Construction
The construction of Lawndon is very dependent on the mower you are making these modifications to, a few factors to consider:
- Final height of the mower
- Placement of the gearboxes
- Length of tracks needed
- Placement of pulley axles
- Routing for internal components
For my example I used a 24V 14" Worx mower which did not lend much room for the gearboxes and internal components. I ended up making a wooden mount for the gearboxes that fit the mold of the mower which allowed the front axle to be placed outside the mower housing, and I cut two grooves in the back of the mower for the rear axle just behind the blade compartment.
Components list:
- 2X Gear housing (mirrored)
- 2X Motor gear
- 4X 40T gear
- 2X 40T output gear
- 2X Gearbox wraparound plate
- 2X Big track pulley
- 2X Small track pulley
- 2X Board rod holder
- 4X c-clips
- Tracks (amount dependent on length of mower, 44 per side in my example)
Once the components have all been printed and axles cut to length, assembly can begin.
Complete these steps for both gearboxes:
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Attach motor gear to brushless motor
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Attach motor to gear housing
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Prepare 40T and 40T output gears with axle and two washers
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Mount gears to housing
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Prepare 40T gear with axle and one washer
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Mount gear to housing
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Attach wraparound plate
- Connect tracks with music wire
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Prepare front chassis for mounting the gearboxes
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Prepare rear chassis for rear axle mounting
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Mount gearboxes to chassis with front axle and big track pulleys
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Secure front and rear pulleys with c-clips on axles (you can also use locking nuts if the axles have been threaded)
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Align tracks with both pulleys
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Connect tracks with music wire
The pin locations may be changed depending on circumstances, but definitions for each pin can be found in their respective header files.
- Mount ArduinoMega, Motorsheild, and motor controller - then connect the pins
- Attach the cover
