GS-1

built by Gerhard Schwanz

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Target Environment Locomotion Method
Indoors 2 Wheels
Sensors / Input Devices Actuators / Output Devices
Ultrasonic range finders
IR proximity detectors
LDRs for light sensing
micro-switch bumpers
battery voltage monitor
LED to indicate program load
DC Motor speed controller
Control Method Power Source
Autonomous Battery
CPU Type Operating System
BASIC Stamp None
Programming Lanuage Weight
BASIC N/A
Time to build Cost to build
60 hours over a 5 week period N/A
URL for more information
N/A
Comments
GS-1 is my first robot, an experimental platform. Next things to come are Ultrasonic Sensor, IR Sensors. I have built most things the way that I can easily exchange them. I used same sizes for circuits, plugs for connections etc. It pays! I am planning a new robot (GS-2) with an arm in front to grab objects and move them around. For this one to get operative I think I will have to experiment a lot with obstacle recognition by IR and US... I bumped into the robot business while visiting a privately organized robot contest in Niederhöchstadt (next to Frankfurt), Germany. I was so fascinated that I at once decided to build "such a thing". Information about this contest can be found at http://www.roboterwelt.de. Functions implemented so far: - Line tracing with crossings and backtracking at dead ends (4 LDRs beneath the chassis) - Search for light and go there (2 LDRs on top of vehicle) - Hear for whistle an i.e. stop (circuit with NE567) - Avoid obstacles by bumpers (micro switches) - Check for battery voltage (OpAmp as a comperator) - Program control onboard with LED and key (I don't have to load a different program for every function!) The size of the chassis is 20cm x 20cm. The wheels extend the chassis. The robot is driven by two dc motors whose speed can be regulated. The control is done by a Basic Stamp II. Power supply is given by 6 AA Cells NiCd 750mAh which will operate the robot for approximately one hour. All parts were purchased at an electronic shop or a hardware dealer. I have run into problems with US ranging. Still working on it. Transmitter circuit seems to beam directly into receiver. It took me maybe 60 hours in 5 weeks to build the robot. Luckily noone (especially me) really knows the costs! If you have any questions feel free to contact me by e-mail: gschwanz@yahoo.de

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