Power Pins
- V+ - this is the power pin. It is rated for 3V to 30V. You can use a voltage much higher than the signal voltage - so even if you are using a 3V microcontroller, this pin can get up to 30V power.
- GND - common ground for power and logic.
Input Pin
- In - this is the signal input pin. When the pin is high, the Output pin is triggered and switched to ground. The signal can be between 2.5V and 20V
Output Pin
- Out - this is the signal output pin. It can be used for driving motors, inductors, high power LEDs, single-color LED strips, or other loads up with to 1.5 Amps continuous draw, 3 Amp peak. It is switched to ground when the In pin is high.
Note that the JST PH connector is only rated for 2 Amps continuous.
STEMMA JST PH
- STEMMA JST PH - 2mm pitch STEMMA JST port with connections for V+, GND and In. Plug in a 3-pin STEMMA JST PH cable with headers or alligator clips on the end and you can easily wire this board up without any soldering at all. Note that the JST PH connector is only rated for 2 Amps continuous.
Output Terminal Blocks
- Terminal Blocks - two terminal blocks are located on the front of the board for the output. One block is connected to power, labeled +, and the other, labeled -, is connected to Out and is switched to ground when the In pin is high.
Signal LED and LED Jumper
- Signal LED - In the lower left corner, below the STEMMA connector, on the front of the board, is the signal LED, labeled Sig. It is the red LED. The Signal LED lights up to let you know when the load is being triggered.
- Signal LED jumper - This jumper is located on the back of the board directly above the GND pin and is labeled Sig. Cut the trace on this jumper to cut power to the "Sig" LED.
Power LED and LED Jumper
- Power LED - In the upper left corner, above the STEMMA connector, on the front of the board, is the power LED, labeled ON. It is the green LED.
- Power LED jumper - This jumper is located on the back of the board directly behind the JST-PH In pin and is labeled On. Cut the trace on this jumper to cut power to the "on" LED.
Page last edited March 08, 2024
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