Up and running!
by Jason on Apr.28, 2009, under General, Hardware
The robot is now running with basic obstacle avoidance. It is being controlled entirely from the on-board microcontroller.
4N25 Optoisolator datasheet
by Jason on Apr.16, 2009, under Hardware, Sensors
Ordered 5 x 4N25 from ebay (45p each + postage)
Using shunts to measure current
by Jason on Apr.16, 2009, under Hardware, Sensors
An optoisolated shunt seems the way to go:
Transistor/Optoisolator voltage sensing
by Jason on Apr.16, 2009, under Hardware, Sensors
A better method than using a voltage divider, but not as simple.
AVR ATmega168 –> ATmega328 :)
by Simon on Apr.15, 2009, under Hardware, Microcontroller
We’re moving to the new (and backward compatible) ATmega368 microcontroller. It has double the RAM and EPROM, enabling a program size of 30k as apposed to 14k.
Protected: SHT10
by Jason on Apr.13, 2009, under Sketches
Protected: RobotControl
by Jason on Apr.13, 2009, under Sketches
Protected: MotorControl
by Jason on Apr.13, 2009, under Sketches
Protected: Environmental
by Jason on Apr.13, 2009, under Sketches
Protected: Accelerometer Sketch
by Simon on Apr.13, 2009, under Sketches
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