This is the third version of Attiny canbot made from Wingman94. It´s a bit bigger than the 2.0 version and now it has a structure inside to put the electronic neatly. The electronic I used were:

• 1 arduino nano
• 1 arduino nano shield
• 2 continuous rotation servos
• 1 ultrasonic sensor ( HC-SR04)
• 1 Lipo battery
• 1 bluetooth module ( HC05)
• 1 switch to turn on/off the robot

I designed the bottom to put almost any size of battery you want. In my case I used a 3-cell Lipo battery (1500mah) but you can used 2 Li-ion batteries instead. This version can be used at least 1.5 hours without any problem but I recommend you to test the batteries to be sure.

This is not the final version because i would like to improve some issues I found such as an easy way to remove the battery without disarming other parts, but I´m happy with this design so I decided to upload it.

Here is the app and the code I programmed : https://drive.google.com/drive/folders/1mFg8eSQ_HOScRWcDKtQFQpIZzGcdxy7i?usp=sharing

If you have any question, improvement or want to redesign something just tell me on the comments to know it. Hope you enjoy it!!

https://youtu.be/QrWCSzD5Vdo