27-04-2017, 01:17
(26-04-2017, 21:56)clubjoker Wrote: - When the big clock screen kicks in, the 3.3V reg cools down so it's just a bit warm to the touch even though the TFT is on (this was a surprise to me!)
- Press the push button PB1, back to the summary screen, and the 3.3V regs gets HOT
If you did that experience after 8PM, the explanation is simple: Between 8PM and 8AM (or based on the Solar Radiation value, if available), the backlight level is automatically reduced when the Big Clock is shown, so less current is draw from the 3.3V regulator.
What about the voltage regulator on the Meduino board. Is it hot too? It shouldn't.