ESR

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The ESR is our leading unenclosed desktop printer.

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Technical Data

Technical specifications and accessory compatibility for printers currently shipping are detailed in the comparison chart on the Printer Overview page.

History

  • The Engine was introduced during our 2012 Kickstarter campaign with five different configurations:
    • E1 Tinkerer: one filament head, no heated bed, no computer
    • E2 Hobbyist: one filament head, heated bed, no computer
    • E3 Apprentice: one filament head, heated bed, computer - this became the standard model after the Kickstarter
    • E4 Journeyman: two filament heads, heated bed, computer
    • E5 Professional: four filament heads, heated bed, computer
  • The ESR (Engine, Standard Resolution) name changed in 2016 to avoid confusion with the new EHR (Engine, High Resolution)
  • The ESR v2 is introduced equipped with better motors with closed-loop feedback and quieter operation. CE marked units are available upon request.

Internals

Here is an explanation of the internal electronics of the ESR; click any images for larger versions:

Tablet Interface Board

Tablet Interface Board (with STM407 Motion Controller) has Internal and External Ports.

The current board, circa 2021.

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Spine Board

The Spine Board has Axis Control Internal and External Ports.

The new board, circa 2021.

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The original board, most recent revision.

Spine orig.jpg