I decided at the start of the new year to clean up some projects. The Primer Counter had a little quirk in the s/w I wanted to fix and in general just clean up the code. Make it neater. Over the last year or so I had added a 2 line LCD display with an RGB backlight. The LCD never had great contrast and I finally figure out that because I was powering the Nano board through the USB port, then it was regulating that 5V so that what was available to the outboard display was 4.5V. Turns out the Grove LCD likes a full 5V. Now it's very bright and clear. I also decided to replace the circuit board with a commercial one to make things even neater.
Below are the pictures of the old board and the new one. I did elect to put the resistors for the LEDs onboard and instead of using USB power wart, I got a full 5V power supply feeding directly into the board.
MBTV
Forum Index
Help
Calendar
Contact Info
Register as a member
