I’ve been following the comments on the Sparkfun serial graphic LCD backpack and Sparkfun has recently released upgraded the firmware. Since my unit is pretty old, I re-flashed it tonight, but it still acts funny. It’s acting like two vertical bands in the LCD are not getting addressed.
I’m wondering if this is an issue other folk are having, or if I’ve got a genuine broken unit. Here’s what the display looks like during the built-in demo. Bummer. The regulator on the backpack sure gets hot too. I think it’s a bit underrated.
Flexing the boards seems to change the behavior. Maybe I’ve got a broke trace or a bad solder joint.
Thinking while writing, I’m realizing that the vertical bands in the display aren’t dead, they are just getting skipped. Here’s another shot from the internal demo.