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Description: This is the Multi-Chassis Tank Kit, an easy to assemble and use robot chassis platform. The Multi-Chassis kit provides you with everything you need to give your robot a rugged tank tread platform with plenty of room for expansion to add various sensors and controllers. All you need to do is supply is a basic motor driver and power and you'll be ready to drive!

This Multi-Chassis Tank Kit includes two 48:1 DC gearboxes with a metal final output gear and shaft that independently drive each 52mm tank treads making this chassis able to drive around tough terrain like tall grass and sand. Each side of the 2.5mm thick aluminum frame comes cut with plenty of attachment points to add a multitude of different robot controllers, drivers, and sensors. A standard size servo can be mounted inside the chassis and be used for robotic arms or sensor arrays.

Note: A building instruction booklet with a complete list of items included is inside this kit and in the documents section below. This comes as a kit but includes all the hardware and tools necessary for assembly.

Dimensions:

  • Completed Kit Size - 157L x 149W x 60H mm
  • Wheel Diameter - 52 mm

Kit Includes:

  • 1x Aluminum Frame
  • 2x 48:1 DC Gearbox
  • 4x Track Wheel Hub
  • 2x Tank Tread
  • 4x M3 25mm Standoff
  • 14x M3 8mm Screw
  • 2x M3 30mm Screw
  • 2x M3 16mm Screw
  • 2x M2.5 20mm Screw
  • 2x M2.5 25mm Screw
  • 2x M3 10mm Screw Collar
  • 2x M3 20mm Screw Collar
  • 2x M3 Nut
  • 4x M2.5 Nut
  • 2x M3 Nut
  • 1x 5 AA Battery Holder
  • 1x Spanner
  • 1x Screw Driver

Documents:

Comments 26 comments

  • I am very impressed with most of the chassis. Dagu has done a nice job. The aluminum is nicely punched and folded. There are abundant slots and holes for mounting just about anything. I was surprised and impressed with the bearings that the wheels run in. They make a big difference in how smoothly everything goes together. Assembly is mostly easy and straightforward. Tread quality is good. Everything seems like it would stand up really well to falls, even from 4' high workbenches.

    I just have a few gripes: No mounting holes in a pattern for Arduino? I can mount 42 servo motors, but no controller? C'mon! No mounting holes for the included battery pack? This is inexcusable! The bent up prongs in the chassis interior make it really hard to fit the pack next to the motors even if you drill new holes to mount it. Getting the wheels mounted on the output shaft was a trick. I had to stack the included washers and use screws to pull the wheel onto the shaft. Trimming a little of the plastic where the motor output shaft enters helped. Lack of power is disheartening. I’m going to look into higher power motors, but these stall trying to drive over a pencil. I don’t know what trickery was involved with the stair climbing in the Product Video. Has paint that chips, anodizing would be nice.

    • I agree with this except for stalling while driving over a pencil. I have no idea how this happened, mine works really well. After I perform further testing I will post some measurements.

    • “stall trying to drive over a pencil” - you must be doing something wrong, this thing should have no problems going over a pencil. You axles sound way too tight, or you are not controlling the motors the right way and supplying them with proper power. What kind of motor controller are you using?

  • This chassis is really good. I’m using it with the serial controlled motor driver and it works great. Also, I have no idea how this managed to stall driving over a pencil. Mine seems very powerful running at 9 volts.

  • when is going to be really available? i’ve been waiting for more than a month..

  • I am completely new to Arduino. I want to use this for an r/c project. Can someone direct me to a tutorial for using this with an r/c radio system?

  • Would someone check this math?: Motor Speed = 65rpm No Load. So lets estimate 60rpm with some light load. Wheel diameter = 52mm. Lets say 54 with the tread added. (so radius = 27mm)

    So using the formula for tangential velocity given the period (1s), and radius, I find the speed of the chassis would be about 0.170m/s or 0.380mi/h.

    • I’d estimate that 60rpm is fairly accurate for the load of just the tread. Using the Ardumoto and 5 fresh alkaline batteries I got about that speed at 100% PWM. The problem is the stall. This poor thing stalls at about 10-15 degrees of incline at 100% PWM. I’m a little disappointed that this great chassis is limited to flat floor crawling.

  • Will the the Motor Driver 1A Dual TB6612FNG work for this platform?

    • Thats a good question, we dont know its stall current rating. Datasheet says max no load current is 170mA.

      Can you guys stall a motor out at 7.5v (same as five AA batteries) for us and see what its max current is? B-)

  • Is there documentation or example code on how to control this with a Raspberry Pi (preferably) or Arduino?

  • In the documents section you provide a datasheet for the RS030 encoder. There is no mention of them being included in the kit nor do they appear to be available from Sparkfun. Are they included?


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