| ??? 08/22/12 23:39 Read: times |
#188127 - answers Responding to: ???'s previous message |
The screen will either be ~8" or ~10". The initial one I had chosen ran on 3.3v. I had chosen 24v input to lower the input current, but I can easily drop down to 12v. I purposely stayed away from the screens with CFL backlights, as they take even more voltage to turn on.
But, the more I think about it and discuss it here, it would just be safer, easier, and cheaper to forget about the knob and do it in software on the screen. Then, with a capacitive touchscreen behind a clear cover molded into the enclosure, the only way for water to get into it would be if it physically broke open. Even then, with the low voltages and GFCI breakers on the input, it shouldn't be enough to harm anyone. |
| Topic | Author | Date |
| Designing a product for use in water | 01/01/70 00:00 | |
| Have you considered silicone coating? | 01/01/70 00:00 | |
| one link | 01/01/70 00:00 | |
| Waterproof enclosures | 01/01/70 00:00 | |
| Projective touch - or maybe waterproof tablet | 01/01/70 00:00 | |
| If that potentiometer wasn't a hard requirement | 01/01/70 00:00 | |
| more details | 01/01/70 00:00 | |
| You might want to look into that a bit further | 01/01/70 00:00 | |
| buttons for up/down gives tactile feedback | 01/01/70 00:00 | |
| nevertheless, a strobe wheel rather than a pot ... | 01/01/70 00:00 | |
| more good ideas | 01/01/70 00:00 | |
| Go to the lowest practical voltage | 01/01/70 00:00 | |
| answers | 01/01/70 00:00 | |
| Electric shock and intrinsically safe | 01/01/70 00:00 | |
| Isolators | 01/01/70 00:00 | |
| a question and a reference | 01/01/70 00:00 | |
| answers | 01/01/70 00:00 | |
| tethered unit?? | 01/01/70 00:00 | |
| mounted display | 01/01/70 00:00 | |
| have you considered a combination of battery and solar? | 01/01/70 00:00 | |
| indoor pool | 01/01/70 00:00 | |
Wireless chargers | 01/01/70 00:00 |