- The units are physically identical to PinIdea. The PinIdea's Raspberry Pi was custom fabbed and had a golden PinIdea logo on it, I would be interested to see if that is still present on the ZigMiner controller board.
- The specifications for the ZigMiner R1 is identical to the PinIdea RR-200/210, and not similar to any other Cryptonight miner on the market.
- The specifications for the ZigMiner D1 is identical to the power draw per-chip for the PinIdea DR 100 Pro.
- The firmware on the ZigMiner Z1/Z1+ has a few files that explicitly mention PinIdea, and the general structure of the firmware is identical to the firmware on the RR-200/210. The RR-210 used the same FPGA_download.sh file in /root to upload the bitstreams to the FPGA controller.
Where do you see these other zigminers that you mentioned? Does Dayun even have a website?