For a project with a simple PIC18 processor I'm trying to use the COG-LCD Display NHD-C12832A1Z-FSW-FBW-3V3. I've connected the display and the capacitors as mentioned in the datasheet and used the example code for this specific LCD from the Newhaven homepage. According to the datasheet, I can use every capacitor type as long as I'm still in the range. But it doesn't work (the LCD doesn't react to the init code) and I can't figure out why. I also tried sending the same commands via SPI, but nothing.
In another topic I've read something about the voltage booster circuit not being properly activated. I measured V_out and it's only at 2.9 V. Voltage V0,...,V4 are also to small, I measured only a few mV. I know this is to low for the LCD to work.
This raises my question: How do I know I activated the voltage booster circuit correctly?
Or: How do I know that the voltage booster circuit is working properly besides measuring the voltage?
Does the voltage booster circuit work as long as my capacitors and the connections are correct or does it depend on the initializion code I'm sending to the driver/ the LCD?
Please sign in to leave a comment.