RUG/Pennsylvania/State College/Electronics

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Alternate Electronics

One of the goals of our program is gaining the ability to produce RepRaps to distribute to other groups at the university. To do this we need to bring build costs as low as possible. To this end, we are researching alternate electronics systems in hopes of finding one which we can produce ourselves, without needing to purchase kits or completed boards from third parties. This section serves as an index for that research.

Requirements

  • Heated bed support
  • Multiple head support
  • Themistors
  • 2 Z motors
  • protected outputs

Would be nice

  • High step count
  • SD Card support
  • Control panel (computerless)

Repairs and Modifications

As we continue to maintain our existing machines, we will undoubtedly need to repair and modify their electronics. This section will document our efforts in this area.

Repairs

Modifications


Differences between alternate electronics

Sanguinololu

Pros

  • 7-30v
  • 2 thermistor
  • will do prussa
  • 2 n mos for extruder or for the bed
  • uart1
  • i2c
  • spi
  • 1 pwm
  • 5 analog i/o
  • mostly through hold components

Neutral

  • sdcard support is talked about but isn’t really visible
  • usbttl needed
  • prusa ok

Cons

4 popolu board’s stepper only


Generation_7_Electronics

Pros

  • slightly faster 25%
  • can run heated bed off board
  • usbttl needed
  • 2 thermistor 1 for tip 1 for bed
  • prusa ok

Cons

  • also 4 boards 1/16 steps


Ramps

Prices & Details

Pros

  • allows additional arduino shields, like Ethernet...
  • not really self etch able
  • i2c
  • spi
  • 5 polo boards
  • heated bed control 11 amp fuse
  • prusa ok
  • no usb adapter needed

Cons