I made many amplifiers and tone controlling boards in past. But most of them either work on dual mode power supply or need a lot of external components. Today, I have an idea of single power supply transistor based stereo type preamplifier. This preamplifier circuit is used to control volume, bass and treble of any…
Recently, I got a vibration sensor from one of my friend, which is highly sensitive to vibrations and I want to convert this into a fully fledge vibration sensor module. The sensor is SW-18010P has two wire interface. This one is also known for waterproof action, shock spring switch. We will use this sensor with…
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…
I want a smart light, which can be turned on/off just by sensing the human body. Then I found some solutions, they are using PIR sensor to sense the motion as some additional circuitry for the timer. But most of them are rated below 2 stars. Because they are expensive, low build quality, fuse the…
There are various sensor monitoring methods are available some of them using IoT and others using offline protocols like Bluetooth and BLE. But the offline method doesn’t offer a good range and online methods are expensive and very compilated. Today, we are going to make a simple sensor monitoring system using LoRa (long range radio)….
I am aware of sensors, modules and integrated circuit used with microcontrollers like Arduino. And I think Arduino UNO is still the first choice of most hobbyists even after 10 years. Because of its open-source environment and futuristic Software. Developers released some easy to program software’s for it. Arduino Uno is the first MCU of…
I need a big RGB stripe for my gaming room, so that I can stick that on my setup. But I need one with better durability and brighter LEDs with Good heat dissipation. The WS2812 RGB neo pixels may do the fine job but these strips come with flex PCB. Which I would not recommend…