Batteries are the heart of any electronic circuit, the impossibilities of making a wireless circuit without batteries is now eliminated by this DFrobot mini generator based Rf circuit. Remote controllers can be seen everywhere, and most of them are inseparable from the battery. However, we often encounter problems when using the battery, for instance, it…
Radio technology is the best monitoring and control solution for small and long range wireless hobby projects. With other wireless controlling technologies like Buetooth and Wi-Fi AT commands system configuration is required which are very complex and need a setup program. Wifi’s signal limitations and high power consumption, IR emission angle and inability to penetrate…
Geared Dc motors are used in a lot of hobby projects like in making some kind of robot car and moving robotics. But for precise movement it is very important to use special kind of motors. For example for a balancing robot, we have to use stepper motors (proper stepping of wheel). Because in balancing…
There are two type of digital circuits, some need a clock pulse trigger known as synchronous and other are asynchronous (no need of trigger). Asynchronous action is fast but unpredictable that’s why whole the microcontroller world run at a desirable clock. Nowadays CPU working frequency is very high (current Gen Intel i9 13 gen can…
There are a lot of programmers available which helps to covert the USB data into UART form. Which then allows to flash the complied data into microcontroller’s memory. But some of the programmers are compatible with Arduino and has DTR reset pin. Another big problem is that these programming boards has an old USB ports…
PCB (printed circuit boards) are really very important to minimize the circuit design area and overall cost. PCB manufacturer quality and capabilities depend on the material and minimum featured sized of tracks width. Some of the manufacturers provide up to 6 layers of PCB. I designed and integrated the Arduino NANO with NRF24L01 trans receiver…
I made many projects regarding Audio amplifiers and preamplifiers but this tutorial is for the visual music experience. I am going to make a music reactive neopixel based LED strip. The LEDs will glow according to the change in beat and the color is changed automatically. This type of multi color RGB pattern gives a…
A new version of Arduino UNO PRO is out now, I changed the orientation of components and a specific improved design. Now has more compatibility options with micro-USB port for power delivery and programming. This Arduino UNO pro version has all the similar features to the previous one, you can see version 1 from here….
Previously, I made some tutorials regarding current measurements using shunt resistor. Basically, shunt is small known resistance which is in series with the load. And by measuring the voltage drop across the resistor we can find the value of current flowing in the circuit. All credit goes to Ohm’s law: V=IR, by knowing the two…
It is very easy to calculate the hexadecimal equivalent to a decimal number using dividing by 167 method. But this method is very long and sometimes very confusing when comes to large numbers. here I have a Arduino based decimal to hexadecimal converter. But let’s know more about hexadecimal number system and why it was…
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