afarber

Good evening! In WeDo 2.0 set there is only 1 motor, which can be remotely switched on and off by using the iPad app (by writing a Scratch program). Also motor rotating direction can be toggled remotely. As an inexperienced LEGO builder I wonder if it is possible to build a remote-controlled vehicle out of 280 WeDo 2.0 pieces, which would be steered by changing the motor rotation direction. http://i.stack.imgur.com/jrF3t.jpg Initially I was thinking of using a caster wheel, which would roll straight when vehicle drives forwards. And it would snap to a certain angle, when motor rotates in the other direction. But then I have got a nice advice to use a ratchet instead. Unfortunately, it doesn't work well. There is too much friction - on the axles of all 3 wheels and on the rubber band: I wonder if experienced LEGO builders can propose a better vehicle out of WeDo 2.0 parts than mine: http://i.stack.imgur.com/h7KYk.jpg http://i.stack.imgur.com/ePo6o.jpg http://i.stack.imgur.com/kRJKS.jpg And I feel that my Scratch program for iPad can be improved too, since it is not very responsive to user input (when touching the 4 green arrows): http://i.stack.imgur.com/ecz1W.jpg Thank you for any suggestions Alex