Hello friends. My first post here, hoping to get as many opinions as possible on my build. I am a beginner, so bear with me please.
I am looking to make a headlamp using 2 XM-L LEDs. I want the option to drive them at full blast (3Amps), and to realistically use them at half of that power to not just burn through batteries. This will be used for mountain biking at night.
I want to keep it as inexpensive as possible. I have a large number of high quality Sanyo AA 1.2v nimh batteries, so I want to use them for this build. I don’t mind the weight, and I have them already. The number and configuration is up for debate, the use of nimh AA’s isn’t.
I have tons of battery holders to wire things in series, parallel, you name it. I am basing my current plan around two 6xAA battery holders wired in parallel.
Drivers for these high amp requiring beasts are more of a pain. I don’t want to drop the money on the more expensive taskled drivers, and they are out of stock and I am impatient.
I have purchased two of these drivers: http://www.lightmalls.com/super-output-ssc-p7-led-driver-board-low-high-middle-5-5v-15v-2
I was planning on running them in parallel, each supply a full 3A at high if wanted.
Here is my crude drawing:
Please correct the things I have messed up. I am worried I have this wired incorrectly. My goal is the wire the two batteries in parallel, and wire the two drivers in parallel.
My main question is switch placement. Is this in the correct spot? How will this control the various modes the drivers have to offer. I know I need a high amp capable switch, but does anyone have any exact recommendations? I feel like putting it between the battery and the drivers might not be correct?
Thanks folks. I wish this stuff came more naturally to me, but it has been like 10 years since I have taken a physics class!