Valkyrie single sided surface mount stepper board
thingiverse
Redraw the Tinhead's Valkyrie stepper motor board (version 2.7) with surface-mount components for easier self-fabrication. This single-sided board communicates via I2C with the main board, as described in "DIY CNC Stepper Motor Control Board" on LetsMakeRobots.com. As it's a surface-mount design, an ISP header is included for programming and, for fun, a FTDI header is added. A second I2C header enables simple daisy chaining of stepper boards. This untested board requires all sockets and pin headers to be mounted from the bottom side opposite the surface-mount parts.
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