Sometimes, there are robots that are good as they are. It's not worth even to try to do my own spin of them. But because I like them so much I would like to have them/build them. So, I dedicate this blog post for reporting my assemblies of robot copies of other people famous robots in which I've just followed the instructions.
ALF - Analog Line Follower: https://www.robotshop.com/letsmakerobots/node/33449
The Wigglebot Bug: https://www.robotshop.com/letsmakerobots/node/33120
https://www.youtube.com/watch?v=BpVm5EulE1M?version=3
good job!!!