This is a remix of SMARS with modified 28BYJ-48 stepping motors and USB rechargeable battery. The 28BYJ-48 stepper motors are modified to bipolar type for faster speed and to use with the Dual H Bridge Motor drivers with a higher motor supply voltage. The output of the battery charging integrated module is adjusted to 9V for the Arduino board and motors as shown in the circuit diagram.
Space is a little bit tight, so take care for the cable and wiring. Using hot glue can be useful.
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