Q8 modding

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Thanks, ordered 5.

Will any type of solder paste do? Or is there a special types for hot leds?

TomE would you please check your PMs. It’s been over 11 weeks since your last response indicating you were finished modifying my q8. Thanks in advance

May I introduce BLF Q8 Janus:

2 Heads, one white, one with red, green, blue and amber LEDs, heads and color LEDs individually controllable.

The modified MCPCB with XP-E2 color LEDs, and my driver which is used in both heads. In the white head populated with FET + 7135, in the color head populated with 4 x 7135 for each LED. MCU is Attiny 841. Full ramping UI of course. The reflector bottom had to be grinded a bit to make room for the outer LED wire pad. Reversed MCPCB polarity (batt+ at the outer trace to keep grinding at a minimum).

Cut a solid 6mm brass rod and soldered a spring on one end in order to bring batt+ to the rear head. Used tape to isolate the rod and drilled a hole in the tail PCB.

The threads at the rear end of the battery tube are too short to reach the driver board so I made cut outs (for the PCB screws) to a copper ring and put this ring above the PCB.

Btw., this is how I program my Q8 drivers:


Excellent work! I love it! :heart_eyes:

:+1:

UV might been also a good 4. color

What MCU are you using?

That is very impressive Flashy Mike!!! :+1: … :beer:

Attiny 841 with 6 PWM channels which can almost freely be assigned to 8 output pins.
Yes, I was also thinking of UV but not with this light since it will also be used by my children. If I use UV in an other multi color light I probably will add some security code into the firmware to avoid unintentional activation.

I decided to ‘Foybezel’ my Q8s. :partying_face:

I used a belt sander with a 40-grit belt, an orbital sander with a 120-grit disc, and a few minutes of hand sanding with 180-grit and 400-grit laid on a flat surface.

I also applied some thin strips of adhesive vinyl between the fins to tell them apart.



Nice job goshdogit. They all look very neat. :beer:

Very nice.

Very cool Flashy Mike and goshdogit

no modding for me.

I wanted to do a spring bypas. First investigated the screws. The head srews are ok, but the tail pcb screws, one of them has a bad notch(? ), (there were the screwdriver goes in) so i can’t open this screw. I have no solution, mabey one of you got an option?

Here are ways to remove a stripped screw:

https://www.ifixit.com/Guide/How+to+Remove+a+Stripped+Screw/13213

Thanks, i’m going to need dremel for this

Before you do that I would recommend ordering some replacements of higher quality and less resistance so that way at least you have a working light until those come in. Also, you will have a few hundred more lumens with the replacements since you plan on bypassing anyway.

thanks

Received my first Q8 last week. Overall Build was great. Tail end-Screws for the PCB board were not stripped. the holes were already chamfered. Head end-screws for the driver looked fine. the holes in the driver looked bigger than threaded holes so i didn’t have to oversize them. it was oily on the other side. just gave it a wipe. the annodization on the threads on the tube and head were thin and some spots worn out. it was a little gritty as well. that is the only negative about the entire light. Cleaned and re lubed. nice and smooth now. Love the ramping UI. The only mod i have done is the tail spring bypass. Would love to have TK’s UI with Lightning/candle mode. not interested in buying parts for flashing as i am not a avid modder.
long shot but anyone happen to live in Calgary, Alberta that flashes lights?