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3CH RC Servo Multiplexer for Sale 27 Aug 2013 | 11:00 am
My 3 Channel R/C (Servo) Multiplexer is now available for pre-order on Tindie for $12. [Buy] Are you building a self-driving, robot rover? What if it is heading straight for a curb? Or my ankle? With...
AVR Code Size Reduction 23 Aug 2013 | 10:00 pm
Atmel AVR035 (pdf)) has some tips on code size reduction. Here's what I learned in the real world, reducing my flash-constrained A2D code from 4k down to 1.4k, great because the onboard ATtiny44As onl...
Geek Destinations: Micro Center, DTC 15 Aug 2013 | 10:00 pm
Micro Center in the DTC is quite the maker oasis with gear from Arduino, Sparkfun, Adafruit, Parallax, Karlsson Robotics, Digispark, Velleman, Raspberry Pi, and more. This is just one wall. In this....
Robot Club Line Following 12 Aug 2013 | 09:00 pm
Congratulations to Ted who kicked all our respective butts in line following at this month's SHARC meeting. He completed the short course in only 5 seconds, less than half of most everyone. Except me...
3-State Jumper 8 Aug 2013 | 10:00 pm
Up to 27 A2D adapters can live on the same I2C bus. The address is configured with 3 jumpers, each with 3 states: soldered high, soldered low, and unsoldered. Pull-down and pull-up resistors are the k...
Building a Pseudo Theremin 6 Aug 2013 | 10:00 pm
Here's how I built a simple musical instrument with Sharp IR Rangers to demo my A2D boards. It was the night before the big robot expo at Wings Over the Rockies museum and I needed another exhibit. I...
Denver Mini Maker Faire 6 Aug 2013 | 03:39 am
Sat Aug 10, Denver Mini Maker Faire + Maker Swap. 8am-5pm at Club Workshop, 999 Vallejo St., Denver, CO 80204 If you're in/near Denver come on by. I'll have a table set up and would love to meet you!...
Oversampling, Decimation, Filtering 30 Jul 2013 | 10:00 pm
To convert Sharp IR Rangers to I2C, I now use an ATtiny44a for signal processing. The latest Sharp Ranger I2C Adapter prototypes. The new approach, guided by Atmel application note AVR121 (pdf), wor...
Still away on personal business 25 Jul 2013 | 10:00 pm
Life is still kicking me and my family down pretty hard. As things return to normal, look forward to all kinds of electronics fun: Digital oversampling and filtering with ATtiny, Logic analyzer shoo...
Rover RC Multiplexer 18 Jul 2013 | 10:00 pm
Safety switch? Takeover circuit? RC Mux? Kill switch? Whatever it's called, this circuit is how you take over control of your autonomous rover milliseconds before it crashes itself into a curb, lake, ...
