Recent content by RV7
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Sold/Expired Closed: Microprocessor controlled drivers Part 2
Re: FS: Microprocessor controlled drivers Part 2 Hi Alex, right now I've no plan resuming the 3.7V project. Scattergun, to bypass the microprocessor, you can simply resolder the white (negative) wire to the copper ring along the rim of the board. The microprocessor still takes a few...- RV7
- Post #5
- Forum: Sold/Expired/Completed
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Sold/Expired Closed: Microprocessor controlled drivers Part 2
Continued from here. These drivers focus on performance. The PWM frequency is over 5KHz so there's absolutely no noticeable flickering. The microprocessor uses "on" time to control mode switching - if you turn it off within 2 seconds since you turned it on, then it will be in the next mode...- RV7
- Thread
- Replies: 10
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Yes they're identical, except for a different UI. The text says 17mm but the picture shows a 16mm one. Both sizes should be available if you ask DX I guess. Things don't always go as planned...- RV7
- Post #347
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** 2xb shipped to Scott today.- RV7
- Post #328
- Forum: Sold/Expired/Completed
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New Q5 and existing drivers
Just saw that some of the Q5's StefanFS got have a 3.9-3.99V Vf at 800mA! Doesn't sound great...- RV7
- Post #4
- Forum: LED Flashlights
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New Q5 and existing drivers
Thanks for the link. What a relief... and let's keep upgrading!- RV7
- Post #3
- Forum: LED Flashlights
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New Q5 and existing drivers
Has anyone measured the Vf of the new high bin Crees? I haven't got any Q5's yet myself. But I heard the Vf of the new Crees is pretty high. At 1A the Vf of a Q5 can be as high as 4V. If that's true, most existing buck drivers for single li-ion and many boost dirvers won't work well with the...- RV7
- Thread
- Replies: 5
- Forum: LED Flashlights
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** Following orders have shipped: leeleefocus 1xa + 2xb ROK 2xa- RV7
- Post #326
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** Hi Stefan, This driver is not a conventional booster. It works like a highly efficient transformer. It's the battery's capability that's limiting its output. However, with two AAs and one LED, the load on the batteries...- RV7
- Post #325
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** The LED current should be close to 1.1A and the efficiency around 75%. From time to time I come across an energetic driver with higher than normal output.- RV7
- Post #323
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** Maybe DIY one with a couple links from someone's necklace? :devil: I heard a crazy guy making a positive contact on the back of his driver PCB this way to be able to use protected batteries...- RV7
- Post #322
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** Twisty... that's a good idea! The equivalent input impedance of the driver is only about .3 ohm. Throw in a 0.1 ohm switch and you're bound to see a big difference. I wander where we can buy high quality clickies, those...- RV7
- Post #318
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** rantanplan, thanks for the detailed update!- RV7
- Post #315
- Forum: Sold/Expired/Completed
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Sold/Expired FS: Microprocessor controlled drivers
Re: FS: Microprocessor controlled drivers **1AA boards available now** Thanks guys. Scattergun... yes you can! :D rantanplan, glad you got it so fast. Well, even the bins are different, I'm still a little surprised that your modified L1P P4 doesn't beat that L1D Q5, because with a new L1D...- RV7
- Post #313
- Forum: Sold/Expired/Completed
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TranquillityBase Ti AA-powered light.
Re: TranquillityBase Ti AA - *More* Updated Runtimes 8/24/07 John, now you get the lower low with the new 3-level version. TB should receive his next week.- RV7
- Post #25
- Forum: Homemade and Modified Flashlights Discussion
