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- Apr 7, 2008
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- 66
I finished my P7 driver and drop-in module last week, but was unable to check it out in a 2C Maglight until today. The results were a bit unimpressive compared to my quad Q5 bike light partly due to having 2 yellow dies on each of my DX P7's, but it is a start. The stock Mag reflector also leaves a lot to be desired with a giant blob in the center, but I will probably make it into a MOP with some clear spray paint. I was originally thinking of a much more complicated design with a tail clicky, but decided to try it with the stock switch (minus the bulb holder post) and to my surprise it worked (it has been one of those weeks were nothing else seems to).
I used a driver setup based on Stephan's design here (but used a KD multi-mode driver which is based on the same design):
http://www.candlepowerforums.com/vb/showthread.php?t=195358
I added one more 7135 using a DX 1400ma board cut in half making it 2.5 boards in the "sandwich".
I also used one of the DHS P7 C-size heatsinks as the basis of the module and added an aluminum tube to help with the heatsinking on the drivers (which were potted using DX heatsink compound). The tube also makes the negative connection to the body which contacts the tail that hangs off the negative terminal of the stock Mag switch (which is compressed between the Mag body and the module).
Please pardon the poor quality pics:
This is the bottom multimode board in the sandwich. The wires connected to the sides will continue up through the other boards and make the negative connection as well as provide the ground connections.
It is difficlt to see here, but there is a wire that goes from the pad on the 7135 on the lower left and is bent so that it will act as a center post for the next board. The negative and positive leads for the LED are also attached here, and a jumper to the second board (black wire on the bottom going to the same pad as the green wire).
The second board is attached and the jumper from the first is soldered to the pad on the right.
The center post is bent to make the connection to the single 7135 used on the last half board, and there is a jumper attached from the second as well. The ground connections to all boards are made with wire posts that run along the left and right edges.
Module attached to the heatsink. This is actually the second one I made and I used red wires instead of the black ones in the pics above.
Completed module, with a center spring scavenged from a Mag bulb spring. The negative connection was made with a wire set in a groove and soldered in, the other end solders to the negative contact on the bottom board.
One problem I am having is that the stock Mag switch has some bounce so it will bump and trigger 2 modes when clicked once. I will have to do something about that if I decide to use it for anything on a regular basis. I am currently running this off a C size L-ion battery from AW.
I used a driver setup based on Stephan's design here (but used a KD multi-mode driver which is based on the same design):
http://www.candlepowerforums.com/vb/showthread.php?t=195358
I added one more 7135 using a DX 1400ma board cut in half making it 2.5 boards in the "sandwich".
I also used one of the DHS P7 C-size heatsinks as the basis of the module and added an aluminum tube to help with the heatsinking on the drivers (which were potted using DX heatsink compound). The tube also makes the negative connection to the body which contacts the tail that hangs off the negative terminal of the stock Mag switch (which is compressed between the Mag body and the module).
Please pardon the poor quality pics:
This is the bottom multimode board in the sandwich. The wires connected to the sides will continue up through the other boards and make the negative connection as well as provide the ground connections.
It is difficlt to see here, but there is a wire that goes from the pad on the 7135 on the lower left and is bent so that it will act as a center post for the next board. The negative and positive leads for the LED are also attached here, and a jumper to the second board (black wire on the bottom going to the same pad as the green wire).
The second board is attached and the jumper from the first is soldered to the pad on the right.
The center post is bent to make the connection to the single 7135 used on the last half board, and there is a jumper attached from the second as well. The ground connections to all boards are made with wire posts that run along the left and right edges.
Module attached to the heatsink. This is actually the second one I made and I used red wires instead of the black ones in the pics above.
Completed module, with a center spring scavenged from a Mag bulb spring. The negative connection was made with a wire set in a groove and soldered in, the other end solders to the negative contact on the bottom board.
One problem I am having is that the stock Mag switch has some bounce so it will bump and trigger 2 modes when clicked once. I will have to do something about that if I decide to use it for anything on a regular basis. I am currently running this off a C size L-ion battery from AW.
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