This is easy Beam robot,i use 1381 circuit and i replaced the motor with the buzzer.
COMPONENT:
- PN3904 transistor
- PN3906 transistor
- 2,2k resistor
- 1381 trigger
- 0.1uf capacitor
- buzzer
- 3v solar cell
- Actuators / output devices: Buzzer
- Power source: 3v Solar cell
- Target environment: outdoor
This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/soundy