Attractnid is a four legged robot which can scale metal surfaces. It relies on magnets to attach itself to surfaces and looks like a spider (despite only having four legs).
The robot uses feet with permanent magnetics to attach to surfaces. Servos on the top of the feet rotate a permanent magnet to cancel the magnetic fields to detach the leg, allowing another set of servos to rotate the legs.
An accelerometer keeps track of the orientation of the robot, allowing the robot to move along any specified angle.
Our mechanical system consists of magnetic switches and sliding legs controlled by servos.
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Our electrical system consists of an Arduino Mega, an accelerometer, and a bluetooth chip, and is powered by a battery.
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Our software system is written in C++, and uses a control robot to walk the robot along a desired heading.
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| Item | Quantity | Total Cost | Notes |
|---|---|---|---|
| 10mm Square Permanent Magnets | 30 | 23.97 | |
| Arduino Mega | 1 | 28 | |
| Accelerometer | 1 | 15 | |
| Linear Rails | 8 | 25 | You Do It Electronics |
| Servos | 1 | 11 | Initial replacement servos |
| Rubber Feet | 24 | 15 | Harveys Hardware |
| High Torque Servos | 8 | 40 | Final servos |
| Steel Stock | 2 | 14.70 | |
| Batteries | 2 | 27 | |
| Buck Converter | 1 | 12 | |
| ProtoShield | 1 | 7 | |
| Bluetooth Module | 1 | 12 | Borrowed |
| PLA | 1 KG | 15 | Shop provided |
| Constant Force Springs | 6 | 18 | |
| Sprints, Bolts, Other Hardware | - | 35 | Harveys Hardware |
Total: $271.67
Maeve Stites
they/them
Jonathan Montague
he/him
Emma Mack
she/her
Jeremy Skoler
he/him
