Could someone here do me a favor? Please remind Neal that I still don’t have the two GT Micro’s I paid $90 for and the Fireflies E07 he sent instead is still sitting here waiting for his response from a month ago.
Thank you.
I’m planning to mod one with Nichia 219B sw40 as well, so I’m also following closely on the discussion about disabling the fet. Can it just be a setting instead of hard coded into the firmware?
219B sw40 can handle the turbo on my FW3A just fine when using a somewhat used Sanyo GA. The tint is much less pink in relation to other modes than with some other 219B lights on turbo, such as E07 and ROT66 with more potent batteries.
Thank you Tatasal, Neal sent me a PM and reports that he will send GT Micro next week. Now I get to see if he sends one or the two I actually ordered. Life is a mystery, flashlights make it an illuminating experience.
This is my second proper group buy and the unfortunate thing that really stands out for me is that by the end of these projects some people are really really mean, and for no reason.
Being in SA I’m hoping the courier is reasonably fast
219B sw40 can handle the turbo on my FW3A just fine when using a somewhat used Sanyo GA. The tint is much less pink in relation to other modes than with some other 219B lights on turbo, such as E07 and ROT66 with more potent batteries.
This. People have made dozens of 219b fet triples not sure why the sudden concern with a mid drain battery?
I’m fairly new to modding lights, managed to find some sw45ks, and just don’t want to take any chances with them.
Forgive any ignorance, but wouldn’t a new, fully charged, Sanyo GA still pose a risk? It’s rated at 10A, which is over the maximum current when split over three LEDs. Please let me know if this is way off base.
Forgive any ignorance, but wouldn’t a new, fully charged, Sanyo GA still pose a risk? It’s rated at 10A, which is over the maximum current when split over three LEDs.
That’s not how it works. The 10A rating for the GA is the maximum safe continuous discharge current for the battery as rated by the manufacturer. It’s a safe operating limit, not the maximum possible current. A dead short would produce many times that current, probably until the cell got hot enough to be limited by its internal PTC thermistor, or until gas is produced, triggering the current interrupt device and permanently disabling the cell. If you’re unlucky, neither happens and it enters thermal runaway and explodes.
Current through a FET driver light is determined by three things:
The forward voltage curve of the LED. Here’s a test of the 219B R9080 with a forward voltage plot. Note the peak output of 700 lumens occurs at 4.0A, well in excess of the rated maximum, which requires 3.3V.
The resistance of the circuit, including any springs, leads, traces, and the FET itself.
The internal resistance and resulting voltage sag of the battery.
If the actual current is 10A or less, which seems likely with 219Bs and a GA in this light based on my experience with other FET driver lights, it will be fine. Most LEDs can take far more current than they’re rated for without acute damage, but with more than 3.0A per 219B, almost all the energy goes in to producing heat rather than light.
—
Ceilingbounce – flashlight testing and runtime graphs for Android
People have made dozens of 219b fet triples not sure why the sudden concern with a mid drain battery?
If I recall correctly, the old 219B emitters may have had higher Vf than the more recent ones, so the more recent ones are more prone to turning into smoke.
But mostly, I think it’s just because people are more concerned with general safety now, after reports of some Fireflies lights damaging their 219B emitters.
So… I’ll just make a 219 build for the FW3A firmware. It could either have the FET turned off entirely (max output of ~800 lm), or it could have the FET levels decreased to like 25% or 33% or 50%. Not sure which would be better.
People have made dozens of 219b fet triples not sure why the sudden concern with a mid drain battery?
If I recall correctly, the old 219B emitters may have had higher Vf than the more recent ones, so the more recent ones are more prone to turning into smoke.
But mostly, I think it’s just because people are more concerned with general safety now, after reports of some Fireflies lights damaging their 219B emitters.
So… I’ll just make a 219 build for the FW3A firmware. It could either have the FET turned off entirely (max output of ~800 lm), or it could have the FET levels decreased to like 25% or 33% or 50%. Not sure which would be better.
TK. You’re the best! BLF wouldn’t be what it is without ya!
So… I’ll just make a 219 build for the FW3A firmware. It could either have the FET turned off entirely (max output of ~800 lm), or it could have the FET levels decreased to like 25% or 33% or 50%. Not sure which would be better.
Nice! I’ve got a 219B triple board waiting for my FW3A.
I’ve been tempting fate with 219B emitters in a D4. I have the ramp ceiling turned way down and mostly use it on lower levels, but I’ve run it on turbo for a few seconds a handful of times.
Will the FET % be a compile option, or something you determine during testing? BTW, I’ll gladly send you a 219B sw45k R9080 triple board if you need/want one for your FW3A.
I would really like it if the ramp has an indication of when it goes from regulated to hybrid modes like the Emisar D4 standard UI. Or if there’s a pre-defined percentage indication in a leaflet that allows one to adjust the ramp ceiling to max regulated current, leaving turbo for full FET.
Would this be possible?
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Acebeam L18, Armytek Prime C1 Pro, Armytek Prime C2 Pro, Armytek Tiara C1 Pro, Astrolux MF01 Mini, BLF Q8, BLF A6, BLF FW1A, BLF FW3A, BLF FW3C, BLF LT1, Convoy L6, Convoy C8+ , Convoy S3, Emisar D4, Fireflies E07, Jaxman E2L, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Olight Baton 3, Olight Warrior Mini, Olight M2R Pro Warrior.
Nice! I’ve got a 219B triple board waiting for my FW3A.
I’ve been tempting fate with 219B emitters in a D4. I have the ramp ceiling turned way down and mostly use it on lower levels, but I’ve run it on turbo for a few seconds a handful of times.
Will the FET % be a compile option, or something you determine during testing? BTW, I’ll gladly send you a 219B sw45k R9080 triple board if you need/want one for your FW3A.
The FET percent is generally just a hardcoded thing. I’m just not sure yet what percent it should be. I’ll probably put in a few options which can be selected at compile time, and make the default build something relatively safe. I definitely can’t turn down a 219B triple board though; those are hard to get these days.
I would really like it if the ramp has an indication of when it goes from regulated to hybrid modes like the Emisar D4 standard UI. Or if there’s a pre-defined percentage indication in a leaflet that allows one to adjust the ramp ceiling to max regulated current, leaving turbo for full FET.
Would this be possible?
It’s too late to change the firmware now, but fortunately that function is already included. It has a brief blip in the ramp when it changes power channels.
About the actual ramp shape, those values are in the config file. They’re also in the user manual.
It is confirmed here in the thread there is no bunny on the GB lamps.
I also mailed Neal and he said no bunny.
After the group buy there will be one on the tail.
In for 1, please!
Could someone here do me a favor? Please remind Neal that I still don’t have the two GT Micro’s I paid $90 for and the Fireflies E07 he sent instead is still sitting here waiting for his response from a month ago.
Thank you.
You never know how a horse will pull until you hook him up to a heavy load./"Bear" Bryant
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I would hope he is following this thread, and that should be a reminder, but if you are waiting for a response from a month ago, I’m probably wrong.
Please add me for 2. Thanks!
Please add my name for two.
Thanks,
I’m planning to mod one with Nichia 219B sw40 as well, so I’m also following closely on the discussion about disabling the fet. Can it just be a setting instead of hard coded into the firmware?
219B sw40 can handle the turbo on my FW3A just fine when using a somewhat used Sanyo GA. The tint is much less pink in relation to other modes than with some other 219B lights on turbo, such as E07 and ROT66 with more potent batteries.
Thank you Tatasal, Neal sent me a PM and reports that he will send GT Micro next week. Now I get to see if he sends one or the two I actually ordered.
Life is a mystery, flashlights make it an illuminating experience. 
So looking forward to this reaching fruition!
This is my second proper group buy and the unfortunate thing that really stands out for me is that by the end of these projects some people are really really mean, and for no reason.
Being in SA I’m hoping the courier is reasonably fast
Put me down for a 3rd light, please. I decided to get one for a friend, too.
Thanks!
Originally I thought just one of these would suffice. I don’t know what I was thinking… I am in for a second one!
Original interest request – 356.
Please put me down for one. Thanks
Please add me to the list for 2 more lights please.
Just to clarify for people in the FW3A group buy, this battery does not fit into the FW3A. It’s completely unrelated.
Please add me to the list for one flashlight please. Thanks.
This. People have made dozens of 219b fet triples not sure why the sudden concern with a mid drain battery?
I’m fairly new to modding lights, managed to find some sw45ks, and just don’t want to take any chances with them.
Forgive any ignorance, but wouldn’t a new, fully charged, Sanyo GA still pose a risk? It’s rated at 10A, which is over the maximum current when split over three LEDs. Please let me know if this is way off base.
Mike
That’s not how it works. The 10A rating for the GA is the maximum safe continuous discharge current for the battery as rated by the manufacturer. It’s a safe operating limit, not the maximum possible current. A dead short would produce many times that current, probably until the cell got hot enough to be limited by its internal PTC thermistor, or until gas is produced, triggering the current interrupt device and permanently disabling the cell. If you’re unlucky, neither happens and it enters thermal runaway and explodes.
Current through a FET driver light is determined by three things:
If the actual current is 10A or less, which seems likely with 219Bs and a GA in this light based on my experience with other FET driver lights, it will be fine. Most LEDs can take far more current than they’re rated for without acute damage, but with more than 3.0A per 219B, almost all the energy goes in to producing heat rather than light.
Ceilingbounce – flashlight testing and runtime graphs for Android
So sorry for that. l carelessly posted it here, originally intended for the FT03 (which can use a 26650) gb thread:
If I recall correctly, the old 219B emitters may have had higher Vf than the more recent ones, so the more recent ones are more prone to turning into smoke.
But mostly, I think it’s just because people are more concerned with general safety now, after reports of some Fireflies lights damaging their 219B emitters.
So… I’ll just make a 219 build for the FW3A firmware. It could either have the FET turned off entirely (max output of ~800 lm), or it could have the FET levels decreased to like 25% or 33% or 50%. Not sure which would be better.
Thanks for the explanation, zak. I need to brush up on my electronics. It’s been a while.
And, thank you, again, TK.
Mike
TK. You’re the best! BLF wouldn’t be what it is without ya!
I’ve been tempting fate with 219B emitters in a D4. I have the ramp ceiling turned way down and mostly use it on lower levels, but I’ve run it on turbo for a few seconds a handful of times.
Will the FET % be a compile option, or something you determine during testing? BTW, I’ll gladly send you a 219B sw45k R9080 triple board if you need/want one for your FW3A.
Time to jump…
Please add me to the list for one !
Thanks
I’m interested in one.
I would really like it if the ramp has an indication of when it goes from regulated to hybrid modes like the Emisar D4 standard UI. Or if there’s a pre-defined percentage indication in a leaflet that allows one to adjust the ramp ceiling to max regulated current, leaving turbo for full FET.
Would this be possible?
Acebeam L18, Armytek Prime C1 Pro, Armytek Prime C2 Pro, Armytek Tiara C1 Pro, Astrolux MF01 Mini, BLF Q8, BLF A6, BLF FW1A, BLF FW3A, BLF FW3C, BLF LT1, Convoy L6, Convoy C8+ , Convoy S3, Emisar D4, Fireflies E07, Jaxman E2L, Manta Ray C8.2 long version, Olight S1R Baton II special edition series, S2R Baton II, Olight Baton 3, Olight Warrior Mini, Olight M2R Pro Warrior.
Most of them have been modded! =)
https://photos.app.goo.gl/JaJaDv4V838AEJf39
The FET percent is generally just a hardcoded thing. I’m just not sure yet what percent it should be. I’ll probably put in a few options which can be selected at compile time, and make the default build something relatively safe. I definitely can’t turn down a 219B triple board though; those are hard to get these days.
It’s too late to change the firmware now, but fortunately that function is already included. It has a brief blip in the ramp when it changes power channels.
About the actual ramp shape, those values are in the config file. They’re also in the user manual.
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