Post
Topic
Board Hardware
Merits 3 from 2 users
Re: Open Source Bitcoin ASIC miner project that uses 2x BM1387 (Antminer S9)
by
n0nce
on 29/08/2022, 23:43:30 UTC
⭐ Merited by vapourminer (2) ,JayJuanGee (1)
I hope for a stand-alone-solo-miner with Esp32 as front-end.

That is the plan! Hopefully soon I can get something working.

Although I'm tempted to use the new Raspberry Pi Pico W (https://www.raspberrypi.com/news/raspberry-pi-pico-w-your-6-iot-platform/) instead of the ESP32
Hey Skot! I came up with a similar idea at the start of the year and had PCBs manufactured, but only recently got around to putting them together.
Compared to your design, it's a complete breakout board that provides access to all pins in 0.1" format, as I thought better having too many broken out pins than too few.


Anyhow; you beat me to uploading the whole thing and testing it out. Good job; I read that it's already working quite well, so far.
However I'm wondering what you use to supply the 0.8V at probably around 10A that those 2 chips should be pulling. My next step would have been to design a buck converter circuit. Do you just use a lab bench power supply?

I'm definitely interested in collaborating to maybe make this into a compact USB miner with integrated FTDI chip and buck converter (I have a lot of unused slots in my GekkoScience USB hub.. Wink).
Otherwise, I can see a pod miner with more than 2 chips being interesting, too, maybe targeting 95W so a standard quiet CPU heatsink could be used.