I am working on a constant current load and I want to add a 2x16 led backlight display .. With the display I want to be able to see the voltage,current,and the total watts being generated .. I have never dealt with being a display like to known where to begin ?? I have read a couple display voltage and current articles but I need the watts too so I don't overload the heatsink with too much heat..


Thanks
Jay Sr

 

I assume you mean a 2-line x 16-character LCD display.
This is a very practical project.
You will need a microcontroller to output to the display.

 

My choice was to just drop some of these into the project.

Personally, I'd use more then 2 lines to display 3 variables. But yeah, most any micro, some current shunts (like the EBay model has), perhaps a high side current shunt IC, and a voltage reference.

I'd put some buttons inside the case so you can do an electronic calibration, which assumes the micro has some EEPROM too. Most do.