Laser arm

Facelesstech published a new build: So some time last year I ordered one of those servo 2 axes (pan and tilt torret) arm kits from aliexpress. It was fun to play with but I didn’t quite find a reason to use it in a project. Then I seen this project on hackaday and a light bulb went off […]

Modifying a Tower SG90 servo for continuous rotation with potentiometer position sensing, Part 1: Investigation and continuous rotation

Keith wrote an article on modifying a Tower SG90 servo for continuous rotation with potentiometer position sensing: On its own, the servo takes power, ground, and a position input and moves the shaft within a range of rotation to match the angle requested on its input wire. It has one or more stops in its gearbox to […]

Optically controlled servo motor

Dilshan Jayakody  writes: This is demonstration project to control servo motor movement using physical marker and normal video camera. In this project video camera capture the movements of marker and calculate rotation angle based on that. This calculated rotation angle is feed to the servo through small MCU based interfacing unit. In this project video […]

Resistor cutting robot from .:Oomlout:.

On our Shenzhen trip we were joined by the Oomlout team. While discussing a reel-to-strip cutting robot, Aaron mentioned that he has a resistor cutting robot. It’s built from laser cut MDF and acrylic, with a bunch of servos attached to load and cut the resistor tape. The project is open source, so all the […]

Tutorial on modifying servos for continuous operation

How to modify standard servos for continuous operation. This hack involves opening up the servo, removing the limit mechanics, and modifying the feedback pot. In his second tutorial Andrey shows how to add a rotatory encoder to the servo, for position feedback. It will stand still with control pulse of around 1,5ms (mine likes 1515us; […]

Low-tech Arduino based cell phone trigger

William Finucane of revoltlab.com posted this article describing a simple low-cost means of activating devices remotely via telephone. I wanted to be able to call my house and turn on the lights and television during nights when I was away on vacation. What’s more, I didn’t want to spend any money on cell phone bills […]

Using servos with PIC16F microcontrollers

Raj wrote a tutorial on how-to implement servo control on PIC16F microcontrollers. The article starts off with some servo theory, and is followed with an open source practical example. A servo motor is a special geared DC motor equipped with an electronic circuit for controlling the direction of rotation, as well as the position, of […]

Bus Pirate firmware v5.5

Bus Pirate firmware v5.5 is ready to download. This version has a few new features and a couple bug fixes. New servo controller (‘S’), thanks Randy New SPI binary bulk read/write should speed up Flashrom Updated commands to support piratePICprog Some bug fixes, as usual Read about the firmware update process for the ds30 Loader […]