[Sold] 4. Batch "TA" Bistro/Bistro HD OTSM/Narsil drivers, 46mm for Q8 1S or 2S, Clicky or E-switch, SIR404

OK. Thanks. I hope 2x more 38.5mm drivers get ordered by somebody. :innocent:

I am interested in 1 17mm OTSM 2S zener mod driver, short spring, running Bistro. Also 2 X 1S 17mm OTSM with only the single channel 7135 and FET, running Bistro, short spring as well with moonlight set to 1 and mode 22 and 23 with a low mode setting of 2 and highest mode PWM set at 220 for low Vf leds. PM me if I need to try and explain this better.

PM me with a price, please???

Thanks Matt

Texas Commander

Can this driver handle 4 xhp70.2 with 2s2p input?

for 4 XHP70.2 I would use a SIR404 FET it can handle 36.6A at 70°C ambient temperature

Bistro OTSM needs a LDO this in 17mm size adds 3$ just material cost as it is very expensive

for Modegroups can you send me the changed code, just be aware that if you use only 2 channels there are old Bistro Modegroups used
for low Vf LEDs maybe potting the AMC bank is the better solution

the TC looks good if you move the FET to the LEDs MCPCB to cool it or you have to be below 10W of LED power to keep the FET cool enough

I got no experience with Texas Commander driver so building and testing it for just one driver makes not much sense
I can order the parts and reflow it

I will get them together. I am not concerned about the 7135s, I am concerned about setting a current limit on the high end. Quad 219c’s will draw like crazy and I refuse to build down with little wire and no bypasses to restrict current to an uncontrolled amount. I understand otsm is higher, but it works! The modes do not go to hell with heat!

to control the Nichia 219s its probably better go with a full bank of AMCs plus FET and reduce the FET to like 150

for a pocket rocket you may want to add a thermal path from shelf to the MCU to get the temp protection be less delayed

You can keep it below 10W for regulated modes and higher than that just PWM the FET. Overall it should be slightly more efficient than 7135s at low-medium modes. Also, some like the fact that there’s a broad range of modes (going down to quite low) that are PWM-free.
I thought this could make it interesting for some users….though actually I didn’t say that I want to buy it, so the number of requests is 0 so far. :wink:

I can build you one, but 3 or more would be better to reduce the costs

just ordering small amounts of parts and 3 boards does increase the material costs
testing and troubleshooting this driver is also new to me

I’m in the waiting mode. I’m wating for upocoming hosts and for a LED seller to get a new batch. After that I may (or may not) wait a little longer for GXB17, depending on what comes around. I’m not looking to buy TC (though it may change), but I thought others could. In general more niches covered = more buyers

including GXB17 driver in next batch makes more sense than TC

You’re probably right

Put me down for a 21mm with an ATTiny85. I’ll add details as I figure them out, but I want to get on the list for the time being.

Lexel, so far I have one of the 17’s from batch 3 installed. Love it!!!

I want a couple more… a 30mm, maybe 2 and maybe something else to be determined. I hope it is okay to get back to you exactly what by next week as I am traveling / busy. If that does notwork, I understand.

yeah its summer time and the interest is not that high atm, so next batch will take some time

I thought about ordering a bunch SIR800 as I got smaller parts, 85 MCUs and some board sizes left from last batch

and then be at least able to build some Narsil drivers, but no OTSM

I guess I’ll hold out until you’re ready for some OTSM drivers and/or boost drivers.

Lexel, I would like to get 2 - 30mm; single cell, 2.8 LVP, Narsil, standard temperature control, PowerOn=No (you need to press e-switch to turn light on after turning on the talcap switch). I’m not sure about spring length so I would like short and long for each and will install whatever works best.

Question for you… With your drivers will it work to copy the firmware, save it and then burn it to another driver? I am wishing I had ordered one of the previous 17mm Narsil with PO=No instead of Low. One way to fix that would be to copy the firmware from one of these new 30mm. I have the required hardware items as well as Atmel Studio and AVR Tools, but I have not yet used it yet so all I know is a little theory.

I have not been able to find anything referring to PD on the NarsilM drivers. I would like to use the 38.5mm in a D01 with a tail power switch and side e-switch. I want the unit to turn on in low mode when the power button on the tail is pressed. I do not need or want an off mode on the e-switch.

I think I will also want one set up the same way for my S70, need to research the driver size before I order.

Matt

you would loose the temperature calibration
I wrote on many driver labels the value that shows the temp offset like –12 or +3

with the new NarsilM you can copy the firmware and do the temp set over the UI, while the temp blinks wont be accurate as its not matching the offset
the temp calibration and preset of the temp protection on NarsilM is optional, while it was needed on v1.4