Which size driver? Which configuration? (1S / etc) Is there a bleeder installed?
17mm
Attiny 25V
no bleeder
1S R1 1k / R2 3.3k
and
2S LDO R1 1.78k/ R2 2.21k
I got the feeling the resistors are maybe switched in manual description R1 smaler than and R2 is opposite to normal Bistro drivers?
build and flashed like in Flintrocks topic
avrdude -c usbasp -p t25 -u -Uflash:w:bistro-TAv1-OTSM-HD-attiny25.hex -U lfuse:w:0xd2:m -U hfuse:w:0xde:m -U efuse:w:0xff:m
avrdude -c usbasp -p t25 -u -Uflash:w:bistro-TAv1-OTSM-LDO-HD-attiny25.hex -U lfuse:w:0xd2:m -U hfuse:w:0xde:m -U efuse:w:0xff:m
P.S.
the 2S LDO needs a diode which is not present at the 17mm board, so I need to piggyback this
OK adding the diode to the 17mm 2S worked, its now alright
maybe the hex file he delivers is corrupted for 1S
You can try the file I gave you for 1S, but the modes are customized:
battcheck <- turbo <- very low <- STARTS HERE low -> 1x7135 -> all7135s
edit: facts
I figured it out
I made a mistake and populated C1 with 10uF instead of 1uF
used to do always 10uF there for Narsil and TA Bistro drivers
reflowing a 1uF solved the problem
Minor adjustments to OP
added info about NarsilM
Prices reduced slightly for OTSM and LDO due to quantity discount and a cheaper tantal cap with same specs
if you got Bistro HD OTSM message me to get this new OTSM part prices and a paypal refund as the original pricing was too high
as Oshpark was so kind and did more 46mm with correct solder mask I refunded the 2/3 costs on this size
to show the price difference from flintrocks suggested tantal cap to another brand with identical specs
prices does not include 19% import tax
I did some changes for 2S Narsil lights
the shut down voltage should be highter if the cells are not perfectly matched
not going below 3V per cell here
in a 1S light lower is no problem, but 2S needs some buffer
all SIR800 FETs are used now
Great news! Thanks!
Pleasant surprise but if given the choice I’d rather you had kept it and had a 
as thanks for the time and work on these drivers. That said, I respect the decision and would do the same in a similar situation. You have my respect and appreciation and I look forward to the possibility of future offerings.
good news Kaidomain delivered 10 short and 10 long 6mm diameter springs today
here a pic, why 15mm Bistro OTSM is a bad idea as the driver has no C2, R1 and R2 pad
R1 and R2 are soldered together with the red wire in the middle and soldered under the Attiny25V to pin4 of the MCU
C2 sits on the indicator LED resistor with cut trace on one end
solder bridge from diode to C2
looks a bit messy as I had also to change C1 from 10 to 1uF
and my 38.5mm Cuoroi LDO piggyback 2S/3P
driver needs to be cleaned from solder paste and flux residue which got there getting it on the LDO legs and C2 soldered
today springs came from Kaidomain, so I soldered them for the people who dont think they can do it, it adds 2.5$ shipping costs and 0.5$ for soldering
on the 17mm driver with long springs its a tight fit
One thing discovered with Bistro OTSM 2S
2S LDO setup does not support LVP as it uses the internal voltage reference compared to MCU voltage
problem is the LDO gives the MCO constant 5V
Have you tried out the lvp on the LDO Narsil M yet? I hope it’s working well.
Btw, on my order I just want the long spring loose. I can solder it on.
so did the Bistro drivers I assembled so far
and the Narsil v1.4
I had 2 drivers where in 2S operation one AMC7135 had this parasitic drain issue when the driver is in sleep mode
they are oficially not build for 8.4V
still waiting on boards from Oshpark that I have ordered later as more were requested than originaly planned
I printed the shiping addresses with information which drivers and export declaration
then used residue tape to fix the drivers where they belong
also wrote on the tape the drivers specs
just amazing that big order from Kawiboy
cant compile NarsilM there are bugs in the firmware Tom E needs to check
If it’s giving you trouble, then you can revert my order back to the original v1.2 with lvp. I’m fine with that.
very bad news I got here a lot faulty Atmel Attin85s
all on the last reflowed boards can be flashed only once,
after correcting temperature offset I want to flash em again,
but they all get me an error
I even took a brand new one out of the cut tape and flashed em, same problem
this affects one 22mm, 3 46mm and all the chips I have in the cut tape
Are you sure it’s the chips that are bad? Maybe there’s a problem occurring in the first flashing process that makes the chip not able to be re-flashed?
I did flash the other chips of that cut tape with identical settings with Narsil v1.4
I tested 3 chips of the new ones with the same error
I even did flash one of the ones I flashed before with temperature setting and it worked without any problem
I ordered 10 Attiny85 chips from another source here in Germany
NarsilM is also now ready to be flashed so I can do 6 30mm boards as well
so a lot orders are shipped
the first 2 or 3 ones were done shipping today, but then the rest will picked up Tuesday,
because the driver came who picks up the stuff from that post office came when I did the first envelops and filled out stuff for the othen ones
tracking numbers can be seen here
date of today 03. June 2017
and your RR tracking number
the tracking most likely will start when they get picked up Tuesday
