Category Archives: Ideas

Matchbox Car v1

This build consists of a tiny DC motors ripped from a pair of 9g servos, a h-bridge motor controller, an el-cheapo 8 bit pic and a 100mAh 3.7V LiPo battery. Circuit : (click schematic for pdf) Code: What’s coming next … Continue reading

Posted in Hacks, Hardware, Ideas, Microcontrollers, PCBs, pic microcontrollers | Tagged , , | 4 Comments

Matchbox Car – could it work?

All the parts were lying around so with a bit of solder and hot glue this is what happened: This was done to test if the motors were powerful enough to push the weight of the matchbox. The answer is … Continue reading

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Tiva C launchpad FFT with real time plotting using pyQtGraph

Circuit Diagram: The biased signal generator signal is connected to AnalogIn 1 on the Tiva C which is pin PE_2. Signal Gen and Tiva C ground is common. The two 10k resistors from a voltage divider which will halve the … Continue reading

Posted in C, Development Boards, Ideas, Python | Tagged , , , | 20 Comments

Low power magnetic hold and release mechanism

How it works: Explanation of the idea: With the inductor and magnet combined, ferrous metal objects can be held without any power indefinitely. To release the metal object the magnetic field holding it up needs to be temporarily cancelled out. … Continue reading

Posted in Hacks, Hardware, Ideas | Tagged , , , , | 17 Comments