built by Markus Hirsch

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Target Environment Locomotion Method
Indoors 2 Wheels
Sensors / Input Devices Actuators / Output Devices
3 IR Object detectors
2 IR ground detectors
Line tracker
3 light sensors
IR receiver (remote control)
2 Micro gear motors
dual color LED
Control Method Power Source
Autonomous Battery
CPU Type Operating System
AT90LS8535 None
Programming Lanuage Weight
Assembly 320 grams
Time to build Cost to build
about one week about 50 euros
URL for more information
Gizmo 1 was actually just an experiment to find out if it was possible for me to build a robot. I built it into a plastic zylinder where CDR's are sold in. It is either controled by IR romote control or can act autonomous. The different programms and options can be set by IR remote control. It can search for light and drive around objekts standing in the way to the light source. Or it can just drive silly around the place avoiding objects and with different algorithms. The main function is following lines. There are several options like what it should do when the line suddenly stops (turn around or go on searching) or what should happen if an object is in the way (stop and wait untill it is gone or turn around or drive around and look for the line behind the object). The ground sensor keeps it from falling of my table. The IR sensors I used are 5 TSOP1738 with LD274 IR LED's. They Provide a digital signal. The Line Tracking Sensor is made of 5 Photo transistors with 5 IR LED's and provide 5 Analog signals. The main weeknesses of GIZMO 1 are:
Battery doesn't last long which results in stupid behaivior when the voltage drops because I didn't privide a voltage supervisor. The wheels are fixed very unstable. It has a fixed programm. GIZMO 2 will have an own Robot Assembler.

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