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Step 7Electrisical Stuff: Part 2 - Getting Fancy
If you are like me, and want to have the blood pulse to simulate a heartbeat, read on. Otherwise, just skip this step. I will get some pics up later on, but for now I'm going to assume that anyone willing to go further will know a little something about IC timer circuits.
Using the schematic, and solder of course, set up the timing circuit. Before adding it to the pump, have the circuit drive an LED. No need to get your fancy $2-3 timer investment fried for no reason.
What we are looking for is a small pulse with space between pulses. Use the potentiometers to adjust your pulse so it seems close. Remember that blood only travels one direction in a given blood vessel, so don't try to get that second "thump."
Waterproof your circuit as best you can, but maintain the ability to adjust the pulses. Depending on how long your effect tubing is, you will need to adjust the pulse duration.
Extra-Super-Mega-Fancy:
Use a microcontroller circuit, and make the effect as realistic as you like. If your situation calls for an on screen death, you may want to have the pulse length get a little shorter over time. You may also want to add a digital potentiometer or a separate connection with a resistor to end the sequence with a only a fine trickle escaping the fake wound.
Using the schematic, and solder of course, set up the timing circuit. Before adding it to the pump, have the circuit drive an LED. No need to get your fancy $2-3 timer investment fried for no reason.
What we are looking for is a small pulse with space between pulses. Use the potentiometers to adjust your pulse so it seems close. Remember that blood only travels one direction in a given blood vessel, so don't try to get that second "thump."
Waterproof your circuit as best you can, but maintain the ability to adjust the pulses. Depending on how long your effect tubing is, you will need to adjust the pulse duration.
Extra-Super-Mega-Fancy:
Use a microcontroller circuit, and make the effect as realistic as you like. If your situation calls for an on screen death, you may want to have the pulse length get a little shorter over time. You may also want to add a digital potentiometer or a separate connection with a resistor to end the sequence with a only a fine trickle escaping the fake wound.
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