Description Unit Mini Proto is a compact 40-hole universal prototyping board in the M5Stack Unit form factor. The Unit Mini Proto lets you freely design small circuits on the board and connect them to M5Core through the HY2.0-4P Grove port. When a project needs a simple custom circuit with a protective case, the Unit Mini Proto provides a quick prototyping base. Different HY2.0-4P ports can expose different ESP32 pins, so the Unit Mini Proto can be wired for PORT.A, PORT.B, or PORT.C circuit connections. Features Unit Mini Proto compact universal board with 40 prototyping holes. HY2.0-4P Grove interface for connection to M5Core. Supports PORT.A, PORT.B, and PORT.C ESP32 pin connection options. Two LEGO-compatible holes for mechanical mounting. Small 32.0 x 24.0 x 8.0mm form factor for embedded circuit experiments. Suitable for simple add-on circuits that need a protected Unit-style enclosure. Specifications Specification Parameter Interface HY2.0-4P Grove Prototyping Area 40 holes Mounting 2 x LEGO-compatible holes Product Size 32.0 x 24.0 x 8.0mm Product Weight 3.0g Package Size 136.0 x 92.0 x 10.0mm Gross Weight 15.0g Applications Unit Mini Proto prototyping for small custom circuits. Simple sensor, signal, or interface add-on experiments. M5Core projects that need a compact Grove-connected circuit board. Mechanical builds that benefit from LEGO-compatible mounting holes. Product List 1 x Unit Mini Proto 1 x HY2.0-4P Grove Cable (20cm) Other Content PORT Pin Options Port ESP32 Pins PORT.A G21, G22 PORT.B G36, G26 PORT.C G16, G17 Design Use The Unit Mini Proto is intended for quick circuit layout, soldering, and signal routing inside a small Unit-style board. It is most useful when a prototype needs direct access to Grove wiring while staying compact enough for a protected enclosure. Resources Mini Proto product document Mini Proto schematic PDF Mini Proto schematic image Mini Proto model size PDF Mini Proto model size image Mini Proto PDF document FAQ What is Unit Mini Proto used for? The Unit Mini Proto is used for small custom circuit prototypes that need a compact board and Grove connection to M5Core. How many prototyping holes does Unit Mini Proto provide? The Unit Mini Proto provides 40 prototyping holes for building simple circuits. Which ESP32 pins can Unit Mini Proto connect to? Depending on the port, the Unit Mini Proto can connect to PORT.A pins G21/G22, PORT.B pins G36/G26, or PORT.C pins G16/G17. Does Unit Mini Proto support mechanical mounting? Yes. The Unit Mini Proto includes two LEGO-compatible holes for mounting in structured builds. What is included with Unit Mini Proto? The package includes 1 x Unit Mini Proto and 1 x HY2.0-4P Grove Cable (20cm).