Franz Pucher / ESP32

Hardwarenahe Programmierung

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ESP32 mbed Application Board

Table of Contents

  1. mbed Application Board
  2. Feature list
  3. 1. 128x32 LCD

mbed Application Board

Application board for ESP32 Node32s

As described in Notes the application board has been designed to enable the maximum number of potential experiments and projects, with the minimum footprint.

/media/uploads/fpucher/app_board_front_small_map1.png

Although that there are 2x20 way headers for the mbed for jumper wiring pins off-board, it's a fairly well encapsulated platform.

With the addOn board the ESP32 board NodeMCU32s can be used.

/media/uploads/fpucher/nodemcu-esp32s_-custom-.png

Feature list

  1. 128x32 Graphics LCD
  2. 5 way joystick
  3. 2 x Potentiometers
  4. 3.5mm Audio jack (Analog Out)
  5. Speaker, PWM connected
  6. 3 Axis +/1 1.5g Accelerometer
  7. 3.5mm Audio jack (Analog In)
  8. 2 x Servo motor headers
  9. RGB LED, PWM connected
  10. USB-mini-B Connector
  11. Temperature sensor
  12. Socket for for Xbee (Zigbee) or RN-XV (Wifi)
  13. RJ45 Ethernet Connector
  14. USB-A Connector
  15. 1.3mm DC Jack input

1. 128x32 LCD

An Arduino ESP32 example program to print text to the LCD

mbedEsp32S_LCD_SPI_HelloWorld.ino

#include <U8g2lib.h>
U8G2_ST7565_NHD_C12832_F_4W_HW_SPI u8g2(U8G2_R2, 5, 14, 13); // rotation = 180° = U8G2_R2 // VSPImosi(GPIO23), VSPIclk(GPIO18)

char buff[20];

void setup(void) {
  u8g2.begin();
}

void loop(void) {
  sprintf(buff, "Hello World");
  u8g2.setFont(u8g2_font_ncenB08_tr);
  u8g2.drawStr(0,30,buff);
  u8g2.sendBuffer();
}
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