Jeremy Leach
Senior Member
Hi, firstly apologies as I know some of this is old ground on this forum, but haven't quite been able to find the answer.
I've soldered up the AXE033 LCD kit. I've done one before with the Datalogger kit and it worked fine in serial mode. I need this one to work in i2C mode.
It doesn't work. Not a glimmer even adjusting contrast. My question is : Do you have to do the time-message test (shorting the CLK pins) BEFORE soldering the link in J1 for i2C mode? I went ahead and soldered it without bothering to do this test (confident eh).
I've checked power and checked the soldering and it all seems ok. Plus twiddled the contrast. Not sure....
I've soldered up the AXE033 LCD kit. I've done one before with the Datalogger kit and it worked fine in serial mode. I need this one to work in i2C mode.
It doesn't work. Not a glimmer even adjusting contrast. My question is : Do you have to do the time-message test (shorting the CLK pins) BEFORE soldering the link in J1 for i2C mode? I went ahead and soldered it without bothering to do this test (confident eh).
I've checked power and checked the soldering and it all seems ok. Plus twiddled the contrast. Not sure....