View Single Post
Old 12 January 2018, 16:23   #747

Join Date: Dec 2009
Location: UK
Posts: 3,024
Originally Posted by kaffer View Post
Is the LCD connected to 5v power (not 3v)? If connected to less than 5v then display contrast is very poor.
The backpack has a bright red led lit so power is getting to it, just not the display. SDA, SCL and GND are plugged into the pins where the original LED was and the +5v tapped off the pin near the power connector, might have soldered pins on for that though!
BarryB is offline  
Page generated in 0.04170 seconds with 11 queries