So I had this LED flasher circuit with a LM3909 and a 220uf 25v capacitor powered by a D battery. I've read up on this forum about the 555 timer mod, and it made me think that I might have a simple rapid fire solution with my LED flasher.
So I researched this LM3909 and found out that if you lower the capacitor value it will give you faster flashing. After powering this unit off of a scrapped USB cable, I tried a could different capacitors, 4.7uf, 10uf and 20uf showed as a solid LED so they oscillated too fast and I assumed wouldn't do the job, and 100uf was too slow. I found a 47uf 16v capacitor laying around in some random circuit board, and it flashed very fast, so it was just what I was searching for.
Now I hooked the wires that went to the led to the top 2 leads of the trigger, and it did rapid fire fire just great, but It might have made the left analog shake a little bit because there was some minuscule movement going on, and I'm assming its probably because of my power source. The leads give off 3.8v according to my multimeter running off of usb, and I'm assuming if I power it from the usb leads on the controller it might give the same voltage, so would I need a resistor? This chip can run off of power as low as 1.5v so maybe there's a better power source on the board for this.
I'm testing it on my old matrix wireless but If this works I'm probably going to put it into my wired CL controller I just bought because the wireless controller is seriously worn out.
Besides the power where would I connect a momentary switch to make this work out? Maybe one of the leads going to the trigger?