Difference between revisions of "Darkroom Ratio Calculator"
From Hackstrich
(Created page with "Calculating ratios in my head when mixing/diluting chemicals in the darkroom is hard, so I want to build a box to do it for me. == Project Status == == Overview == * Input is r...") |
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Revision as of 14:18, 8 December 2014
Calculating ratios in my head when mixing/diluting chemicals in the darkroom is hard, so I want to build a box to do it for me.
Project Status
Overview
- Input is rotary encoders
- Output is 7 segment LED displays
- Unit will have a light sensor and dim the displays so they're safe when the lights are turned off
- "Fields" are:
- Ratio Component A
- Ratio Component B
- Value Component A
- Value Component B
- Total Value
- All fields will be settable, you set the ratio components and either one value component or the total, and it figures out the other two values
- Should have a way to round the values too? Mixing 67.2ml of liquid is a pain
- If it has a way to round, it might need an Error % display or something like that, since it would no longer be exact?
