If you start with a brand new Execute board you’ll need to solder wires for the power supply and motor (Preparing the FlexSEA-Execute 0.x board (Hardware)). Any AWG16 wires can be used, but we typically use high-flex wire. The connectors you use depend on your requirements. For our prototypes we often use Anderson Powerpole® Stackable Connectors with 15A contacts (we buy them from Powerwerx). Hobby/RC style Bullet connectors can also be used.
To program the board you’ll need a MiniProg (CY8CKIT-002 PSoC® MiniProg3 Program and Debug Kit, 83$ on Digikey) and a ProgAdapt. To connect to your computer use a USB Micro-B cable.
To program the board you’ll need an ST-Link (ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32, 22$ on Digikey) and a ProgAdapt. To connect to your computer use a USB Micro-B cable.
Both Manage & Execute use the same Molex Pico-Clasp™ connectors. The connectors and crimps are dense (1mm pitch), easy to use, support 1A per contact, and are economical (Digikey part numbers: WM7931-ND & WM10136CT-ND). The only issue with them is the expensive tool needed to crimp the wires: Molex 63819-1500 (296$ at Mouser, 345$ at Digikey). Please let us know if you find a cheaper alternative for this tool.
Full 63819-1500 datasheet (includes details about how to use the tool)
For wire I like to use the 6710 series from Alpha Wires, also available at Digikey.