New 105D. replacing Nanjg-105c @ FT? (no stars!)

ding ding ding :slight_smile:

http://www.aliexpress.com/store/product/Diameter-20mm-4Groups-AMC7135-8-Flashlight-circuit-board-Anti-reverse-output-current-3040mA/330416_32266600994.html

105e seems perfect for the off time cap…but it’s the 20mm version so watch out…

and 7135 38s!

I was wondering how they achieved such good spacing from the edge… 20mm explains it.

I ordered a couple of these to try from FastTech:

https://www.fasttech.com/p/1127403

8x AMC7135 generic driver with star-selectable mode groups:

A couple of interesting observations; the spring is much larger, making it much more useful than the factory spring on the 105c. Also, the above pic from FT doesn't show it, but the stars are printed in two pieces, so you just bridge the two halves to make your mode selection. I haven't installed one yet to check how the PWM, fit, and mode groups work out.

I’d sure like to see these sold with a threaded retaining ring narrow enough not to short-circuit components to ground.
Or — at least — specifying the inner diameter required for a retaining ring, to be used with the driver. And selling the rings.

ardvaark @ FT says that it’s not an ATtiny13A (pulled it off the board and USBASP wouldn’t play with it). - http://www.fasttech.com/forums/1127403/t/1002171/attiny-mcu

Yeah, you can see in the pictures that it's not an attiny. There are also cheaper ak-47 and ak-101 drivers out there that are nearly identical, except for the MCU. Apparently the "a" in ak-47a and ak-101-a stands for 'Atmel' or 'attiny'. When I was looking at having custom drivers mass produced, you can save about $0.50 per driver by using one of the cheap MCUs vs. an Atmel.

I don’t normally trust myself just eyeballing the package (although I do make a judgement). Thanks for the other info, that’s somewhat interesting. I’ve always wondered how Nanjg ended up using the more expensive part and riding it to that kind of success.

[quote=wight]

A shipment of Atmels fell of a truck perhaps? :wink:

Ack. Ordered 105c for 2 months and just looked at the pn to find it as a 105d.

I’d been planning on using another driver as an ultra low power led flashlight. No go with this one until I either reprogram it or figure something else.

Boss is gonna be annoyed… Promised him 10x led flashlights almost a month ago.

Anyone know of another good low power driver that I could get down to about 10ma or lower and no blink./pwm?

You haven’t mentioned what makes the 105d unsuitable for your purpose.

To get down to 10mA you would have to reprogram anyways, so what's the problem with the 105D?

boss likes to have stars on his drivers :smiley:

Epic reply:)

Actually I had planned on using the stars to get low mode only and then do the testing. But now I don’t have that option and I’ve got to order the new programmer… Assuming it can be. I haven’t even looked at the chip. Still trying to chase down why the other driver doesn’t lower the current after 10 ohms.

There was never a ‘low only’ star on either the 105c or 105d.

Did you mean to say 10 ohms? I can’t think of any situation where 10 ohms makes sense in this context!

105D can be reprogramed, I know because I ordered 5 x 105 C –8 AMC chips and 5 x 105 C 6 AMC chips and instead I received 9 x 105 D 8 AMC chips and 1 x 105 D - 6 AMC chips…
Stars are great soldering points if you use firmware for electronic switch which is what I neede them for :frowning: I can still use them with electronic switch but it is a realy realy PITA to solder wires directly to MCU.

Yep. I’m looking for a corny regulated driver with a sense resister that I calculated around 20 ohms. It isn’t working. So I’ve a new one now to figure out.

Just extra trouble I didn’t need in this job market.

Lol 20 ohms sense resistor :bigsmile: