Not sure where this info should go, but thought it should be available to any who were interested:
This is a description of the Matty encoded pulse trains coming out of one of the two contacts (relative to the third pin that is ground) on the Matty wand 3.5mm stereo jack. Haven't figured out the purpose of the other contact...
All of the pulse trains start with a single long positive going pulse about 14.1mS (+/- 0.1mS) long followed by a variable number of short pulses. Each short pulse has a Low time of 75 to 95uS and a High time of 90 to 110uS.
There is at least 12mS of no pulses (low value) between pulse trains, so you should never see two 14mS pulses very close together (at least 12mS of gap between them).
Here are the wand actions and resulting pulse trains described as "Action" ---> # short Pulses
- Power On ---> 6
Generator On ---> 4
Generator Off ---> 5
Fire On (low intensity) ---> 0 (no short pulses just the long one)
Fire On (high intensity) ---> 1
Fire Off ---> 3
Crossing Streams (start) --> 2
Crossing Streams (off) --> 0 or 1, basically indicates a Fire On of whatever intensity setting you have selected
Changing intensity with the Stream Dial while firing generates a Fire On pulse train of the new intensity setting. No Fire Off pulse train is generated.
Actions that do not generate pulse trains:
- Proton Indicator On or Off
Barrel Extension/retraction
Auto power down (goes into low power mode)
Power Off, but then how could it? You removed power completely form the wand!
Using the median values of times, at the start of Crossing Streams, the pulse train on the receiving Wand looks like this (the other wand doesn't know it is causing a stream crossing):
- Time 0ms, rising edge
Time 14,100uS, falling edge (14.1 mS incoming long pulse)
Time 14,185uS, rising edge
Time 14,285uS, falling edge (1rst short pulse)
Time 14,370uS, rising edge
Time 14,470uS, falling edge (2nd short pulse)
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- By mrmichaelt
- By towntomatoe
- By LeoCor Replicas