Difference between revisions of "Frameless Scale"

From HiveTool
Jump to: navigation, search
(Goals:)
Line 14: Line 14:
 
==Design Features==
 
==Design Features==
 
*No frame: no welding, no bending.
 
*No frame: no welding, no bending.
 +
*Load cells are mounted in metal strut readily available from electrical or industrial suppliers in aluminum. galvanized or painted steel.
 
*Only straight cuts and drilled holes.
 
*Only straight cuts and drilled holes.
*Load cells are mounted in metal strut readily available from electrical or industrial suppliers in aluminum. galvanized or painted steel.
 
 
*Electrical connections are plugs or terminal blocks.
 
*Electrical connections are plugs or terminal blocks.
  

Revision as of 04:31, 30 September 2014

Finished rails (load cell mounts). Two go under the hive, one on each side.

Goals:

  • Parts cost under $100 and are readily available.
  • Low thermal drift and creep.
  • Low power consumption.
  • Automatically resume operation after power failure.
  • Can be built by 15 year old student (9th grader) using hand tools.
  • No soldering.
  • No lethal voltages.
End View with cover removed.

Design Features

  • No frame: no welding, no bending.
  • Load cells are mounted in metal strut readily available from electrical or industrial suppliers in aluminum. galvanized or painted steel.
  • Only straight cuts and drilled holes.
  • Electrical connections are plugs or terminal blocks.
Exploded parts diagram.

Material List

Parts Detail
Assembly
HX711 with terminals and Pi