The post describes a simple 220V mains transformerless LED candle light circuit which switches ON automatically in the absence of ambient light in the room and vice versa. The idea was requested by Mr. Don Technical Specifications I only dabble with electronics here and there but in trying to move from incandescent and CFL’s to […]
Automatic
Automatic PWM Door Open/Close Controller Circuit
In this post I have explained a simple PWM controlled automatic turnstile or door circuit featuring an automatic open/close action via a photo-interrupter stage. The idea was requested by Mr. Bruce Clark. Technical Specifications Thank you for a really fantastic service you provide. Would you please be so kind as to help me with a […]
Programmable Automatic Starter Circuit for Diesel Water Pump
In this post I have explained a programmable Auto-Starter circuit which may be used for getting a pre-programmed set of automatic sequential operations over a Diesel Water Pump as intended by the user. The idea was requested by Mr. Scott. Technical Specifications I am currently trying to figure out how to make up an auto […]
4 Automatic Staircase Lamp Controller Circuits Explained
In this post I have explained 4 innovative automatic staircase lamp controller circuits which will automatically switch ON and OFF the staircase lamps in response to an external trigger. We will discuss 4 concepts here, which are as follows: 1) Automatic Staircase Lamp Circuit using PIR The first automatic staircase light circuit describes a simple […]
Simple Automatic Plant Watering Circuit for Monitoring Soil Moisture
This automatic plant watering circuit can be used for automatically sensing soil humidity and triggering a water pump when the ground gets parched below a predetermined level (adjustable). Circuit Operation The circuit is rather straightforward and uses a single IC 555 as the main active component.Referring to the automatic plant irrigation circuit shown below we […]
Automatic Generator Choke Actuator Circuit
In this post I have explained a simple automatic generator choke actuator circuit using a straightforward delay OFF timer circuit and a solenoid device. The circuit was requested by Mr. Bob Perry. Technical Specifications I’m in need of a time delay schematic for the following project. I have an electric generator that I can start by […]