Tag Archives: sensors

Line follower sensor experiments

By | November 11, 2008

The simplest arrangement for a line follower is probably two sensors with digital outputs. As long as one can see the line and the other can see the background, the controller is happy otherwise it must turn left or right as appropriate. I was after something a bit more sophisticated for Bob the Line follower…

New line follower robot

By | November 11, 2008

Line followers are a perennial favourite of the small robot builder. It is not hard to make something that will bumble about and follow a line marked out on the floor. the technology can be very simple but the same basic idea is used in sophisticated robots on factory floors. The tricky part is in… Read More »

Sensor alignment

By | March 29, 2008

For consistent results, the sensors on a micromouse need to be carefully aligned and then fixed in place. In a perfect world, the emitters would all have the same radiation pattern and would generate the same amount of illumination for a given current. Well, that is never going to happen without hand-picking the devices. That… Read More »

Sensor Data Analysis

By | August 4, 2007

Micromouse sensors are subject to several sources of error and interference. Capturing a set of data samples lets you do some simple analysis of the effects of those errors.The test rig was set up with a section of wall placed at about 50mm from the sensors. This gives a large reading where noise and interference… Read More »

Sensor test

By | August 1, 2007

The simple sensor circuit described by Ng Beng Kiat seems to give the best results.On his web site (http://www.np.edu.sg/alpha/nbk/) Beng Kiat describes Min4, one of his recent mice. In there is a PDF with schematics for the mouse. The sensor circuit for Primus is essentially the same except for a couple of component value changes.… Read More »