The Arduino Edge Control board functions differently than the rest of Arduino boards when it comes to the way its powered. The main difference is that a 12V power supply is required to fully run sketches that are uploaded to the board. Besides, a CR2032 battery must be inserted at all times in the battery mount.
Operating the board without a CR2032 battery could cause undesired behaviors with the RESET button and might also brick the board.
The Edge Control board is powered differently for programming the board compared to its operation mode. To upload a sketch we need to power the board with a micro USB cable. On the other hand, to run the sketch a 12V power supply is needed. Additionally, the board can be powered by an 18V solar panel. These scenarios are explained in detail below:
Power for programming
The Edge Control board requires a micro USB cable connection to the PC to program the board. The 5V supplied through the USB cable is sufficient to run the MCU and upload a sketch to the board. However, this configuration does not provide enough power to operate other modules of the board, so the main Edge Control features will not work (neither the built-in LED) when the board is powered via USB only.
If you need further instructions to upload a sketch follow the Getting Started guide that shows how to program the Edge Control board.
Power for operation
A 12V power supply is required to enable most of the features of the board including the I/O expander, multiplexers, DCDC converters and drivers for the valve control. You can use a 12V power supply/adaptor or a 12V Lead-Acid battery.
Connect the 12V output to the B (Battery) and GND (Ground) pins of the edge control. Find these pins by looking for the set of pins that are labeled as "RELAY" at the back side of the bard. Make sure the 18 pin connectors (phoenix contact 1844646) are connected to access these pins easily. Then, simply push the orange tab down and insert the wire to complete the connection.
Additionally, an 18V solar panel can be connected to power the board and/or charge the Lead-Acid battery battery. Use the S (Solar) and GND (Ground) pins to connect the solar panel to the board.