The Buzzer Jumper completes the buzzer driver circuit and connects the voltage input (positive) pin of the buzzer to 3.3V via a 10Ω resistor. Disabling this LED is recommended if you are using an external LED connected to the STAT PTH pin. Open the jumper to permanently disable the Status LED on the breakout. The STAT LED Jumper connects the anode of the status LED to a transistor via a 1kΩ resistor so it can be controlled by the barcode module. Open the jumper by severing the trace between the two pads to disable the Power LED. The Power LED Jumper connects the anode of the power LED to 3.3V through a 1kΩ resistor. ![]() Check the Eagle Files for the specific location. The PWR jumper is covered by the DE2120 ribbon cable in this photo but we promise it' there.
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