motor

How To: DIY quadrature encoder

How To: DIY quadrature encoder

This might be just the thing for a robotics project cancelled on account of – “expensive”. Professor Mason created a quadrature encoder by fitting a motor with 2 inexpensive hall-effect sensors and a small magnet – In this application, two sensors are attached 90 degrees out of phase around the motor. A small permanent magnet […]

Hacking the GM3 gearmotor

Hacking the GM3 gearmotor

On the RepRap site, they have a short piece on hacking the Solarbotics GM3 gearmotors. The GM3’s are the standard motor used in the RepRap extruder. The piece covers locking the internal clutch to get more torque, lubricating the gears, and an easier mounting solution. These tweaks can obviously be useful in other motor applications. […]

Servo meter, anyone?

Todbot makes an interesting suggestion Analog meters are hard to use in hardened environments. If you’re showing data from digital sources, why not use a digitally-controlled analog meter? laser cut acrylic meter face & needle, tiny 25mmx12mm $3 servo, and arduino. – Servos as meters on Flickr MotorShield for Arduino Kit