Digital Knob for Arduino I2C – Absolute Encoder

What is it?

From the datasheet

“Until now, the choice of an absolute encoder meant an expensive, and larger sized product. Through the use of combinatorial mathematics, the absolute code pattern of the Bourns® Absolute Contacting Encoder (ACE™) is placed on a single track for a very economical, energy efficient and compact product. Bourns® […]

SonarI2C – multiple HC-SR04 sensors on Arduino I2C

HC-SR04 octopus

HC-SR04 octopus on I2C plus one pin

I recently had my first encounter with ultrasonic distance sensors – specifically the Parallax Ping))) – while helping the Cresta Blanca Girl Scouts robotics club prep for the local RoboGames Fire Fighting challenge. This got me all interested in doing robot things again so I’ve dusted off […]

Raspberry Pi Arduino IDE via GPIO

Raspberry Pi GPIO to Arduino UNO without USB

We want to control and program our Seeed Robot directly from a Raspberry Pi. The Seeed Hercules controller, which has an embedded Arduino compatible controller, does not have a built-in USB port. Therefore we want to bypass USB and talk serial TTL directly between the pins. […]

Absolute 128 Position Encoder for Arduino

I’ve started work on motorizing the Dalek dome and came across this nifty rotary encoder. Most rotary encoders are of the incremental type. They give you direction and revolution counts, and may have resolution of only a quarter turn. This one is an absolute position encoder, giving 128 unique binary values on its 8 pins. […]

Pure MDF Dalek Dome

MDF Dalek Dome

Last year we built a Dalek. His name is Fredalek, and he dressed up as Santa for Christmas.

Dalek building is surprisingly straightforward, thanks to the community at Project Dalek. Plans for all types of Daleks are on this site with accurate dimensions, compiled by properly obsessed British loonies.

The only part of Dalek building […]