This tracked chassis from Dagu Electronics makes a great base for building a small tank-like RC vehicle or autonomous robot. The chassis includes a battery holder and two DC motors, with an independent drive train and a quadrature encoder for each tread, so all you need to add to make a complete robot is a robot controller and the sensors of your choosing.
The chassis features a rugged gray plastic body with room to house the included battery holder and some additional electronics. The two dc motors with 86.8:1 gearboxes are strong enough to lift the weight of the chassis and allow it to achieve speeds as high as 10 in/s (25 cm/s). The quadrature encoders provide a resolution of 1000 counts per three revolutions of the wheel, or 333.33 CPR (counting both rising and falling edges of both encoder channels).
A unique feature of this chassis is the ability to adjust its height, and therefore the clearance under its body, by changing the angles at which the gearbox assemblies are mounted on the body. Interlocking teeth on the body and the gearboxes hold them in place and allow you to make adjustments in 5° increments by unscrewing a metal bracket inside the chassis, removing a gearbox, and reinserting it at a different angle. The elastic rubber tracks maintain sufficient tension with several different gearbox angles, allowing the chassis height to vary by nearly 1.5" (3.8 cm).
- Two 333 CPR quadrature encoders give you position feedback for each track
- Durable plastic body helps protect your internal electronics
- 6-AA battery holder fits inside the chassis to free up room for your sensors and add-ons
- Height and clearance can be varied by adjusting the gearbox angles
- Ability to scale inclines limited only by the friction of the surface
- Weight: 1.6 lb (0.72 kg)
- Dimensions: 9.5" x 9" x 3" (24.5 x 22.5 x 7.5 cm) in default configuration
- Motor rated voltage: 7.2V
- Motor stall current: 2.5A