IR
since you used ir sensors and recorded the video digitally you see the Ir light (purple color) Kool huh?
yeah its cool 
hey yeah its cool enough this robot took 3rd place at a competition 
for better turns and better line sensing I would advise you to use 4 sensors instead of too
anyway do you have a video?
anyway do you have a video?
Competition
Was it versing robots with microcontrolers or not. If so that’s very impressive!
hooking up the 4 sensors.
could you provide a circuit Diagram/schematic using the 4 sensors?
just add two new qrd… the
just add two new qrd… the emitter hook up as i is here… the sensor should be hooked to a two new transistors… just the two transistor from the left should be hooked like base -> emitter on from another an the right one too… I’ll do a simple schematic later…
The diagram
I think A simple shcematic diagram would help alot. THANKS
only thing as I said…
only thing as I said… replace LED/LDR with QRD1114
a more complex robot could be made with KA339 or similar this is a quadruple comparator a double comparator could do the trick
Thanks
Thanks alot! I really appreciate this. thanks for your time.
sure hope you will make
sure hope you will make something as cool as mine you need a low powered gear motor anyway and slow RPM
Regarding Schematics
Regarding you 4 sensor schematics, did you create a robot with 4 sensors? I don’t see how wiring the transistors like that would work. The voltage would always be the same. wouldn’t it?
and what is the sensor alignment is it example A or Example B?
Example A
Example B
example A… yes this is
example A… yes this is like a simple 2 sensor based project but this like for example on the left if a sensor goes on black it slows the motor down… I transistor open, one close… current not flowing… if the curve is hard angled the second sensor will catch it again if the first interior sensor goes over… do you understand now the principle? on a simple black line both sensor are on white… transistor open…
I see
I understand the principle now. shouldn’t have doughted you. thanks for your time and help.
The only upgrade was to insert a line following toggle switch to follow dark and light lines.
go on I really want to
go on I really want to see your design… there was a problem at dark light line didn’t know how to make it
**I will create a blog **
I will create a blog on how to create this line following switch. The nice part is that you can test the line follower with out having to engage the motor. I’ll start working on the post then I will put a link as a comment on this page.
Line Following Toggle Switch
Since you helped I shall help you. Here are the directions to the simple line following switch to make the robot follow dark and light lines. Hope this helps
request not found… but…
request not found… but… aplying a resistance to base will make it work no problem
Was that comment aimed at me?
If the comment was aimed at me, I don’t get it. The line following switch will work.
the link is not working 
the link is not working that was what i mean