Familiarization, about five minutes
Meet the six signals.
Each signal is played and named in words, one card at a time, and any card replays on request. Then a short self check: the quiz below, by sight, by sound, or by the phone in your hand. How quickly a real wearer learns the signals is measured at the milestones.
Learn and quiz
Learn the signals by feel.
The six signals carry the language, plus the drop off cue, which is the simulator's own working signal for a curb or a trench. Learn them one card at a time. Then take ten quiz rounds and see how well you read them by sight, by sound, or by the phone in your hand.
Outputs
Turn these on to hear and feel each signal. Sound plays here in the browser. Phone buzz works on an Android phone. M switches sound from anywhere.
The timings here are the simulator's working values, not yet in the engineering record; the record fixes the three laws and leaves rhythm and stroke timing to the bench. How strong is how close. Alongside the strength, a steady buzz quickens from a 900 ms rhythm at the edge of range to 250 ms at contact. The sweep fires four ankle motors in 120 ms bursts 80 ms apart, one stroke every 800 ms. The drop-off is two 80 ms pulses every 600 ms. When you know them, walk the block in the simulator.
Learn and quiz menu.