.
Programmable by latest Espressif's esp-idf (Arduino IDE support have some function limit.)
Very thin (3mm, excluding Audio jack and jumper) and light-weight implementation.
Note for this item This item is a developing board for early adaptor and experimenter. Firmware can be re-programmed by esp-idf and initial firmware is Bluetooth speaker mode (device name "hogehoge_mont"). As is in the picture above, this board can work as web radio as same as my previous item (ESP32-ADB) but it requires programming process. If larger OLED display is prefered, please consider ESP32-ADB. May be not suitable for "my first ESP32 board".
Most up-to-date code is available at n24Bass's GitHub account. For its operation, station switch must be swapped from GPIO_NUM_16 to GPIO_NUM_0 for web radio operation. Descriptions of switch are in "controls.c" in the source code. Please "find and replace" from GPIO_NUM_16 to GPIO_NUM_0. please use it for testing..
The movie below is made by the prototype with thin-wire jumpers. The production version is modified without these jumpers.
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From childhood, I've loved making electrical things by soldering for some amateur radio related thing.
After graduated certain university and taking Ph. D, I did have a GaAs MMIC design working for 60 GHz system
but it's a bit long time ago.
I always love making something and would like to share my joy. Please enjoy my store!