I’ve been using the new TinyAVR Series-1 chips (412, 416, 817, etc) in some recent designs, including my "smart" tailcap.
They’re pretty neat, but the difficulty is that pretty much all flashlight firmware up to this point is for the 13A / 25 / 85 chips. I wrote a new barebones NarsilM-inspired firmware for the Series-1 chips earlier this week. And last night, I converted Tom_E’s RampingIOS to run on them (not fully tested yet though). I hope to be designing a single-sided 5A linear driver around these chips pretty soon for the Emisar series (with the D1S + Flat White in mind). I want to confirm another design is working properly first (a 17mm single-sided linear 3A driver). I really like the single-wire debugging and programming that the UPDI provides. And it makes the “programming key” pad footprint smaller and more manageable. They have a lot of good peripheral options, too: internal VRef and temp sensing (which the 85 does have), RTC, TWI/I2C, 16-bit clocks, flexible low-power options, QTouch, etc.
AVRDUDE has added support for UPDI, but not in the published compiled versions yet. So if you want UPDI, you have to compile it yourself. I also ordered the JTAG programmer that El Tangas is working with, but also haven’t tested that yet. For now (until I get fully up to speed) with the Series-1 chips, I’ve been using Atmel Studio 7 for flashing, done via a ATtiny416 Xplained Nano dev board set up for off-board programming.
Whaaat? Who has removed the picture link in my above post? There Gimli was, asking an important question concerning the above referenced cheap knives who wouldn't have lasted even 5 minutes in Knife or Death. :-D
If you wanna check it out, click/tap (not safe for work ;-) warning).
The Manker Godmes was a Bluetooth controlled flashlight that responded to sound, or at least blinked to music. Ahead of its time. No longer in production, though. I just thought I’d mention a cool light most folks don’t know about.
One question. Do we have a driver available on BLF that would be able to drive 2x 3V or 6V leds (seperatly and/or together)?
Or 2x tripples with SST-20 leds (again seperate and/or together)?
Only gathering information at the moment.
The BLF lantern is two separate banks of 7135’s with a custom Anduril firmware that can do one channel or both channels combined to mix tint. I think Lexel even created a variation with a FET mode too but the current LT1 doesn’t have any FET.
So 2 channels but only with 7135 banks. The perfect driver for the thing i had i mind would have a 7135 chip for low on both leds and a fet for full power for both leds. So 4 channels in total. Would it be possible to do something like this with the attiny chips we usually use? Light would be a e-switch light (with lighted switch controlled by the mcu).
I am not sure if the attiny chips we usually use have enough output pinns for something like this
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