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Skot Croshere 2022-10-13 18:47:10 -04:00
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@ -5,9 +5,15 @@ an early-stage experimental bitcoin mining machine. Uses a single Bitmain BM1397
![BM1397 pic](doc/BM1397.png)
- The BM1397 is a undocumented SHA256 mining ASIC from Bitmain. It's mostly used in the Antminer S17
- Bitmain claims the BM1397 has 0.045j/Gh efficiency
- The BM1397 is available for around $20 each in low quantities from Aliexpress
- Bitmain claims the BM1397 has 0.03J/GH efficiency
- The BM1397 is available (new) for around $20 each in low quantities from Aliexpress
- I have seen some used BM1397 sellers; DYOR
- [HYG SRong](https://www.aliexpress.us/item/3256804436095856.html) -- $4.66 @ QTY 10 w/ shipping
- [BTC Zone](https://www.aliexpress.us/item/3256804305413883.html) -- $6 @ QTY 10 w/ shipping
- [punuo-ic](https://www.aliexpress.us/item/3256804576938680.html) -- $6.16 @ QTY 1 w/ shipping
- The BM1397 has the same footprint as the BM1387, but a very different pinout.
- It also has two "Modes" that change some of the signal pins around to make chaining easy
## Current Status
- I have not built up any or tested any of these PCBs yet. Parts and PCBs are supposed to arrive any day now..