Stereo power amplifier 10+10W into 8 ohms based on the integrated PAM8610, suitable for systems that require high efficiency and little heat to be dissipated. By now, the miniaturization of electronic circuits is advancing unstoppably. It involves even those devices of traditional electronics such as audio amplifiers, which do not have a strict…
The author’s goal was to build a huge floor piano using readily available and inexpensive materials. The result is astounding considering it was built entirely at home. The current version cost him $ 300 per octave (mainly due to the wood and translucent acrylic, and about $ 50 for electronics) and $ 50 for the…
This project describes building a fully-featured 12 V PC fan PWM controller. The design can control up to 16 3-pin computer fans. The design uses a pair of Dialog GreenPAK™ configurable mixed-signal ICs to control each fan’s duty cycle. It also includes two ways to change the speed of the fan: a. with a…
Resin 3D printers are finally cheap enough that peons like us can finally buy them without skipping too many meals, and what means we’re starting to see more and more of them in the hands of hackers. But to get good results you’ll also want a machine to cure the prints with UV light;…
The robot arm uses three conventional PWM servos, and each angle is controlled by a variable resistor. The rotary potentiometer used B curve 10k ohm. Two DS3115 servo motors were used in the vertical direction, and MG995 servo motor was used in the swing direction. More info
In this project, we see how to show Pulse Width Modulation (PWM) on an oscilloscope. Along the way we identify some ways to calibrate our oscilloscope probe(s), and our oscilloscope. Along with the detailed explanation, some videos will be shown so you can’t go wrong! More info
https://www.youtube.com/watch?v=aKC7o6cbQiA I’ve been working on a little ESP32 expansion board/shield for an LED project I’ve been working on. One of the nice things about the ESP32 is that it has a peripheral known as “LED control” that provides 16 independent channels of PWM for controlling LED brightness, and my project uses that capability. One…
A new Raspberry Pi stepper motor and DC bonnet has being designed by Adafruit and is now available to purchase from their online store priced at $22.50. The Raspberry Pi bonnet can drive up to 4 DC or 2 stepper motors with full PWM speed control offering a great solution for robotics, DIY milling machines…
[bctt tweet=”Based on the Fishino UNO board, a simple and funny project to join practicality and fun together controlled from the “Blynk” app” username=”OpenElectronics”] Based on the Fishino UNO board, a simple and funny project to join practicality and fun together. We are going to build a robot on wheels controlled from the “Blynk”…
Active-Semi Inc presents Hydra-X10 and -X20: 32-bit ARM Core microcontrollers. With the PAC 52xx ICs on Hydra-X, users can apply high power input voltage of 52V, which is perfect for motor projects. An interesting piece of work, despite not open source hardware! According to the designers: One of the items that makes the PAC52xx…
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