Eric Gregori from EMG Robotics recently linked me to a YouTube video originally posted on imxcommunity.org of a chumby One that he turned into a bipedal walker. This has got to be the most omgwtfbbq-cool robotics demo I’ve seen of the chumby One to date. Check it out. One small step toward our future robotic overlords…but hey, at least they’ll be open source. That might even be an improvement over what we have today.
Chumby Hacker Board – Beta. The Chumby Hacker Board is a cool single board Linux computer that has much of the same hardware as the famous Chumby One. It’s great for people who are experienced with Linux and want to have the power of a microcomputer with audio and video output while at the same time getting all the peripherals of a microcontroller such as analog-to-digital conversion, PWM outputs, sensors, bit twiddling, and broken-out GPIOs!
While we believe that the CHB is a fairly easy-to-use Single Board Computer, having a pre-installed OS on the included uSD card and drivers for the peripherals, it’s not designed for beginners! The board is best used by those with previous Linux experience. The good news is you don’t have to have another Linux computer to set up the CHB but you should have familiarity with shells and shell scripting, gcc, make, dmesg, etc. We also suggest having had some poking around with microcontrollers such as BASIC Stamp, Arduino, AVR, PIC, 8051, etc. So that when we say “i2c” and “not 5v tolerant I/Os” you can follow along
This is the Beta release, just for the hackers! The CHB is not in any way officially supported by Chumby Industries! Chumby has generously offered a Forum and Wiki where they will try to share information but there is absolutely no tech support or guarantee that the CHB will meet your project needs. Please do not contact Chumby directly either by email or phone for help with your CHB. If you have questions, please post to their forums to receive help from others and the occasional assistance from a CHB developer.
Whats so great about it anyhow? Well! We have a list!
- Freescale iMX.233 processor running at 454 MHZ
- 64 MB onboard RAM
- Comes with 512MB uSD card with 100 MB Linux installation all ready to go
- Dimensions are 3.9″ (100mm) x 2.4″ (60mm) x 0.75″ (20mm)
- 3.3V I/O pins can talk to most sensors, motor drivers, etc. No struggling with 1.8V levels.
- Low power, fanless design draws only (200?) mA at 5V
- Built-in Lithium Ion/Polymer battery charger and 5V boost converter for portable projects
- Three USB ports!
- 1W mono speaker amplifier (0.1″ JST onboard connector)
- Microphone input (0.05″ JST onboard connector)
- LCD controller with 2mm output port
- 3.5mm A/V output jack with stereo audio and NTSC/PAL composite video
- Back of board has GPIO outputs on 0.1″ header spacing, plug in an Arduino proto shield!
- Quadrature encoder connections onboard
- 5-way joystick on-board
- MMA7455 3-axis +-2G to +-8G accelerometer on-board
- 3.3V TTL serial port for easy shell access
- Full GCC toolchain is ready for you to download and get crackin’!
- Schematics, Gerbers and original layout files are at the Wiki
Want some more information? Check out our Getting Started with the Chumby Hacker Board tutorial page which will show you how to get booted, connected and read data from the on-board triple-axis accelerometer in an evening. Wow!