Bulldozer toy

My 4 year old nephew said he wanted me to make him a bulldozer.  Had to make a second one to keep his little sister happy.

It uses Lego wheels and tracks.

https://www.amazon.com/dp/B00YBERL4E?psc=1&ref=ppx_yo2ov_dt_b_product_details

I provide power using these battery's

https://www.amazon.com/dp/B07TWFHTSC?psc=1&ref=ppx_yo2ov_dt_b_product_details

The motors are from this kit.

https://www.amazon.com/Electric-Plastic-Multicolored-Support-Controller/dp/B07T5SVCSX/ref=sr_1_32?crid=2VQV1TG6WN2NI&keywords=dc+electric+motors&qid=1668896096&sprefix=dc+electric+motors%2Caps%2C92&sr=8-32

or

https://www.ebay.com/itm/254375531173?hash=item3b39f692a5:g:pTUAAOSwFMRdt61N&amdata=enc%3AAQAHAAAA8KkZeqDRrdLCRB3WB23JxpLA4gfvKmdlejSBQsqwE7GrA0Z8v6%2Fog3aa9O9ee2VRgKF5yQcCXjzc9my7dyc3%2F%2BaK%2F49%2BkBlsFgRk6C5lVqohBmV0X3zIeYNnlslrHvPTMSU9aWNotnQ96FvAQu13zNyh8pqSD34xdlcf5QdfdjLDXRz0jDU6OjDIHCMDvbqYCQw%2ByzgEoYEHsUGnKkLcQ1rQRJlAOKN787VqoPHlEIQC%2Bhw0A%2B948mo6KFyDO%2Br58iXOVSQO8qMVsqHxOx3IIr04tM5gENOZUeEQnZFX8E5%2F8YukTv81y%2F%2BaIoh4xjwZ0w%3D%3D%7Ctkp%3ABk9SR-ytxp-SYQ

It uses 8ea 8x16x5 ball bearings so that the track can be kept tight and not load down the motor.

https://www.amazon.com/gp/product/B0854DZNCJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

Electronics and code can be found at https://github.com/un0038998/ESPNOW_Car