Difference between revisions of "Zappy Module"
From Hackstrich
(Adding collar output waveforms) |
(Notes on waveforms and tweaking gallery view.) |
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== Waveforms == | == Waveforms == | ||
| − | All collar output waveforms are through a 1/3 divider, so multiply by 3 to get actual amplitude | + | * All collar output waveforms are through a 1/3 divider, so multiply by 3 to get actual amplitude |
| − | <gallery> | + | * Lowest level (1L) seems to be ~90Vpp, highest seems to be ~450Vpp |
| + | ** I thought the highest was ~2x that? Need to measure the higher ones again to double check | ||
| + | <gallery widths=160px> | ||
Image:zappymod-collar-1l.png|Collar Output - Level 1L | Image:zappymod-collar-1l.png|Collar Output - Level 1L | ||
Image:zappymod-collar-2l.png|Collar Output - Level 2L | Image:zappymod-collar-2l.png|Collar Output - Level 2L | ||
Revision as of 04:40, 3 February 2015
Zappy Module is a board-level module that takes control input via some kind of protocol and outputs signals to zap someone like shock collars do.
Project Status
- 2015-02-02: Started putting together overall circuit idea.
- 2015-02-01: SPICEd out some ideas.
- 2015-01-29: Captured waveforms of all output levels.
- 2015-01-05: Arranged to borrow a shock collar to characterize the output of it.
- 2013-05: Started throwing ideas around.
Overview
- Control input options could be:
- GPIO-based, simple "zap now" input (or a couple separate inputs that you can set with different options)
- I2C/SPI/RS232
- Could be used for instant control or programming levels/durations for later GPIO-based activation
Theory of Operation
- Input voltage from 3-9V is stepped up to 10V using a boost converter (AZ34063U) to get the intermediary voltage rail
- Or if 12V input is required, maybe use 14V or something as the intermediary voltage rail?
- MCU controls a FET that charges a cap from that rail via a series resistor to control charge rate
- Divider on the cap feeds into an analog pin on the MCU, once the analog pin reaches the desired level the MCU shuts the FET off again
- Once cap is charged, MCU pulses a FET that dumps the charge on the cap through a 1:100 (or so) transformer and to the output
- 0.1-1kV should be achievable via timing the charge FET
- May need a dump resistor if the cap is charged and needs to be discharged without zapping?
- Could use the series charging resistor w/ a different FET to dump the cap through it?
Waveforms
- All collar output waveforms are through a 1/3 divider, so multiply by 3 to get actual amplitude
- Lowest level (1L) seems to be ~90Vpp, highest seems to be ~450Vpp
- I thought the highest was ~2x that? Need to measure the higher ones again to double check
Collar Output - Level 1L
Collar Output - Level 2L
Collar Output - Level 3L
Collar Output - Level 4L
Collar Output - Level 5L
Collar Output - Level 6L
Collar Output - Level 8L
Collar Output - Level 1H
Collar Output - Level 2H
Collar Output - Level 3H
Collar Output - Level 4H
Collar Output - Level 5H
Collar Output - Level 6H
Collar Output - Level 7H
Collar Output - Level 8H
