In this post I have explained how to make a simple classroom debate timer circuit which can be used to illuminate two sequentially toggling lamps to indicate the start and finish of the lecture time delivered by the respective members in the class. The idea was requested by Animale. Technical Specifications I’m trying to make […]
Timer and Delay Relay

Simple Pneumatic Timer Circuit
In this article I have explained a simple two step IC 555 timer circuit which can be used for sequentially operating any specified industrial mechanism system, in this application it’s used for operating a pressurized pneumatic ball throwing arm. The idea was requested by Mr. Ray Strong. Technical Specifications So glad I found this site, […]
Delay based Motor Speed Controller Circuit – Timer Controlled
In this post I have explained a delay OFF adjustable motor controller circuit so that the motor can be assigned a fixed predetermined operating time, or delay OFF time. The idea was requested by Mr. Cribey Technical Specifications I really like your website. It is very helpful for so many people. I am trying to […]
How to Make an Industrial Delay Timer Circuit
In this post we’ll study two simple externally triggered timer circuits for two different application needs, the ideas were requested by Mr. Alan and Ms.Stevanie Circuit Request#1 I only wish I understood electronics as you do. Would you please help me with a simple timer circuit which would be adjustable for up to 30 seconds […]
Programmable Solar Porch Light Circuit
In this post I have explained a porch light circuit with programmable timer controller which enables the connected LEDs to light up or shut off after some delay, as preferred by the user, thus it’s not entirely dependent on the solar panel parameters. The idea was requested by “Unknown”. Technical Specifications It’d be neat if […]
Aquarium Fish Feeder Timer Controller Circuit
In this post I have explained an aquarium feeder timer circuit which sustains a set of continuous operations as per a predetermined timing sequence through the respective pot controls. The idea was requested by Mr. Mike. Technical Specifications I am trying to build a timer circuit to control an automatic fish feeder. It needs to […]