Interested. 1 x 17. 1 x 20.
Changing R13, the 0402 resistor to 120k should give you 9v operation.
Sense resistor R1 would probably need to be changed also to some where in the 15mohm range.
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“Though she be but little, she is Fierce”
Interested in 2 of each. Thanks
Interested in 1 17mm and I would likely take a 20mm if you make it.
I’m not clear on what the firmware will be.
interested in 2 each of the 17mm and 20mm
Interested in 2x 17mm for now. Will there be firmware options to choose from? Or at least some decent default firmware??
Everything will be shipped with default firmware. I would like to see some devs in the community play around with it and write some of their own if there are people with that skill with arduino in here.
There is quite alot of potential with firmware.
Thank you. Where can I get more info on the default firmware?
And an update on pricing.
Ive got my initial quote in and component costs are just shy of $20 per board, so we are looking at $1962 total component cost for 100 boards and fabrication costs of the PCB and assembly.
We are not going to be much below $30 per board if at all by the time I get charged with import tax at my end.
Would like to feel out how much everybody is prepared to pay for a driver, and would need to fill in most of the orders before we go ahead.
If I cant get enough orders in, I may have to opt for a lower amount produced perhaps 50 boards, but this will likely increase the cost per board further.
See here:
and here:
Hope this helps.
Thank you
30$ for custom (almost one-off) and so powerful driver looks OK to me
You won't be seeing any similar soon... If it's easy for everyone to build one it would be done already
I’m in for one please if this is still open and happening
Guess I would need the fet switch too, doubt I can make one 
There is a difference between 1) the production costs, 2) the value of this driver: how unique is it compared to what is around, and 3) what I’m prepared to pay for it.
1) I do not know but you will find out, 2) I think as a custom driver that has unique performance it may be worth over 20 dollar, but 3) for my flashlight builds that is too much, I would pay between 10 and 15 dollar most.
So if under 15 dollar, I would like one 
Interested in at least 2 of each and fet tail boards, 4 or more of them
How much would you want to pay for a FET/tail board?
One unit requires 2 seperate boards, and that means 2 seperate sets of assembly setup costs.
For these boards, Ive been putting together the price of the components and its going to be at least $10 worth of parts per board.
Might be able to get the price down from the manufacturer in China, but we are easily looking at the best part of $20 per set of boards at a guess.
It would be much cheaper to just supply the boards for each person to assemble, its not that difficult to solder the SMD parts, just need patience and use tweezers and a fine tipped soldering iron.
If it's easier to assemble FET switch than driver then i could use 2 as well...
I have both of those items, and experience, and I am willing to give it a try. Age however has taken a toll on my eye sight and the steadiness of my hands so I lack a bit of confidence when SMD’s get too small
I’m gonna have to learn to do it sometime so I would go for parts.
Yup, its much easier to assemble this than the driver board.
If the soldering on the driver was that easy for the driver, I would do it myself too, the hardest parts to solder is the microcontroller and the temperature sensor IIRC.
I can probably get the costs for a pair of boards down to around $5 I think.
Will confirm later.