I’m new to the Particle community and IoT in general. My background is in software development but I have very limited knowledge of the wiring and electronics side of things.
I’ve had some minor success with a few basic projects and have recently undertaken the task of getting the Photon to work with a 16x2 LCD screen. I’ve been following these two pages to get setup:
I’ve had a bit of success but I’ve run into an issue that has me stumped. Basically I have power going to the LCD screen and have a potentiometer setup to set the text contrast but when I run the Spark-HelloSparky.cpp example all I see a black blocks rather than the expected text. What am I doing wrong?
I’ve attached a screen shot of the issue with a partial view of my wiring. I’ve tripled checked the wiring and it should match the wiring shown in Jon Gallant’s blog.
Any advice would be greatly appreciated