I’ve not read whole thread so if this has been covered then I apologise.
Would it be possible to make the 46mm SRK driver with a single contact point in the centre of ~10-12mm for 2s devices. This would then work brilliantly for the MT07 as it uses a double spring in centre that contacts the top of the carrier, the carrier itself is then configured 2s2p with the outer being - and inner being +.
Got a picture of what you are talking about?
If you just need the copper pour in the center of the driver, then they all already have this, it just has solder mask over it. You can scrape off the mask or you could solder a disc over the mask.
That’s the MT07 driver (photo picked from Tom E’s thread)
You could use the zener mod on the normal driver for that but you really want an LDO for an e-switch. Nothing would easily work for that without some heavy modding. It could be redesigned to work with that but I have pretty much stopped development on these drivers as I am wanting to put my efforts into the next gen of drivers with new MCU’s and layouts.
Ooooh, where do you get a beastie like this?
I’m looking for a 22mm ~3A (8×7135, don’t care if 2.8A or 3.1A) in just stoopit 1-mode, on/off.
No idea if a FET driver can limit the current so, but the driver in this pic looks absolutely mouthwatering.
If I can use a TA driver and program it to 1-mode with Biscotti, tell me? Don’t want unregulated output, and don’t want to use 2 cells in the F13 for use with a buck driver.
I got this modification to TA 2S Skyray driver
drilled out the connections on the LED - pad
and bridged all 4 pads
2 drivers are still for sale can be modded to 1S/4P, 2S/2P and 2S/4P
That is a TA driver in the pic. It can easily do what you want, just build or buy a 22mm driver and then select mode the mode group you want. For a 1 mode regulate setup you would want mode group 10.
Although you can do the same thing with a convoy biscotti driver if you will never use any of the other features.
If you plan to make a new series of drivers then may I suggest designing one for this flashlight (MT07) as if it becomes possible to get a smooth reflector for it then I can see this being a brilliant XHP70.2 thrower if driven properly.
This was a pretty simple change and I had a few minutes so I went ahead and made a TA version of this. I added it to the OP.
I don’t use 7135’s with 2s+ setups anymore, just had too many issues with them frying and staying on no matter what. Really annoying and not worth the hassle for a bit lower moon mode on a massive light like this.
TA46 LDO - 46mm Skyray driver that has an LDO setup with a single contact
This driver is basically the same as the one above except it has a single contact pad. This means that you will need to use a cell carrier to get the input voltage setup for 2s or 4s. It can accept and work with 1s, 2s, 3s, or 4s input voltages as long as the output LED setup matches the input (aka, 6v LED for 2S cells ect).
It is exactly the same layout and driver as the one above except for the contact on the bottom.
Oshpark Link: OSH Park ~
Hi TA, is it possible to use a TA46LDO with single contact driver in my 2S2P MT03 too?
As long as it uses a cell carrier so the cells don’t short. The input voltage can be anything from 1s to 4s as long as the LED’s match the config (aka, a 6V LED for a 2S cell setup).
TA is the driver outer ring connected to the ground?
The MT03 had 3X xhp70 emitters that I intend to wire in parallel to the driver.
Yes, just like all the other TA drivers, outside ring is ground and the inside is V+.
If you input 2s then xhp70’s in 6v config will work fine. Although be prepared for big power draw. It could easily draw ~20-25A depending on the cells.
Great.
My MT03 has originally an 4S driver, wich I burned in it’s very first day of usage, because I resistor modded it, but the driver wasn’t able to hold the increase in current.
Contacted HIkelite and bought a new driver, but almost 2 months after my order was made Hikelite didn’t send the driver to me.
After several emails to Hikelite, trying to resolve the situation, I had to open an Paypal dispute, and they choosed to refund my payment, instead of shipping the new driver.
Shame Hikelite, a good product but an horrible client support. Won’t buy again from then.
I will build an TA driver for this light. This will be my highest power mod project!
If everything goes fine, in the end, this will became a big and bad HOTROD!
Thanks TA.
Obiously if the light is setup for 4S cells then the LED’s will need to be setup in 12V mode as well to match. These drivers can’t buck or boost the voltage.
Also, I would leave the 7135’s off as I said above, they are more hassle then they are worth in 2S setups from my experience.
Just make up a ramp table with TK’s script (TomE may have one setup already) for an FET only ramp.
TA, that’s interesting information. I will build the driver like you recommended.
Already modded the battery plates for 2S2P config with success.
Next step is ordering the parts for the driver.
Yep, that should work.