Month: November 2015

Arduino Controlled Adjustable Constant Current Source

Did you know you could use the Arduino to control the amount of current from a constant current source? Another great project from Henry’s Bench, this experimental project uses an MCP4725 Digital to Analog Converter, an LM358 Op Amp, an INA219 Current Sensor and a logic level N-Channel Mosfet to create a constant current source. …

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The Maker’s Guide to the Zombie Apocalypse

Defend Your Base with Simple Circuits, Arduino, and Raspberry Pi Where will you be when the zombie apocalypse hits? Trapping yourself in the basement? Roasting the family pet? Beheading reanimated neighbors? No way. You’ll be building fortresses, setting traps, and hoarding supplies, because you, savvy survivor, have snatched up your copy of The Maker’s Guide …

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Plotting Light Levels With Arduino 1.6.6

Long ago in a galaxy far away, we built a simple CdS Light Sensor (Sometimes called a LDR). Now with the real time plotting capability of Arduino 1.6.6, it’s even more fun! The original project requires no changes, just pick Serial Plotter from the Tools menu. CdS Photoresistor – https://amzn.to/2WKv7oH 10k Resistor – https://amzn.to/2WLuB9S Code – http://arduinotronics.blogspot.com/2012/03/light-sensing-with-cds-ldr.html Plotting …

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