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Found this great app for circuit design and simulation for the ipad the Circuit diagram pcb design Circuit bs icircuit costs least arduino
Home automation system using smartphone and bluetooth part 2Easyeda: a free cloud-based tool for schematic capture, pcb layout, and .
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Home Automation System Using Smartphone and Bluetooth Part 2 - Arduino
Circuit Diagram App For Ipad
EasyEDA: A free cloud-based tool for schematic capture, PCB layout, and
Circuit Diagram Pcb Design