EEVblog Electronics Community Forum
Electronics => Beginners => Topic started by: Phaedo on February 16, 2023, 06:18:13 pm
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Hello ,
I did a bit of searching on the threads pertaining to HT1621, but most are reverse engineering existing LCDs without showing the schematics.So I could not get an idea of how the LCD is connected to the HT1621.
I am trying to get HT1621 to work with a 3.5 digit glass LCD. I am basically using an arduino code from here :
https://www.14core.com/wiring-the-6-digit-7-segment-2-4-inch-ht1621-lcd-display-module-on-microcontroller (https://www.14core.com/wiring-the-6-digit-7-segment-2-4-inch-ht1621-lcd-display-module-on-microcontroller)
I am not too sure about what are the settings for my LCD.
a) Selection of 1/2 or 1/3 bias.
b) Selection of 1/2 or 1/3 or 1/4 duty LCD.
If anyone can give me a bit of guidance or point to some links , would be awesome !!
I have attached a schematic of what I have breadboarded FYI.
Cheers and TIA
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Solved. Bad connection on breadboard. :palm: