In article below explains the control circuit for an automatic tennis ball throwing machine, designed to throw a tennis ball through a mechanized catapult machine, controlled with powerful motors. In this article I have explained the motor control circuit which will toggle the catapult mechanism back and forth, with a 2 second time interval, while […]
Machine
Adjustable Drill Machine Speed Controller Circuit
The proposed variable drill speed controller circuit maintains a constant (adjustable) speed over the drill machine motor, regardless of the load. One of the most used power tools is the power drill machine. Despite its innumerable advantages, the power drill has one major setback – constant high speed for many applications. Even when there are […]
Electronic Voting Machine with SD Card Module
In this post I will show how to construct a circuit for an Electronic Voting Machine using Arduino and SD card module where the election data is stored in the SD card. By UPDATE: This circuit has been upgraded to an improved version in which the results can be viewed over an attached LCD display, […]
Simple Tea Coffee Vending Machine Circuit
A simple tea, coffee vending machine circuit idea is explained here which allows a customer to access the beverage with a press of a button and by inserting a genuine 5 rupee coin. The idea was requested by Mr. Ramesh. Circuit Objective and Requirement I need the water puling mechanism like coffee vending machine if […]
Mini Welding Machine Circuit for Small Welding Jobs
A welding machine is an electrical device which is able to generate a very high current at relatively low DC voltages. This high current output can be suitably used for creating the intended welding arcs and welding joints. The welding joint is created by fusing the welding rod on the joint area through a high […]
Free Energy Generator Circuit – The N-Machine
When this free energy generator called the N-Machine was developed by the famous physicist Bruce DePalma he could implement a 100 kilowatt generator right in his garage with ordinary tools. His machine could power his entire house electrical completely free of cost, forever. But sadly he could never use it since making such device or […]