Category Archives: robotics

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

in robotics by DP | 3 comments

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 … Read more

Posted in robotics | Tagged , , | 3 Comments

Beer Pong robot

in robotics by DP | 0 comments

Here’s a cool VERSABALL Beer Pong robot by Empire Robotics: The core principle behind VERSABALL is the jamming phase transition of granular materials. The green ball is filled with a sand like material. When air is pumped into the ball, the … Read more

Posted in robotics | Tagged | Leave a comment

OpenSprinkler Firmware 2.1.0 released

Ray Wang from RaysHobby announces the release of OpenSprinkler Firmware 2.1.0. OpenSprinkler is an open-source, Arduino-based, web-connected sprinkler controller. This new firmware is a major upgrade that introduces a number of new features, including automatic weather-based watering adjustment (using real-time … Read more

Mini line tracer

in DIY, robotics by DP | 0 comments

Pinomelean wrote this instructable detailing the build of his analog line tracer robot driven by a dual op-amp chip: It’s a simple line tracer, controlled by two op-amps. No microcontroller, no programming… simple analog circuitry. I tried to make it as … Read more