Shared projects

DevBit ATmega328

2 layer board of 0.70x1.60 inches (17.78x40.64 mm).
Shared on November 20th, 2016 02:05.

Tested this design on 11/19. The Tx and Rx pins need to be flipped. Also pins 13, 12, and 9 are shorted with a trace going to the LED. These errors will be fixed in the next version.

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Notch Filter for Mains 60Hz/50Hz

orlandohoilett.

2 layer board of 0.75x0.75 inches (19.05x19.05 mm).
Shared on October 30th, 2016 03:00.

Simple notch filter for mains. Uses “twin-T” configuration. https://www.circuitlab.com/circuit/e8gar3/60hz-notch-alt/

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PulseFit Mini

orlandohoilett.

2 layer board of 1.00x1.00 inches (25.43x25.43 mm).
Shared on September 18th, 2016 03:45.

Quarter-sized version of the PulseFit. Made with miniaturization in mind. Power it from a simple voltage source (3V-6V) and read the pulse from an Arduino or any other microcontroller.

https://github.com/hoilett/Pulse-Sensor-with-Auto-Threshold/tree/master/PCB_Designs/PulseFit-Mini

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Square Wave Oscillator

orlandohoilett.

2 layer board of 0.80x0.46 inches (20.32x11.58 mm).
Shared on September 10th, 2016 22:30.

A simple square wave oscillator using an astable multivibrator. Has an LED output for visualization. I used this oscillator for my Team Valor Light-Up Badge for Pokemon GO.

http://www.instructables.com/id/Team-Valor-Light-Up-Badge-for-Pokemon-GO/

Tested and works.

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