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…
Whenever we have to use video output in any IoT or robotics project then Esp32-Cam module comes into mind. It is the one which can fulfil all the needs and has comparatively low price than other modules available. The good this is we can use SD card to store the video and images or we…
In the previous GNSS interfacing tutorial we have seen the location readings in GPRMC and GPGGA format on the serial monitor in Arduino IDE. We are using the same RYS8830 GNSS sensor which has a very small form factor and high gain small antenna on top. This RYS8830 is developed by Reyax technologies, here we…
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…
Today I have another Class D amplifier circuit, this amplifier is based on TDA7498 IC. TDA series is known for its high performance and good sound quality. You can say this IC is the king of Class D amplifiers.TDA7498 comes into two type of SMD packages. One is TDA7498-M which has a 100w mono channel…
Soft base with high treble settings is the need of every stereo system. And today I have TL072 jfet operational amplifier-based audio preamp. All the controls are running on a single two channel op amp IC. Simple RC filters are used for the bass and treble audio separation further regulated by operational amplifier. This operational…
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…
Today I have TDA2030 amplifier project here to share with you guys. This IC is developed by ST microelectronics and TDA series is known for its high-fidelity sound experience. TDA2030 is very old and discontinued by ST but still available due to huge stock. Some other manufacturers also making the same but Original IC has…
In previous tutorial I made a TDA2030 stereo based 28w amplifier. which is operated by external power supply. but how to use an amplifier without improper signal strength and frequency. That’s why preamplifiers come into market. Because I did not want more regulators/ wires and power supplies here in this circuit, I am making a…