In this post we are going to make a digital socket timer using Arduino whose countdown time can be witnessed via 16 x 2 LCD display. By Girish Radhakrishnan Introduction The proposed circuit is general purpose timer with display and few buttons for setting the time. Once the time is set output goes high and […]
Time Delay Relay
Cell Phone Charger with Timer
A simple cell phone charger with timer circuit is presented in the following article, which could be used for charging a given Mobile phone for a specified predetermined length of time. The idea was requested by Mr. Saad. Timer Controlled Smart Phone Charger Could you design me this charger circuit ? Input 230V 60 Hz, and […]
Timer for Fitness Gym Application
In this post we learn how to make a timer circuit for fitness, or gym workout application. The idea was requested by Mr. Jan. Adding Delay Timer to Gym Equipment I need a circuit diagram for a timer which is used in a fitness gym. It consists out of 5 x incandescent (5 channels) 220V colored […]
Submersible Timer with Pause Feature during Mains Failures
The post explains a submersible pump timer circuit programmed to cycle at 60 minute interval for watering the fields consistently. It also includes a time “memory” feature which ensures that the timer “remembers” the counting during mains failures, and restarts exactly from where it was interrupted when mains power is restored. The idea was requested […]
Automatic Food Warmer Lamp for Hotels
The post discusses a simple food warmer lamp timer circuit for restaurants and hotels which can be used for automatically switching OFF the lamps after a predetermined time whenever the food under the lamps are idle or in the absence of an interaction under the lamps, thus saving precious electricity. The idea was requested by […]
Submersible Pumpset Timer – Circuit Diagram and Working
The post details a timer circuit for submersible borewell pumpset which alternately switches the pumpset ON/OFF at a predetermined rate in order to allow the ground water sufficient time to restore at regular intervals and to ensure a consistent water supply to the attached overhead tank. The idea was requested by Mr. Siva. Switching Submersible […]
IC 4060 Timer Latching Problem [Solved]
![IC 4060 Timer Latching Problem [Solved]](https://www.homemade-circuits.com/wp-content/uploads/2016/11/IMG_0330-300x203.jpg)
The post talks about an IC 4060 timer circuit problem implemented in a coffee wending machine, in which the circuit simply stops working each time its stipulated delay period is lapsed, even after a complete power switch OFF and ON. The question was presented by Mr. Kenndy and was solved through the following email discussion: […]
IC 555 Timer for Switching Two Alternate Loads with Predetermined Delay
In this post we learn how to make a simple IC 555 based alternate relay timer circuit for toggling a couple of loads alternately with a specified length of delay, as determined by the calculated values of the relevant components. The idea was requested by Mr. Sanjoy. Switching Two Loads Alternately I am a regular […]
Kiln Temperature Controller
A programmable sequential timer along with a triac dimmer is configured for making this kiln temperature controller circuit, further details are explained in the following article. The idea was requested by Mr. Joe. 220V Kiln Controller with Timer I’m hoping you have some time to have a crack at a design I’m after. I’ve been trying […]
Water Saving Irrigation System using Timers
The article presents a simple water saving irrigation system circuit idea which can be used for implementing an efficient water management and control in farms and irrigation systems. The idea was requested by Mr. Ajinkya Sonwane, Mr. Akshay Kokane and Mr. Kunal Raut, studying in AISSMS IOIT College of Engineering. Circuit Objective As per the […]
Bathroom Lamp Timer with Buzzer
The simple bathroom lamp timer circuit features a delay OFF timer which switches OFF the triggered lamp after a set predetermined time delay, additionally the circuit also includes a delay ON timer circuit which is appropriately set such that a warning tone is generated a few seconds before the lamp is about to shut off. […]
LED Timer Indicator for Board Games
The article presents a simple LED indicator timer circuit which can be used with board games for indicating the elapsed time or the time consumed by the player to complete his or her turn. The idea was requested by Mr. Shane Robins. Technical Specifications Hope all is well with you. I am relatively new to circuitry and […]
3 Stage Industrial Camshaft Timer
The post explains a simple sequential timer designed for implementing a specified set of actions involving a 3 step relay activation which in turn is used for executing the desired mechanisms. The idea was requested by Mr. Ali. Technical Specifications I look at your site occasionally and this time round I am looking for a […]