One thing is great about microcontroller ICs, these are available almost in all parts of the globe and electronic retailers. Introduction Fundamentally microcontroller devices are popularly used in applications involving assessments of the surrounding environment and in similar electronics. You could find these devices being used for displaying a certain parameter, in motor control applications, […]
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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 […]
Float Switch Controlled Water Level Controller Circuit
The post narrates a simple water level controller circuit using a float switch mechanism. The idea was requested by Mr. tpraveenraj. Technical Specifications I’m a electronic hobbyist from software field. So I try with the things in the weekend. I saw your blog recently and really admired to test this circuit, and when I went […]
High Voltage Transistor MJ11021(PNP) MJ11022 (NPN) Datasheet – Complementary Pair
MJ11021(PNP) MJ11022 (NPN) are high voltage complementary pair Darlington transistors suitable for all applications that involve high voltage high current such as in motor control, inverters, etc. So I have explained the datasheet and the main specifications of the devices: Main Electrical Features MJ11021(PNP) MJ11022 (NPN) are 250V, 15 amp complementary Darlington transistors Being Darlington […]
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 […]
DTMF based FM Remote Control Circuit
In this post I have explained a DTM based FM remote control circuit which can be used for controlling 4 individual appliances remotely by pressing four corresponding buttons on the DTMF transmitter handset. The idea was requested by Mr. Sunaabh Sarkar. Technical Specifications I came across your blog “Homemade The Designs Just for You” quite […]