The ClockworkPi R-01 attempts to be compatible with the Pi 3 CM. It mostly succeeds but not 100% as the Pi 3 CM interface has some things that the D1 simply doesn't have, and the D1 has some things that the Pi 3 CM interface doesn't accomodate.
Sipeed now has at two RISC-V "compute modules" that follow the concept but don't attempt to be Pi compatible:
- LicheeRV module, Allwinner D1, same as the R-01, but with two side by side M.2 connectors as the interface. They sell a LicheeRV Dock for it.
- Lichee Module 4A, THead TH1520 SoC. Currently only available as part of Lichee Pi 4A, but they plan to sell the module separately, as well has a motherboard holding a cluster of 7 modules, a tablet, a laptop, maybe a phone. Uses a SODIMM connector.
In addition, Sipeed have a number of other lower powered RISC-V "module" products using K210, BL808, BL702. Most with circuit boards with castellated edges as the connector, some with some kind of edge connector. And some ARM ones too.
Sipeed now has at two RISC-V "compute modules" that follow the concept but don't attempt to be Pi compatible:
- LicheeRV module, Allwinner D1, same as the R-01, but with two side by side M.2 connectors as the interface. They sell a LicheeRV Dock for it.
- Lichee Module 4A, THead TH1520 SoC. Currently only available as part of Lichee Pi 4A, but they plan to sell the module separately, as well has a motherboard holding a cluster of 7 modules, a tablet, a laptop, maybe a phone. Uses a SODIMM connector.
In addition, Sipeed have a number of other lower powered RISC-V "module" products using K210, BL808, BL702. Most with circuit boards with castellated edges as the connector, some with some kind of edge connector. And some ARM ones too.