【convoy】

KevinZA1988 · 2019-04-04T10:38:18.000Z

Simon, are you going to make a 21700 light with an integrated shelf like the S3?

zak.wilson · 2019-04-04T16:02:44.000Z

Simon Mao:

sorry,i can not find [rosy SST-20] tints

Thanks for the update. I was waiting to buy more SST-20s to see if you were getting them.

Can you put the C8 with SST-20 in the store? I want to be able to link to it in my recommendation list - explaining that it’s possible to special order is too complicated for the list.

Barkuti · 2019-04-04T17:22:47.000Z

Simon Mao:

…

LD25 can not output such big current,

i will ask LDCH if he can produce suitable driver for SST40 and the same current setting as LD25

I've been lingering with the idea of increasing the current output of an LD-25 via sense resistor modification. Adding an R020 would raise its maximum current to 4.5A, for example. I know I would need to somehow manage extra cooling for the onboard AON7520 MOSFET to avoid ;-) fireworks.

This newer SST-40 driver would thank a better interface. Luckily with a current sense adjustment it can be a no qualms better fit for lower current emitters. For example, an R020 plus 3x R050s is 4.4A at 40mV of sense voltage; an R010 plus an R050 is 4.8A.

Overall I like LDCH's drivers. I would prefer a newer much more powerful LD-29 style buck driver. Thrice (multiply by three) its maximum current drive please. I recently tried to mod one for higher output but it blew up, the onboard XC9220/XC9221 buck controller is unsuitable for using more powerful (higher input capacitance) MOSFETs, it cannot drive them.

Cheers

djozz · 2019-04-04T19:19:56.000Z

Inkidu:

Simon, please consider a stronger clip in your newer designs. For me, the thinner metals clips are not that secure and bend over time. Thanks.
(Pic removed)

Inkidu, you posted a 7.5 Mb picture, it took forever to load, resizing it is more reader-friendly

Inkidu · 2019-04-04T20:25:02.000Z

djozz:

Inkidu:

Simon, please consider a stronger clip in your newer designs. For me, the thinner metals clips are not that secure and bend over time. Thanks.
(Pic removed)

Inkidu, you posted a 7.5 Mb picture, it took forever to load, resizing it is more reader-friendly

Sorry about that. I’ve been setting my uploaded images for 100% and also thinking that there was some downsampling that was already going on from the links to photobucket.

g_damian · 2019-04-05T19:03:25.000Z

17mm / 22mm driver for luminus sst40 LED has attiny13a onboard!

Other observations:

- no PWM

- lowest mode is around 26mA (tailcap current, regular multimeter)

- 10th brightness level is around 620mA (clamp meter) (full battery)

- 10th brightness level is around 630mA (3.3V battery)

- around 30 levels to choose from

- 100% mode current depends on LED and battery

- no memory

- reset (8 half clicks) resets all modes

lighted tailcap works without modifications, but tailcap leds are dimmer than with other driver

Barkuti · 2019-04-05T20:26:42.000Z

Thanks for the input g_damian. A few questions:

Is the lowest mode (3rd mode in 1% brightness I guess) ramping adjustable? I presume it is not but had to ask.
What is the total number of modes? Is it just 3 like the chart depicts, 2 standard modes plus 1 special?
30 levels to choose from? How long does the ramping lasts?

Thanks.

^:)

LarryLumens · 2019-04-07T22:58:30.000Z

OK ladies and gentleman the answer you have all been waiting for, Does this UI ramp and how do you do It?
Yes it does ramp. Just like the picture states. You full press and it goes to a blinding 100% with my 30q. If you decide to go to mode 2 (ramping) you must 1/2 press 2x then 5 times to configure. It will then automatically pulse at different brightness levels from low to high in about 25 pulses. You can stop at the one you want with a 1/2 press(edit or turn off) and it has memory.

Update.Mode 3
1 full press then 3 1/2 press gets you to mode 3. Strobe is default. To configure mode 3, 5 1/2 presses and it will pulse on low. 1 pulse for the 1st choice, 2 pulses for the 2nd etc. When you get to the one you want, choose it with a 1/2 press(edit,or turn off). I will have to practice in mode 3 but mode 1 and 2 are very easy.
This is very easy with it in hand. There was a loss in translation but together we figured things out. I give this a thumbs up. I love ramping.
Edit 2. The color looks neutral to me. Not orange or blue. Right in the middle where I prefer

LarryLumens · 2019-04-06T00:08:06.000Z

I’ve been playing around with the SST40 C8 and found some interesting details.
If you set a brightness on mode 2 and beacon from mode 3. It will remember both your mode 2 brightness level and mode 3 choices. I am still having difficulty changing different choices for mode 3 but strobe is the easiest to set and the one I will use most anyway. It will be nice to navigate all the choices in mode 3. I am going to have to make a demonstration video as soon as I have mode 3 down.

g_damian · 2019-04-11T19:51:30.000Z

The driver has 3 modes. It always starts in first mode. Double half presses activate second mode. Triple half presses activate third mode. Single half press goes back to first one. And so on.

Each mode is configurable (5 half presses). Configuration is memorized. Two modes are configurable with ramping. Ramping goes always up from current brightness, blinks at the top, rewinds to the bottom (the dimmest brightness). It takes around ~~5 seconds from the bottom to the top (it’s approximate, I didn’t measured it and will check later)~~ 14 seconds and 5 seconds pause at the top, 19 seconds total. Third mode configuration blinks couple times, half press chooses option. So half press after 2 blinks chooses second configuration option for third mode.

It is quite simple firmware and interesting because it doesn’t use half presses to advance in modes, like biscotti. I like it, strobe can be disabled, modes can be configured 1-10-100%. Also it’s nice to have FET no PWM drivers available

I’m wondering who will write custom firmware for this first

Simon_Mao · 2019-04-08T01:41:07.000Z

Inkidu:

Simon, please consider a stronger clip in your newer designs. For me, the thinner metals clips are not that secure and bend over time. Thanks.

what about the clip on convoy S8?

Simon_Mao · 2019-04-08T01:42:15.000Z

zak.wilson:

Simon Mao:

sorry,i can not find [rosy SST-20] tints

Thanks for the update. I was waiting to buy more SST-20s to see if you were getting them.

Can you put the C8 with SST-20 in the store? I want to be able to link to it in my recommendation list - explaining that it’s possible to special order is too complicated for the list.

you can order C8+ 219C and note ” SST20 in the remarks” ,or i will add correct link later

everydaysurvivalgear · 2019-04-08T19:17:39.000Z

g_damian:

The driver has 3 modes. It always starts in first mode. Double half presses activate second mode. Triple half presses activate third mode. Single half press goes back to first one. And so on.

Each mode is configurable (5 half presses). Configuration is memorized. Two modes are configurable with ramping. Ramping goes always up from current brightness, blinks at the top, rewinds to the bottom (the dimmest brightness). It takes around 5 seconds from the bottom to the top (it’s approximate, I didn’t measured it and will check later). Third mode configuration blinks couple times, half press chooses option. So half press after 2 blinks chooses second configuration option for third mode.

It is quite simple firmware and interesting because it doesn’t use half presses to advance in modes, like biscotti. I like it, strobe can be disabled, modes can be configured 1-10-100%. Also it’s nice to have FET no PWM drivers available

I’m wondering who will write custom firmware for this first

What amperage do you get on 100%? I know this will LED dependent i am wondering if the driver will be suitable for triples?

caplang · 2019-04-09T12:05:41.000Z

Simon Mao:

you can order C8+ 219C and note ” SST20 in the remarks” ,or i will add correct link later

Simon, in case I want to order Clear C8+ with SST40 I can do that by leaving you a message?

BurningPlayd0h · 2019-04-09T19:20:01.000Z

Simon Mao:

Inkidu:

Simon, please consider a stronger clip in your newer designs. For me, the thinner metals clips are not that secure and bend over time. Thanks.

what about the clip on convoy S8?

It looks more durable but isn’t deep carry at all, unless the new light had the clip slot much closer to the tail of the light.

Barkuti · 2019-04-10T03:51:25.000Z

everydaysurvivalgear:

…

What amperage do you get on 100%? I know this will LED dependent i am wondering if the driver will be suitable for triples?

It is a current limiting linear driver stock configured for 8A (40mV sense voltage over the onboard 5mΩ sense resistor) on high mode. If not enough input voltage it won't attain 8A (or whatever) output, of course. The current limiting thing is done by the microcontroller tuning the MOSFET gate voltage for it to burn all excess voltage and power. This is the key difference versus an unregulated MOSFET driver in which the full battery voltage is used to open the MOSFET gate and lower modes are attained with PWM. In unregulated MOSFET drivers the MOSFET hardly gets any strain, in linears the MOSFET mostly bears it all. This is the reason for the super bigass AON6788 MOSFET in this driver.

:-)

BlueSwordM · 2019-04-10T04:07:09.000Z

I mean, it’s a super capable driver.

If this had Biscotti along with a copper shim, it would make for an excellent linear driver.

Simon_Mao · 2019-04-10T08:18:54.000Z

caplang:

Simon Mao:

you can order C8+ 219C and note ” SST20 in the remarks” ,or i will add correct link later

Simon, in case I want to order Clear C8+ with SST40 I can do that by leaving you a message?

ok ,just note “clear body ” in the remarks

alberto7 · 2019-04-10T12:49:36.000Z

Convoy s2+ 21700 will use 16 or 20mm led star?

Simon_Mao · 2019-04-11T04:18:03.000Z

alberto7:

Convoy s2+ 21700 will use 16 or 20mm led star?

20MM