ESP32 Arduino means Arduino IDE configured to use ESP32 like Arduino, the guide which we already have. TM1637 Seven Segment LED Display is Popular Thing in Arduino Prototyping World. Here is Some Words About Using TM1637 With ESP32 Arduino. Apart from IoT developments, it is important to port all the popular modules, kits to ESP32.
TM1637 is a driver IC which has pathetic documentation. It is not easy to write libaray to support dot (.) and colon (:). Using 7 segment display with TM1637 reduce the burden on the host controller because all of the multiplexing is handled on the interface chip. However, TM1637 seven segment LED display will suck huge battery. So actually it is unsuitable when battery needs to be saved.
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There is few existing efforts to develop ESP32 specific libraries for Arduino, like :
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https://github.com/petrows/esp-32-tm1637 |
However, we tested the popular libaray for TM1637 :
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https://github.com/bremme/arduino-tm1637 |
Using the pin 22 and pin 23 of ESP32, it gave this result of example :
I have not changed the example sketch much :
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#include "SevenSegmentTM1637.h" /* initialize global TM1637 Display object * The constructor takes two arguments, the number of the clock pin and the digital output pin: * SevenSegmentTM1637(byte pinCLK, byte pinDIO); */ const byte PIN_CLK = 22; // define CLK pin (any digital pin) const byte PIN_DIO = 23; // define DIO pin (any digital pin) SevenSegmentTM1637 display(PIN_CLK, PIN_DIO); // run setup code void setup() { Serial.begin(9600); // initializes the Serial connection @ 9600 baud display.begin(); // initializes the display display.setBacklight(100); // set the brightness to 100 % display.print("INIT"); // display INIT on the display delay(1000); // wait 1000 ms }; // run loop (forever) void loop() { display.print("LOOP"); // display LOOP on the display delay(1000); // wait 1000 ms display.print("COUNTING SOME DIGITS");// print COUNTING SOME DIGITS display.clear(); // clear the display for (uint8_t i=0; i < 100; i++) { // loop from 0 to 100 display.print(i); // display loop counter delay(100); // wait 100 ms }; display.clear(); // clear the display display.print("SUCC"); // print SUCC for success display.blink(); // blink SUCC delay(1000); // wait 1000 ms }; |
There is definite need to thoroughly examine this library for minus (-) dot (.) and colon (:) support for ESP32. On initial run, it apears to me as working as intended.
About Abhishek Ghosh
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