What is it?
D-duino-32 dual is an ESP32 Development Board with two 1.3 OLED screens. This board has ESP32 Wrover(8MB PSRAM) inside.It is suitable for audio application. Also two screens can show more information.
Why did you make it?
ESP32 is a powerful WiFi+ BLE MCU and support many language like C,Arduino,MicroPython... ESP32 will be more popular in future. I want to make a special development board for ESP32 beginners. I will open source schematic just like before.
What makes it special?
- ESP32-Wrover-B Inside(8MB PSRAM)
- CP2102 UART Interface
- Program auto uploading function
- The VIN pin accepts 2.25V~16V.
- Button EN (RESET)
- Button FLash(GPIO0)
- Button 32 (GPIO32)
- 1.3OLED DISPLAY 1(0x3d)
- 1.3OLED DISPLAY 2(0x3c)
- 1A Charging
- WS2812B RGB LED(GPIO5)
- Navigation Switch(GPIO27 GPIO19 GPIO18)
- IIC(SDA-GPIO21 SCL-GPIO22)
SD card pin map
- GPIO12--DAT2
- GPIO13--DAT3
- GPIO15--CMD
- GPIO14--CLK
- GPIO2--DAT0
- GPIO4--DAT1
- GPIO23--card
Library
https://github.com/ThingPulse/esp8266-oled-ssd1306
https://github.com/adafruit/Adafruit_NeoPixel
SD card user can view packet monitor as reference
https://github.com/spacehuhn/PacketMonitor32
Demo code and Schematic
https://github.com/lspoplove/D-duino-project/tree/master/D-duino-32dual