TM1638 LED&KEY

// TM1638 LED&KEY on Arduino Uno: wiring and a free simulation at https://www.tinkered.ai/components/tm1638-led-key
// TM1638 LED&KEY on an Arduino Uno: STB D4, CLK D6, DIO D7
// Shows a counter; each button lights the LED above it.
#include <TM1638plus.h>

const uint8_t STB = 4;
const uint8_t CLK = 6;
const uint8_t DIO = 7;
TM1638plus tm(STB, CLK, DIO, false); // false: no extra delay needed at 16 MHz

void setup() {
  Serial.begin(115200);
  tm.displayBegin();
  tm.brightness(2); // 0 to 7
  tm.displayText("HELLO");
  delay(1000);
}

void loop() {
  static unsigned long counter = 0;
  static uint8_t lastButtons = 0;
  uint8_t buttons = tm.readButtons(); // bit 0 = S1 ... bit 7 = S8
  for (uint8_t i = 0; i < 8; i++) tm.setLED(i, (buttons >> i) & 1);
  if (buttons != lastButtons) {
    Serial.print(F("Buttons: 0b"));
    Serial.println(buttons, BIN);
    lastButtons = buttons;
  }
  tm.displayIntNum(counter / 10, false, TMAlignTextRight);
  counter++;
  delay(100);
}

// TM1638 LED&KEY on ESP32 DevKit V1: wiring and a free simulation at https://www.tinkered.ai/components/tm1638-led-key
// TM1638 LED&KEY on an ESP32 DevKit V1 through a BSS138 level shifter: STB GPIO25, CLK GPIO26, DIO GPIO27
// Shows a counter; each button lights the LED above it.
#include <TM1638plus.h>

const uint8_t STB = 25;
const uint8_t CLK = 26;
const uint8_t DIO = 27;
TM1638plus tm(STB, CLK, DIO, true); // true: slows the bit timing for a fast MCU

void setup() {
  Serial.begin(115200);
  tm.displayBegin();
  tm.brightness(2);
  tm.displayText("HELLO");
  delay(1000);
}

void loop() {
  static unsigned long counter = 0;
  static uint8_t lastButtons = 0;
  uint8_t buttons = tm.readButtons();
  for (uint8_t i = 0; i < 8; i++) tm.setLED(i, (buttons >> i) & 1);
  if (buttons != lastButtons) {
    Serial.printf("Buttons: 0x%02X\n", buttons);
    lastButtons = buttons;
  }
  tm.displayIntNum(counter / 10, false, TMAlignTextRight);
  counter++;
  delay(100);
}

// TM1638 LED&KEY on Raspberry Pi Pico: wiring and a free simulation at https://www.tinkered.ai/components/tm1638-led-key
// TM1638 LED&KEY on a Raspberry Pi Pico (arduino-pico) through a BSS138 level shifter: STB GP2, CLK GP3, DIO GP4
// Shows a counter; each button lights the LED above it.
#include <TM1638plus.h>

const uint8_t STB = 2;
const uint8_t CLK = 3;
const uint8_t DIO = 4;
TM1638plus tm(STB, CLK, DIO, true); // true: slows the bit timing for a fast MCU

void setup() {
  Serial.begin(115200);
  tm.displayBegin();
  tm.brightness(2);
  tm.displayText("HELLO");
  delay(1000);
}

void loop() {
  static unsigned long counter = 0;
  static uint8_t lastButtons = 0;
  uint8_t buttons = tm.readButtons();
  for (uint8_t i = 0; i < 8; i++) tm.setLED(i, (buttons >> i) & 1);
  if (buttons != lastButtons) {
    Serial.print("Buttons: 0b");
    Serial.println(buttons, BIN);
    lastButtons = buttons;
  }
  tm.displayIntNum(counter / 10, false, TMAlignTextRight);
  counter++;
  delay(100);
}