SKU E2K-JIN-DP-TM-0350
A wooden dog that stands on four linkage legs and waits. Clap, and the sound sensor in its head starts the motor, so the crank discs turn and the legs begin to walk. It runs for a while, stops on its own, and waits for the next clap.
All of it sits in the chain between a clap and a leg swinging forward.
A sound becomes a signal, the signal drives the motor, the legs walk.
The motor's gear set trades speed for turning force.
One turning shaft becomes four legs, swinging in turn.
Signal, motor or a binding leg: find which one stops it walking.
Finished size, materials and part counts for the build.
CHOKING HAZARD: Small Parts. Not for children under 3 years.
Certified with CE, CPC, EN71. Full printed warnings are supplied in the manual.
You'll need to supply: 2 × AA batteries, which are not in the box, and a small screwdriver. That is the whole tool list the manual gives, and there is no glue, no flame and no scissors anywhere in this build. One thing it does not cover: Step 3 asks you to strip about 1.5 cm of insulation from the red and black wires before screwing them into the motor, without saying what to use for it, so plan to have an adult do that part. The manual also asks that the whole build be done with a teacher or an adult alongside.
Build the model, set it loose, and understand the science by watching it work.
Twenty-four steps, four screw types, and boards labeled left, right and center rather than numbered. The wiring comes first, so you can test the module before anything else goes together.
Fit two AA cells, set it down on a hard floor and clap. The indicator lights, the motor starts, and the legs begin to swing.
Clap from the next chair, then from across the room, then quietly. Work out how loud a sound has to be, and from how far, before it starts.
Work your way up. Each completed kit unlocks the know-how for your next challenge.
Essential information for classroom integration and school purchasing.
Verified reviews will appear on this page as soon as the first Mechanical Dogs are built at home and in classrooms. We don't carry ratings over from other kits in the range, and we don't publish anything that isn't from a verified buyer.
If you've built this one with your class, we'd like to hear how it went — what worked, what didn't, and what you'd change.
Essential information for classroom integration and school purchasing.
In English, with a wiring diagram and a printed ruler
A sound sensor and a delay module, both in the head
Educational pricing through PC University
Two AA cells are needed and are not in the box
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