RISC-V development boards. Check out Wikipedia RISC-V
Seeed Studio 107990153 - Sipeed I2S Mic is a mini size single MEMS microphone that can be connected to MAIX development boards Dock/Go/Bit as well as the Sipeed Binocular camera easily. it's high sensitivity, low Noise and cost-effective.
Seeed Studio 114991702 - Sipeed Binocular camera module is a camera expansion board for Maix AI development boards designed for AI and Binocular stereo vision applications. It supports Binocular stereo vision and depth vision.