Robotic gardener takes its cue from bomb disposal bots

bombdisposal

[Dave] posted some pictures and videos of his 'Nuntius' robot on the Propeller forums. From the pictures it's an impressive build, but to really appreciate [Dave]'s skill, check out the Youtube demo. The controller is a Propeller protoboard with bits of angle aluminum fastened together. Pots are positioned at the joints of the remote's arm so the robot's arm can mirror the shape of the remote. … [Read more...]

Digital Audio on the Parallax Propeller

propeller

[Beth] had the idea for transmitting digital audio over S/PDIF on a Propeller a few years ago, but only just got around to a writeup. For that, we thank her. The writeup has a marvelous walkthrough of the S/PDIF protocol and the problems associated with with generating the signal. S/PDIF is a relatively resource-intensive protocol - the signal is clocked at 64x the audio sample rate. That … [Read more...]

Coyote-1 guitar pedal available now

OpenStomp's Coyote-1 is now available for $349. The guitar effects pedal lets users design and upload their own effects to the device. It has two stomp switches with LEDs, an LCD display, and four user assignable knobs. The back has 1/4" in/out and one selectable 1/4". It also features NTSC composite out, a headphone jack, mini-USB for uploading, and an RJ11 I2C bus for expansion. The processor is … [Read more...]

Wii style controls for the Commodore 64

[Jeff] has been playing around with Parallax's Propeller chip. He's used it to adapt an NES controller to the to the Commodore 64. In this latest iteration though, he's added a Memsic 2125 dual axis accelerometer to the end of a whiffle ball bat and used that to provide Wii style controller input. The video above shows his son playing Street Sports Baseball with it. … [Read more...]