I am trying to run a low-power, battery powered Arduino on a breadboard. I followed these instructions exactly:
https://www.openhomeautomation.net/arduino-battery/
I uploaded the "Blink" sketch to the ATMEGA238P-PU from another Arduino then I installed the chip on the breadboard and connected all the components exactly as described. The led is off and not flashing. See the image below:
Things I already tried:
- Had the ATMEGA + led + 220 ohm resistor installed on the Arduino Uno board. The led starts blinking as expected, the ATMEGA chip itself is functioning as expected.
- Connected the led + 220 ohm resistor to VCC and GND. The led lights up which means both the led and the resistor are in good shape.
- Swapped every component out with another identical one, one at a time. That did not help.
What else can I try to track down the problem? If anyone has any suggestions, it would be greatly appreciated!