Top posts of year 2022
Looking back year 2022. This year was very interesting in many aspects. We started going to office from March 2022 first time since March 2020 covid induced locked down. It was good to meet people face to face. But still…
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.
Read MoreTop posts of year 2022
ESP8266 module
Overview ESP8266 is a 3V WiFi module popular for its Internet of Things applications. It is a low-cost Wi-Fi microchip, with built-in TCP/IP networking software, and microcontroller capability, produced by Espressif Systems in Shanghai, China. ESP8266 has 8 pins, namely:…
TP5100 Single Double Lithium Battery Charging Board
What’s in the board ? TP5100 4.2v 8.4v Single/Double Lithium Battery Charge Management Lion Battery Compatible 2A Charging Board is a double switch buck 8.4V, single cell 4. 2V lithium battery charge management chip. Its ultra-compact QFN16 package and simple…
Servo motor control using Raspberry Pi PICO
In this post we will see how to use servo motor using raspberry pi PICO
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Simple 40 Watt Inverter using CD4047
Parts Required Above is a very basic 40 watt invertor circuit.
How to convert image to base64 string
Why do you need to convert? You may have html file with image and do not want to keep your image file separately with html file. In such case you can convert image to base64 string and use it in…
How to send whatsapp messages from your IOT projects
Problem statement You have made an IOT project e.g.: home automation and wanted to send whatsapp messages to your self or some registered number for all the alerts. Here is a simple way to send messages in whatsapp using Whatabot…
Audio amplifier using PAM8403
This is a basic circuit idea of making audio amplifier using PAM8403 chip. Note that this is readily available as a module. But if you need to try your hands on it or want to modify it following circuit may…
Simple FM Radio using TEA5767 Module
Introduction The TEA5767 is a single-chip electronically tuned FM stereo radio module for low-voltage applications with fully integrated Intermediate Frequency (IF) selectivity and- demodulation. The radio is completely adjustment-free and only requires a very few external components. The digital tuning…
Getting Started with Node Red on Raspberry Pi
What is Node Red ? Node red is an Open Source flow based tool for wiring together hardware devices, APIs and online services. It provides a browser-based flow editor making it very easy to use and it requires little programming…