The OLED COB character module doesn't work, how to make it functional?
Our company's chacacter modules use 6800 family as a foundation. So, first check the Timing setting, if it is correct or not? Second, check if the hardware connection has problem or not? Third, check if it follows the right initial steps or not?
Fig1: Character type 6800 Timing diagram.
Fig. 2: Write/Read timing