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Heli-Pad Flasher

Last modified: 01/27/09

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HELIPAD FLASHER

Below are a few pics of the LED Flasher boards/circuits for the HeliPad… (click on each to enlarge)

I have the power wires attached… and on one PCB, I wired up one LED channel (as an example of an LED output hookup).

In regards to the LED output hookup, the common PCB connection is actually +V (supply voltage), not Ground.  As wired, the output voltage connected to the LEDs will be the same as the supply voltage. So, if you use 12volts as your supply, you need to use the appropriate inline/series resistor to each LED.

I worked the code to death (as I always) and have devised a fairly complex (but simple to operate) LED sequencer.

It contains 12 different LED flashing patterns that are programmable by the user, with no switches required.  It uses the momentary cycling of the power switch to change the sequence number.  The sequences go like this (I think…)
 

HERE'S A FEW VIDEO LINKS OF IT IN OPERATION:

#1  C Helicopter Landing Zone - 6 LED Patterns
#2  HELI-PAD LEDs!

 

1)       Lights LED#1 (constant), 1/2 sec later, Lights LED#2, 1/2 sec later, Lights LED#3, 1/2 sec later, Lights LED#4, 1/2 sec later, Lights LED#1 and repeats

2)       Lights LED#1 (constant), 3/4 sec later, Lights LED#2, 3/4 sec later, Lights LED#3, 3/4 sec later, Lights LED#4, 3/4sec later, Lights LED#1 and repeats

3)       Lights LED#1 (constant), 1 sec later, Lights LED#2, 1 sec later, Lights LED#3, 1 sec later, Lights LED#4, 1 sec later, Lights LED#1 and repeats

 

4)       Blinks LED#1 (100ms Flash), 1/2 sec later, Blinks LED#2, 1/2 sec later, Blinks LED#3, 1/2 sec later Blinks LED#4, 1/2 sec later, Blinks LED#1, and repeats

5)       Blinks LED#1 (50ms Flash), 1/2 sec later, Blinks LED#2, 1/2 sec later, Blinks LED#3, 1/2 later, Blinks LED#4, 1/2 sec later, Blinks LED#1, and repeats

6)       Blinks LED#1 (Double Flash), 1/2 sec later, Blinks LED#2, 1/2 sec later, Blinks LED#3, 1/2 sec later Blinks LED#4, 1/2 sec later, Blinks LED#1, and repeats
 

7)       Blinks LED#1 (100ms Flash), 3/4 sec later, Blinks LED#2, 3/4 sec later, Blinks LED#3, 3/4 sec later Blinks LED#4, 3/4 sec later, Blinks LED#1, and repeats

8)       Blinks LED#1 (50ms Flash), 3/4 sec later, Blinks LED#2, 3/4 sec later, Blinks LED#3, 3/4 later, Blinks LED#4, 3/4 sec later, Blinks LED#1, and repeats

9)       Blinks LED#1 (Double Flash), 3/4 sec later, Blinks LED#2, 3/4 sec later, Blinks LED#3, 3/4 sec later Blinks LED#4, 3/4 sec later, Blinks LED#1, and repeats

 

10)   Blinks LED#1 (100ms Flash), 1 sec later, Blinks LED#2, 1 sec later, Blinks LED#3, 1 sec later Blinks LED#4, 1 sec later, Blinks LED#1, and repeats

11)   Blinks LED#1 (50ms Flash), 1 sec later, Blinks LED#2, 1 sec later, Blinks LED#3, 1 later, Blinks LED#4, 1 sec later, Blinks LED#1, and repeats

12)   Blinks LED#1 (Double Flash), 1 sec later, Blinks LED#2, 1 sec later, Blinks LED#3, 1 sec later Blinks LED#4, 1 sec later, Blinks LED#1, and repeats

It’s pretty slick… I think #9 above looks best… double flash (LED#1 thru #4) with ¾ second delay between them.

To change to the next LED sequence, you simply power up the board (switch) momentarily (all LEDS turn on), then power off.  Next time you power up the circuit, the next sequence in order will be displayed.  Also, when you power up the circuit, ALL LEDs turn on for about 1 second (maybe it’s slightly less),  It is in this timeframe you need to power the circuit switch off in order to go to the next sequence described above (sequence displayed next time you power up).  If you always power up the circuit and leave the switch on, the flasher circuit will always play back the last sequence you had used previously.  Sort of… set it and forget it.  The only time this stored sequence will be changed is if and when the circuit is “momentarily” powered (you sort of have to do this purposely I guess).   

Board Dimensions are roughly 7/8” x 7/8” by just under ¼” thick.
 

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