Thanks for the feedback! I was just wondering how people did what you describe in #6.
I wonder if there is a place to buy the convoy s3 retaining rings?
Why would you want to buy them separately? They don’t fit in anything else that I know of, and unless you lose one, any S3 host or complete light you buy should already have one.
Well yes, if they don’t fit anything else there is then no need. I was assuming that they would fit the other convoy s-series lights but i guess they do not.
this capacitor has the exact same specs and costs half of the Visay
dont make the mistake and populate C1 with 10uF, costed me over 2 hours to find this mistake
I tried to flash the Bistro HD OTC from the supplied HEX files
medium presses dont work
when I flash TA Bistro it works
can someone send me a hex that work OK?
I have a bistro-HD driver for testing now. After building a light and running some tests, maybe I can merge the code into the repository.
That would be very nice. Thanks!
Can someone help me choose if there is an MCU on this list that will work with OTSM?
I think this is OK but I’m not sure. Can someone confirm that?
I can buy from this site locally so I hope one of them will be good.
I'm pretty sure the one you listed will work but it's listed as no stock which seems to be the case everywhere for the 25V. I've used the 45V but it's also not in stock on that site. This is in stock and should work.
IIRC only the 45V has been tested to work. The 25v doesn’t offer the feature needed and the 85v is iffy on weather you get one that works but I have never tried HD myself so talking second hand here.
Sorry for the delay. I’ve had some distractions lately…
Anyway, I have a bistro-HD driver with tiny25v 10ssu and it appears to work. There is nothing on the OTC pads, but it is still able to do short/med/long timings while disconnected from power.
I should know more details soon, but it does at least appear to work with attiny25v.
I got problems to get 2S working with Attiny25V
2S/3S/4S is always tricky on drivers created primarily for 1S. The MCU needs its VCC capped by a zener or LDO, the MCU needs to read voltage through a divider, the 7135 chip(s) tend not to work, LVP tends to be more temperamental, components need to be rated for higher voltage, capacitors tend to drain at a different rate, the battery is more sensitive to differences between cells, etc. The problems might not be specific to the MCU type.
Not sure if this is the right place to post this, but I think I’ve found a bug in the bistro-HD code.
In the classic configuration (OTC, no OTSM, no E-SWITCH) , it seems that the wake_count_med and wake_count_short variables are being set to their OTSM values (as defined by wake_time_short and wake_time_med) instead of their proper OTC values (as defined by CAP_MED and CAP_SHORT). It seems the proper undefs / redefs appear in the code in the wrong place and aren’t getting picked up correctly and should be put at the top along with the other defines.
The result of this bug is that in the OTC configuration it is nearly impossible to “medium press,” since short press is set to ~6 and medium press is set to ~9. Short press works ok but is very short as a result.
I’d be more than happy to submit a patch if you guys accept those?
Patches are awesome! If you have one, please send it. 
Also, thanks for the reminder. I think I forgot … again … to merge BistroHD into the main repository. I tested it on an OTSM driver KFulton sent me (thanks again for that!) and it worked, but then life happened and I don’t think I ever got back to it.
Edit: Bistro-HD is merged and uploaded to the trunk branch. If you don’t mind using Launchpad, merge proposals there are always welcome. Otherwise, I can also take pretty much any other type of patch.
I’m having trouble figuring out how to get Bazaar set up, so here’s a patch for bistro-HD.c instead.
Everything compiles that I’ve tested, but I can’t guarantee it doesn’t break other configs :P.
Hey folks, I feel a little bad abandoning this thread. It look like others have given it a little life, maybe even the originator of it all TK herself. I'll see if I can catch up soon.
I got one problem with 2S OTSM drivers with the 17mm TA board LDO I got it working
but with 22mm other LDO its not working at all
Cool, I'm a little surprised someone tried to get 2S working at all, I mean it should have worked though. I wrote up some details in the manual didn't I? It's actually been awhile since I thought about it, but I think it needs pretty tight tolerances on the resistors. Maybe tolerances and variation are the issue. I wouldn't think there is any difference in the 17mm and 22m. Do you know of any difference in the circuit for the two? Is it just the number of 7135's?
This is a good point for patching HD. You mean you tested compiling all the provided build configurations, just not with every conceivable config permutation? That's probably pretty good. It's good with changes to HD to run the full build process to see if everything still builds. If it does, it's some good assurance that the patch didn't break any of the config options permutations. This was a big part of the work in HD actually was cleaning up a bunch of older config options that had become incompatible and making them all compatible again.