![]() We’ve tried coding Lego WeDo 2.0 with both Scratch and the Lego WeDo app, and had lots of success with both platforms. The structured classes with Bricks 4 Kidz have given him a great foundation, and his creativity has taken him the rest of the way. Over the last 6 months, Liam has learned a huge amount about gears, coding and design. With a bit of practice, he started creating his own. Liam took inspiration from Yoshihito Isogawa, Mi 2 Tom, and other creators he found on YouTube. As a result, we haven’t done many of the tutorials in the Lego WeDo app, but skipped straight to the ambitious stuff. Liam’s not particularly strong at following instructions, and always wants to skip ahead. We started by getting just the smarthub, motor and sensors individually, and using them with our existing Lego at home. He loved his classes, but wanted to do more work with WeDo outside of class. Every week Liam built a new project, often an animal or a vehicle. Until he started there, we hadn’t even heard of this kit. Liam is in the second level of classes, where they use Lego WeDo 2.0. That has been such a great piece of luck! The weekend classes are tiny, so he gets to work one-on-one with a teacher and push the limits of the project. So we found out that they were also running classes at the local library on Saturday mornings. It booked out within a few hours, and Liam was really sad about missing out. Bricks 4 Kidz began running some after school classes at his school in mid-2021. He has loved Lego for years, and been getting really interested in building and coding his other robots. This is a cheap way to introduce some more randomness into the system.Įven more finally, you might want to get your hands on some LEGO Ball Casters, which I didn't know existed until this very moment.Liam has been using Lego WeDo 2.0 for around 6 months. Start with a skid first, and an easy, smooth surface to see if you get the basic behaviour you want.įinally, you may get more interesting behaviour by ramping or stuttering motor direction and speed a little on obstacle sense. (As in, it isn't an intractable problem, but the problem domain is extremely sensitive to small changes.) I now have reasonable respect for those people who design the casters into the everyday things we use without considering how difficult these trade-offs can be. It's an interesting engineering trade-off, and I've never been able to make a perfect caster, even with lots of Technics parts. And the surface area of the wheel and the mass of the load drive the how easy and fast things swivel. See the Wikipedia article on casters, but there is a strong relationship between wheel diameter and how high the caster should be. You can get more interesting behaviour by having a bumpbot, that simply reverses the motor when it detects an obstacle. If you have limited gears, then drive one wheel, have an idler wheel and a caster or simple skid arrangement. If you can build a differential, then drive two wheels with the motor. One motor and a caster wheel will give you two degrees of movement but will not be steerable. Here a good WeDo 2.0 model with steering: UPDATE 2: Got a nice suggestion at Eurobricks forum: ![]() I wonder if experienced LEGO builders can propose a better vehicle out of WeDo 2.0 parts than mine:Īnd I feel that my Scratch program can be improved too, since it is not very responsive to user input (when touching the 4 green arrows): There is too much friction - on the axles of all 3 wheels and on the rubber band. ![]() I have followed Aaganrmu's suggestion (thank you) and have tried to build a simple vehicle using ratchet instead of caster wheel: The caster wheel would roll straight, when the vehicle drives forwards.īut when driving backwards, it would snap to a certain angle.įound a picture for such a caster wheel in the LEGO Technic Idea Book by Mr. I am thinking of having 2 wheels with wide tires in front the vehicle, connected to the motor.Īnd having a single caster wheel with narrow tire at the back of the vehicle, not connected to the motor. 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).Īlso motor rotating direction can be toggled remotely.Īs 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.
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