to mark as completed Mr. Random [...and on youtube]
Forget to spin the bottle or throw common dice at your next party --- Mr. Random is in the house. Driven by two hacked (continuous rotation) servos, Mr. Random wanders around on your floor. If the tactile sensor hits an obstacle, the robot reverses, stops, produces a random number from 1 to 6 on LEDs that are similar to the pips on the side of a dice and emits a strange sound.
After the die is cast, the robot turns left or right, depending on a pseudo-random number, which is generated by the random command and activated by the tactile sensor.
The LED-dice is a circuit from the ebook 50 555 CIRCUITS, modified for my needs and additional equipped with a second 555 IC, which is wired as a pulse extender and used as a driver for the beeper.
2010.06.07: Circuit diagram of Mr. Random attached.
Drives around randomly, dices if he hits an obstacle, emits strange sounds
- Actuators / output devices: beeper, 2 continues rotating servos, 7 LEDs
- Control method: autonomous
- CPU: picaxe 08M
- Power source: 4.8 V NiCd, 700 mA
- Programming language: Picaxe basic
- Sensors / input devices: tactile sensor
- Target environment: indoor