RDB-STP-001-G-DIY

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RDB RDB Build Documentation
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RDB Reprap Development Board

Release status: experimental

RDB STP 001 G DIY.jpg
Description
Generic development board extension for 3D printing
License
Author
Contributors
Based-on
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CAD Models
External Link



Features Overview

This board is meant to take GPIO wires from the development board and provide support components for pololu stepper drivers.As the logic voltage regulator is continuously adjustable, the board can work at a logic voltage of 5v or 3.3v or else. Board features:

-Voltage regulator: 1 (adjustable, for logic level)

-Headers to accomodate pololu drivers: 5

-Pcb size: two types of routing, 42x215mm (inline) and the other more compact 112x80mm

-optimized for DIY: single sided, no bridges, clearance 0.5mm, min track width 1.5mm, format and traces "bulky" enough so board could be made with any technique.

Power input

  • simple reverse polarity protection with high current diode and fuse
  • transient supressor
  • max input voltage depends on the regulators used

Voltage regulator

  • one continuously adjustable voltage regulator
  • multiturn adjustment pots (3296Y)
  • voltage regulator is 3 terminal type, TO-220 package, e.g.: LM317 LM1086, and similar pinout compatibility (TO220 with middle pin Vout)
  • first regulator purposed for logic voltage for the board and should be set accordingly: 5v or 3.3v. Ideally this should be set to match closely the development board's logic voltage.

Stepper drivers

  • This board is meant to works with pololu drivers, currently using A4988 or DRV8825 stepper driver ICs.
  • For further documentation on pololu drivers is available on pololu website.
  • May work with similar drivers which share this footprint.

Source files

Download as PDF file: Schematic , Layout for inline version or Layout for alternative routing

Kicad source files: download Kicad files - version 001a - last updated: 2013 May

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