Wire Diagram 4 Pin Lcd. And finally connect the 33v of arduino to the a of lcd which is the anode of. In 8 bit mode all the data linesdb0 db7 of lcd are utilizedin 4 bit mode only four data pins of lcd are utilized db7.
Pin15 ve pin of the led. Db7 is pin 14 on the lcd and it connects with an orange wire to arduino 12. This returns the duration length of the pulse in microseconds.
This pin is connected to 5v.
The real significance advantages of this i2c serial lcd module will simplify the circuit connection save. When making a large xlr4 to trs adapter yes you connect pins 2 4 to the ground sleeve. Wiring a rocker switch depends on the type you plan on using so your wiring will depend on the amount of pins your rocker switch has. The mistake i made initially here was to wire up the lower nibble db0 to db3 instead of the high nibble db4 to db7.