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ESP8266 Mini Project: Binary Counter

In this post, another mini GPIO project will be presented by using only LEDs. I'll make LEDs count in binary format up to 64 using 6 of them.
Main code will be put inside an infinite loop so that chip always goes on counting.

Figure: Rightmost LED represents Least Significant Bit (LSB) whereas Leftmost LED represents Most Significant Bit (MSB) as depicted in the figure



Setting Up Circuitry
  • GPIO 16, GPIO 5, GPIO 4, GPIO 0, GPIO 2, GPIO 14 pins will be configured as Output pins being pin_D0, pin_D1, pin_D2, pin_D3, pin_D4, pin_D5 respectively.

CODE

Coding will be too easy for this project but only tricky part would be the function that gets a decimal number and converts that number into binary format.



def DisplayBinary(decimalNumber):
    # format given decimal...convert to binary..Total number of bits is 6...zero padding....
    binaryString = '{0:06b}'.format(decimalNumber)
    pin_D0.value(int(binaryString[5]))
    pin_D1.value(int(binaryString[4]))
    pin_D2.value(int(binaryString[3]))
    pin_D3.value(int(binaryString[2]))
    pin_D4.value(int(binaryString[1]))
    pin_D5.value(int(binaryString[0]))




Summary
Another GPIO project using LEDs as output GPIO is presented in this post.
Have fun!


Test Environment

 Chip Used: ESP8266 NodeMCU (Flash Size 4 MB)
Firmware Used: esp8266-20171101-v1.9.3.bin
Circuit Components: 1K Resistors, LEDs, Jumper Wires



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