When you have to use small SMD (surface-mount) chips and there are no ready to use breakout boards to be used with HCSCI interface, you can easily make them yourself, quickly and cheaply, without the need to make or order PCBs for each device.
All you need is to buy a very useful cheap “adapter” board for small SMD integrated circuits (having a surface-mount package). These cheap boards (about $ 0.1 for piece) will help you work comfortably with SMD chips. You need to have just basic soldering skills and few minutes.
Here is an example of using this board for STI6606Z stepper driver chip. I’ve a got very convenient 4-stepper module for less than $2:
For connections you can use pin headers, socket headers, 4-contact jacks for steppers, or you can simply solder wires to the board pads directly (this is the most reliable connection).
Here, two 14-pin headers were used with this module to insert it into a small breadboard. You can even stick these small breadboards anywhere in your home cockpit – they have peel-and-stick adhesive backing (or can have two mounting holes for screws).
When using this board for stepper motor drivers I highly would recommend you to solder all 4 wires from each of 4 motors directly to the board pads, not using any connectors. This will be the most reliable connection for your stepper gauges. Another 4 wires you can solder to the control (STEP) pads an make a 4-contact header to connect with the stepper controller board. Dont forget about GND and power (+5v) and common DIR signal.
SOP/SSOP Adapter board
Here are some links as examples for reference:
It can be used for any SMD chips that may have 8…28 leads, for example, if you have 16-channel SM16126D LED driver in SMD casing (see links below). Unused pads on the board can serve for additional components – resistors, capacitors, etc.