Hello guys, I am making amplifier circuits and controllers for a long time. But there are some issues with big amplifiers, need high power supplies, big heatsinks, dual channel power and low output. Even we need a big PCB and other combinational modules for controlling bass, treble and subwoofer at all. These become very messy,…
Hello guys, today in this tutorial we have MAX30100 pulse oximeter sensor. We will pair this sensor with our Arduino and check the operation. This will be a simple project and you will get the circuit diagram and code here below. In these types of sketches most of the work is done by libraries itself,…
Hello guys, as you know I don’t have any 3d printer till now. So, I made my projects and 3d styled cases using PVC pipes. The cutting and molding of PVC can be done using heated knife or hot cutter. Heating a knife on gas stove or by electric nichrome wire is not recommended in…
I made 2 different oscilloscope and these are featured on this platform. And now I came up with an idea of dual channel oscilloscope. This one has main microcontroller as Arduino and 1.3” OLED display. This time I also have battery operating options and onboard charging circuit also. You can make this on breadboard first…
Hi guys, Today we are going to make a SPY Wi-Fi camera using ESP32-CAM. I have some ideas to install that camera in a Led bulb cover or phone charger. Because some of the products related to this is also available on amazon. But I want to see the data over Wi-Fi or Internet. And…
What if I will say about using a Transformer-less power supply for low power projects. There is no need of any SMPS or PSU. Also it is very easy to make all the data, Gerber files, PCB layouts and circuit diagram are available here. To give a better and professional looks we will use JLCPCB…
Hello guys, today we are going to setup our 433Mhz transmitter and receiver modules with their supporting cards. We are using cheap 433mhz modules and we are not using any microcontroller with this. The dedicated encoder and decoder IC’s can do the job perfectly. 433MHZ modules: Cheapest RF (Radio frequency) modules available in market and…
Hello guys, today we are going to make this RGB ring using Neo pixel led’s. we will learn, something new about Neo pixel, how to operate them, how to show different animations and how to make your own RGB neo pixel ring. In last we will control them using Arduino Nano board and make some…
hello guys, today we are going to make a smart talking voltmeter. This one is built on Arduino and gives the reading by speaking itself. This function is cool and attractive because when we are working on circuits, we have to see again and again the readings and then switch the voltmeter leads to measure…
Hello guys, today we are going to have a look on, How I made an Arduino based FM and then turn its circuit into a fully functional PCB. In this tutorial you will learn, basic FM working, Arduino code for this FM, range, speakers, antenna and amplifiers used in this circuit. This type of digital…