A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
Introduction In this post we will see on controlling RGB LED using raspberry pi and python. RGB LED means red, blue and green LEDs. RGB LED products combine these three colors to produce over 16 million hues of light. Things…
Introduction This weather station using NodeMCU uses open weather api from openweathermap.org. Parts required for this project NodeMCU OLED I2C display Some wires and USB data cable 5v v battery or power supply What is NodeMCU? Its a Development Kit…
Lighting LED using Raspberry Pi To lighting LED using Raspberry Pi we first need Python GPIO. In my previous post on Raspberry pi we have installed raspbian. Next thing is to start experimenting on it. In this post we will see how you can setup…
LED JAR This is the simplest LED light. It uses a Nokia BL-5C battery, 3W LED and Li battery charger. For step by step guide refer the following URL
Circuit Diagram for AC LED Light Resistor=240v -( Number of LEDs *3.3) A =240 – (41*3.3) A =7000 Ohms Either use 6.8k or 7.1 K with power rating of 7-10 watt or 4*2.1 k 2watt Suggested Layout for AC LED…
LED Driver using 7805 The 7805 can be converted into a content-current device by connecting a resistor as shown below. As the 12v rises from 0v, the 7805 starts to work and when the input voltage is 4v, the…
The Led torch with adjustable brightness circuit uses LM3914 as the basis of a 10 step variable brightness current-regulated white LED . This circuit has only four components in the control and regulation circuit: R1,R2, VR1 and LM3914. Part List 1.…
All mains powered LED circuits work with 240 volt AC current. Mains powered LED – Single LED The power diode in the first diagram is designed to discharge the 220n during one half of the cycle so that the capacitor…
In this post you will find circuit on how we can light up white LED on 1.5 v supply. Heart of the circuit is the transformer winded on 2.5mm by 0.5 mm core using 0.095 mm wire. 2 White LED…
Alternate red and green flashing LED using 9 volt battery Part list R1,R2 – 100 Ohm R3,R4 – 105 K C1,C2 – 10 μF 25 Volt T1-T2 – BC 548 D1-D5 – Red LED D6-D10 – Green LED 9 Volt Battery