Convoy C8+ SST40 Firmware Question

Ordered one myself :D if anything, because the curiosity was killing me on the inside.. :)) (emitter aside and all)

Here's hope we'll get them soon enough :) And also hope that we'll get a 21700 version as well.

Does anyone know if this is a direct-drive type driver like the blf a6 or mtn fet version? Since its current limited, is it linear? I’m not very savy with drivers, but trying to figure out a good led/host to pair this driver with other than the C8 and a SST-40. Any clue on how its regulated? not a lot of info on the convoy site. Thanks

My guess is this is a higher powered version of the LD-25 driver. As linear drivers they sense the current flow in their current sense resistors (10mΩ for the LD-25, 5mΩ for this SST-40 one) and then precise tune their MOSFET's gate voltage to limit current output to whatever they're set to. This results in the MOSFET dissipating any dV times current excess power (if any excess is present, of course).

I wonder if current can be set for its different modes, very much like it can be done in the LD-25 (nearly sure it can be done).

^:)

I think on full brightness its a straight direct drive there looks to be a low power mosfet and a full power mosfet. The big mosfet is rated at 80amps its a beasty part.

Interesting

Anybody have one in their hands yet to confirm if direct drive or not on high? Thanks

A little surprised Simon hasn’t gifted one to one of you “reputable” (I.E Honest)
reviewers to check it out?.

Or has he???.

Basic C8+ with 26650 and side sw. with simple On/Off.
Puleeeeez. (Just for us lazy buggars out here hey.)

I bought 4 of these (Drivers only) from the convoy store and the first one I used in a C8 did not work as advertised. Mine has 2 modes. mode 1-L,M,H then mode 2- L,M,H and strobe. I have sent a message to Simon with no response. I can also add that it takes 5 half presses to switch modes. Thought maybe he sent the wrong drivers to me. Even went back to double check my order because I know there are 2 versions of this driver. Weird.

Does anybody have an idea what other firmwares will work with that driver?

Had one of these arrive yesterday.

The UI is a bit strange. First full click took me to what appeared to be full power. Two half clicks took it down to a lower level. Nothing too bad there.

Five half clicks got me to the bit where it ramps through the power levels. It’s a bit odd and needs getting used to.

As usual I can’t criticise the quality, everything is spot on.

On high I’m getting 6.9A at the tail from a Samsung 30Q which seems pretty good, and it’s bright, considerably brighter than my C8 with XPL HI and Fet.

I might get a BLF A6 driver from Banggood and drop that into it assuming the SST-40 won’t burn out using a Fet.(?) The UI would be a bit more user friendly.

I reckon that 6.9 amps should be giving me over 2000 lumens. Pretty good for a stock C8. I might even leave the current driver in place, I like going straight to full power.

Is the ramping level stored in the first and second mode, or is the first mode always high? The diagram is confusing.

I am yet to finish a C8S build with one of these you are speaking of. Despite weird the UI features two ramping modes, 1st and 2nd. The third is the multiple selectable functions one. I plan on setting it as follows:

  1. Single tap: ramping set somewhere in the middle, for a nice and practical amount of output versus current consumption.
  2. Double tap: ramping set at 100%.
  3. Triple tap: 1%.

Thu, 05/16/2019 - 01:24

So can this driver be reflashed ?

Can these C8+ be fitted with an ON/OFF 100% sw.
Nothing else?.
Or. As I have in a SolarStorm SC02. (18650 cell)
Side sw.
1 and hold. is ramping, Set where you like and it’ll stay there. with a single click… to 60%ish.

Then it’s.
1 click for that setting.
second click is 100%.
The perfect switch for a no nonsense torch.

Get rid of all the other settings, OR don’t have,
IN THAT torch.
Just have fancy switches in multiple others
as we all do.
And I’m just a starter novice at collecting torches.

I haven’t checked this personally, but from the diagram it would appear to be the case.

Just got my driver for my s2+ triple xpl hi. Loved the driver so far

the first 2 mode is ramp programmable.
while the 3rd mode is a special group

but there is no memory in the mode cycle so it always go mode 1 mode 2 mode 3

you can set your first and second mode brightness to your liking by 5 taps when you’re on the mode.
while the 3rd group you can only choose a few options listed on the mode lists

Just tried a brand new, 30Q and got 7.1A at the tail. This could end up being my favourite C8

My C8+ SST40 with ramping driver arrived a little while ago and I’m very pleased with this light. Firmware seemed confusing according to the diagram but in real life it’s a fantastic firmware.

I measured 5.9A on 100% brightness with an LG HG4

It seems the reverse clicky switch supplied is the same used in other Convoy models (S2, S2+ etc). What are people’s opinions/experiences on the lifetime of this switch with 6 amps going across it? I couldn’t find any info on what the switch is rated for.

Omten 1288 switches eggmang, also known as “small Omten”. They're rated for 1.5A or so. I have some in service doing nice at up to 10A. When going really high current with them it is advisable to bypass the spring attached to them, namely if in direct contact. Their housing is made with a soft plastic which readily deforms with heat, this means you have to be pretty quick and careful when soldering over their terminals. Every time I solder one I verify test its resistance with my precision power supply and multimeter, a brand new or undamaged unit features 4mΩ of resistance or very little more.

I really find no good reason to make a switch with such a @#$% plastic. Pity.

:-)