Published: May 10, 2021

Three of Chris Hill's projects –Circuit Playground Extension E-Textile Debugging Tool;ÌıE-Textile Logic Probe Debugging Tool; and aÌıWearable Mini Voltage Meter– were featured this month in "Instructables," an online community of makers. But this wasn't the first time the ATLAS PhD student's projects were featured in Instructables. He has a slew of them, and you can check themÌıout !

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The Circuit Playground Extension is a tool that enables the user to design e-textile circuitry with debugging in mind. To use the tool, the user would sew the extension into their project with the holes in the extension's substrate matching with the pins that the user wants to connect to on the Circuit Playground. The user would then attach stainless steel thread to the magnet in Circuit Playground pins and to the corresponding hole in the extension.

Logic probes are useful debugging tools that are used to analyze logical states (0 and 1) in a circuit, and they are also cheap and easy to build. Chris HillÌıtook this concept and made a logic probe for e-textile makers, specifically beginner students, to easily test and debug their code and circuitry without needing a multimeter.

The wearable (or rather attachable) voltage meter is a measurement device that can be added to any fabric or metal surface. A regular multimeter can be difficult to use when aÌıwearable or e-textile is on a person's body or in movement; thisÌılightweight and dependable voltage meter solves that issue andÌıcan be easily added to most projects. The meter has a magnet on the back. Another magnet or metallic object would be usedÌıto secure the meterÌıto fabric.