Arduino 11: TK Homeostat with Parallax LCD 2×16 Display
The Parallax brand LCD display is easy to use with the Arduino. It only needs a single data pin on the Arduino, and 5 V and ground connections. You need the Parallax LCD library…
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Economical hydrogen production by electrolysis using nano pulsed DC
Economical hydrogen production by electrolysis using nano pulsed DC Authors: Â Dharmaraj C.H 1, AdishKumar S.2 Abstract Hydrogen is an alternate renewable eco fuel. The environmental friendly hydrogen production method is electrolysis. The cost of…
Radiant Oscillator Circuit / Don Smith Part 7 A: One Minute Run Time WITH Circuit 1 Farad Capacitor
2x 2n3055 npn bipolar transistors 2x ignition coils with no resistors -Test leads for connections -at least one 12vDC 3 watt led bulb -analog ammeter 0-5 amp (or 0-1Amp would work:) -12 volt battery…
Radiant Oscillator Circuit / Don Smith Part 7 B: One Minute Run Time NO Circuit 1 Farad Capacitor
2x 2n3055 npn bipolar transistors 2x ignition coils with no resistors -Test leads for connections -at least one 12vDC 3 watt led bulb -analog ammeter 0-5 amp (or 0-1Amp would work:) -12 volt battery…
Arduino: TKs FFTDuino 4: Color Organ Final Form
I made a couple of circuit boards, including a “color organ shield”, and found an ideal enclosure for the Color Organ. The project is now a stand-alone FFT Color Organ that works from ambient…
Arduino 4: TKVoltmeter, Potentiometer LED Sweep, Circuit Controller
Here I use the example sketch called “arrays” and blended it with the “potentiometer” example from the basic Arduino library with some simple modifications to serve as a potentiometer LED sweeper, which can also…
1.2V simple ‘555 A-Like’ circuit
Low voltage, low current possible solution for those without 555 timers in the spares box. The basic circuit is much like a Joule Thief, similar toroids, windings and transistor can be used. The Collector…
Tiny Slayer Exciter mounted on a circuit board.ASF
This is a tiny Slayer Exciter mounted on a circuit board. I show it here lighting up a 4 watt fluorescent tube as well as a neon bulb and three LEDs. The circuit is…
Minnie Low-Voltage Cutoff Circuit Test
Developing and testing the Minnie LiPo Low Voltage Cutoff circuit. Schematic at the end 5:14. NOTE: The S Weir mods make the circuit work better. Use a 2n7000 mini-mosfet instead of the BC337 and…
Electric OU: Grey Box Q-17 Circuit Heat Output vs DC Input Run 1
This is the first experimental run of the test series, more or less a shakedown run. I am testing the Lost Grey Box circuit published by Rosemary Ainslie in a set of photos last…
