Let's Make Robots!

line sensor

Moving in a contained area, avoiding obstacles, checking battery power, find a line, find a cliff
Using a
It's been a while since I submitted a robot. Now here he goes, the Desktop Companion Bot or short DCB.  Prolog: The idea came by thinking about a new swarm robot. … Read more

LDR vs Ir Phototransistor

Hi  Everyone

I'm doing research for my first bot from scratch. I was hoping someone could point me to a good source of info on the advatages/disavantages of using LED & LDR vs Ir with Phototransistor for proximity sensors.

My basic goal for them is to have an edge detector in each corner and a line following array. I thought the LDRs would a simple and cheap approach but was surprised to see how cheap this Ir LED & Phototrasistor set was.

Line follower, sumo and finger follower behaviours selected via a mode button.
Using a
R/C robots are fine but I like autonomous robots best. For this March Break I wanted to host a "Build You Own Robot" party for my son and his two friends. I've … Read more

Peg placing robot

Hello, everybody......


i really need your guidance. i m making a robot which have to performs two task: line following + box placing..

it must be heavy in weight, because of its body and robotic arm (for picking a box, sense its color and then place it in a chamber of same color )


my first task is to select motors .....i search motors a lot but cant find best....my robot weight lie in this range 10 kg- 14kg

Howto interface QRD1114 line sensor
Hi, everyone! Few days ago one of our new members asked for help with QRD1114. I decided to answer in form of walkthrough, so others can benefit from it as … Read more

Labyrinth Line Follower Advice Please

I wish to build an autonomous robot capable of navigating a human sized labyrinth at our local senior center.  I need to make it mostly from VEX parts programmed in RobotC.

Line sensor ready!

I have finished soldering the line sensor for my line follower for DTU Robocup. I really hope it works since I haven't tested anything during assembly :-D.

Check the awesome soldering, lol!