“The e-textile logic injector tool enables the injection of a high (1) logical state into a digital circuit. With this tool, makers can simulate a digital write high (digitalWrite (pin, HIGH)) before writing any code. This enables them to test their circuitry for shorts, loose connections, and polarity before adding complexity through code.
To use the tool, disconnect your microcontroller from power (recommended), then attach one alligator clip to your board’s GND pin and the other clip to the magnet on the logic injector. Press the probe against any thread that you want to inject a signal into and then press the button on the logic probe to test the component (video).
This material is based upon work supported by the National Science Foundation under Award #1742081. The project page can be found here.
1x Custom PCB
1x 6X6X11 push-button switch
1x 2.5mm x 33.35mm pogo pin probe
1x Red LED (I recommend flat-top LEDs for easier access to the button)
1x 330 resistor (for LED)
1x 330 resistor (in series with the pogo probe, can be changed based on your component current needs)
1x Lithium Ion Battery - 110mAh
1x 10x2mm disk magnet
1x Lipo JST header”