DIY Driver East-092 style (AMC7135 and DMG6968U)

I Like this as well :slight_smile:

Ooh, boy! Subscribed.

I look forward to a chance to combine this with Tofty’s 10a switch and Mattaus’s silver plated copper P-60.

Good to see some proper DD drivers. :slight_smile:

Forgive me if this is obvious to everyone else but me, Tivo532, are you going to make these and (A) offer them for purchase? (B) Show us how you did it and link us to where you sourced your parts? I think either or both A and B would be really cool.

:nerd_face:

Cool stuff, keep it up :slight_smile:

Looks interesting

With which layout program did you make the layout?
I started a similiar project with eagle but didn’t knew how to make a round PCB and the layout.
If a atmel mcu is used we could use drJones superb software like on a nanjg.

What is D2 good for?
I see no gate pulldown resistor to prevent the gate charging up?
Another thing texaspyro has told me is that we only get a small average current but the led sees spikes of the full current all the time.
Have you tested a mcu output direct to the led? Would this work as moonlight?

Hi Scotty,

Option B. It’s a DIY project and would like to share this to whoever are interested. Like an open source software. :slight_smile:
:beer:

Hi Werner,

1. I think he’s using Allegro but I’ll double check when I get back to work.
2. I used Zilog MCU as I’m familiar with it and like to do it myself(DIY). I was reading the forum when Ohaya ask me if can take a look at the East-092 problem they were seeing and did some experiments as posted in the OP. I’ll post here a video of the actual testing.
3. D2 was in the original East-092 and carried it over in the circuit. Discussion about this diode here.
4. Good one on the gate pulldown. I’ll add that to the circuit and re-layout the PCB.
5. Not sure what you meant by testing the MCU output direct to the LED.
6. Yes it works in moonlight mode. See original post.

:beer:

Here’s a video of the testing I did for the OP. I’m just showing here the changing modes from 3% > 35% > 100%.

The idea of building a driver like this has been a fantasy of mine for quite a while. I say fantasy because I have no idea how to start. Please, keep up the good work and post an instructional for how to do it when you have it dialed in.

not to go off topic but when finished as a open source software would anyone no where to send to get made ? id like to get some made and for u guys as well ?

Awesome stuff. Sadly, if this is DIY I’ll never get one. I just don’t have those skills.

if i find time to do some research and with the creator permeation ill try to find a company to make the board and just sell to who ever ?

My skills are fledgling but I figure that as long as I can get parts and a diagram or set of instructions usefull to a non-electrical engineer- then I will get better with each build. After a few burns and some less than ideal builds I’ll get it. I think it would be really something to assemble all on my own.

dct33, I’ll bet you have more skills than you let on.

I thought a direct connection from another mcu leg to the led, so that the mcu can drive the led by itself with some mA. That’s because the LEDs will see very short spikes of full current maybe 6A or so in moonlight. Which is not optimal and often these tiny controllers have more legs than we need so it came to my mind.

Thanks for the link with explanation of the anti parallel diode, I doubt it is necessary but as it is an additional protection it is quite nice.

What is with a battery protection?
Just a voltage divider, read out by the mcus adc like on the nanjg boards?

The FET with the smallest Ron I could find was the irl3803.

I talked with pilot last week and he too uses allegro, I have also the plan/wish to learn how to use this’s one day.

Nitro,

That would be great. Yes I can provide the bill of materials and procedure on how to program.

:beer:

tivo i sent u a pm about your driver

Any chance of somebody collecting all the assorted parts and selling them in kit form? Assembly is easy - smear some paste around, drop parts into place, hit it with some hot air - ordering small quantities of the parts that only cost so little from all over, seems like one person doing the ordering then reselling everything together would be much more efficient. ;)

once i hear back from tivo i might hear back on a quote on some boards :slight_smile: