My Pixy arrived in the mail!

Well, can't wait to play with my just-delivered Pixy cam! Meanwhile I hope to finish OpenMV Camera assembly soon so I can demo at Robotics At The Hangar here in Denver on April 13.

Clock for my Mom, Complete.

Mom's clock is complete. She has trouble remembering the day of the week and has impaired vision, so after a fruitless search for an affordable solution I made my own. Here's how.

Powerful ATtiny841 has a breakout board

ATtiny841 pinout

The ATtiny841 [datasheet.pdf] is the latest Tiny and it kicks butt. While the '841 shares pinout and memory sizes with the ATtiny84, the new chip boasts some truly incredible features:

• One 8-bit and Two 16-bit Timer/Counters with Two PWM Channels, EachProgrammable Ultra Low Power Watchdog Timer
• 10-bit Analog to Digital Converter
• 12 External and 5 Internal, Single-ended Input Channels
• 46 Differential ADC Channel Pairs with Programmable Gain (1x / 20x / 100x)
• Two On-chip Analog Comparators
• Two Full Duplex USARTs with Start Frame Detection
• Master/Slave SPI Serial Interface
• Slave I2C Serial Interface

The 14-pin AVR comes in surface mount packages, only. However, I'm selling a breakout board with AVRISP header, reset circuit, and built-in 16MHz crystal and caps. Buy it here for $10.

eeZeeTiny841 Breakout Board

I've written some really simple LED blinky demos here.