CurrentViz: Sensing and Visualizing Electric Current of Breadboarded Circuits
summary
System embeds tiny 0402 resistors between breadboard headers and reads adjacent voltage drops with a cascaded multiplexer array, using an amplifier with selectable gain to compute amperage via Ohm’s and Kirchhoff laws. Hardware design cuts multiplexer and GPIO needs by 19% and 59% respectively versus naive designs, and added resistance is negligible. Software overlays real-time currents and numeric amperage onto Fritzing with a heatmap for debugging and teaching.
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chapters (6)
- 0:00Introduction to CurrentViz
- 2:01Problem with current measurement
- 4:09Hardware implementation details
- 7:01Software visualization features
- 8:24Circuit prototyping process
- 11:32Summary and Q&A
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