Just a small question about the grove OLED module and the supplied code.
The circuit diagram shows VDD and VCI connected to 2.5V but the supplied code does this:
sendCommand(0xAB); // set vdd internal
which sets VDD to use the internal regulator. Which doesn’t seem necessary if VDD is already supplied. Also, the SSD datasheet (8.10) says that VCI should be higher than 2.6V to do this. In other words, figure 8.20 matches the Grove circuit diagram so shouldn’t the code be:
sendCommand(0xAB); // set vdd external
Nice little module by the way. I keep buying these as they save me so much time and pain doing it myself!