Difference between revisions of "Frameless Scale"
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==Goals:== | ==Goals:== | ||
| − | *Parts cost under $100. | + | *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. | *Can be built by 15 year old student (9th grader) using hand tools. | ||
*No soldering. | *No soldering. | ||
| − | * | + | *No lethal voltages. |
| − | |||
| − | |||
[[File:Chesick5.jpg|thumb|600px|End View with cover removed.]] | [[File:Chesick5.jpg|thumb|600px|End View with cover removed.]] | ||
Revision as of 03:25, 30 September 2014
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.
Design Features
- No frame: no welding, no bending.
- 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.
