Sets the specified motor's speed to 100% in the reverse direction. Only 1 motor can be specified at a time. The Handyboard supports motor numbers 1 to 4.

Syntax

1. bk('Motor Number');

Example

1. //Move Motors 1 & 2 in Reverse for 5 Seconds
2. void main()
3. {
1. bk(1);
2. bl(2);
3. sleep(5.0);
4. ao();
4. }