Timeline for Is a 5.5V to 15V GPIO a suitable controller for a 120V/30A relay?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Mar 10, 2015 at 18:10 | vote | accept | tmsimont | ||
| Mar 10, 2015 at 17:05 | comment | added | Peter Bennett | Also, the inputs to the microcontroller must be limited to 5 volts. | |
| Mar 10, 2015 at 17:04 | comment | added | Peter Bennett | Yes - the maximum output voltage from the micro will be 5 volts, but you will probably need to use that to drive a transitor to handle the current needed to drive the relay. | |
| Mar 10, 2015 at 16:20 | comment | added | tmsimont | so that means I should expect no more than 5 volts coming out of thie I/O pins, yes? And therefore I need a relay that has a 5V coil? | |
| Mar 10, 2015 at 16:12 | comment | added | Peter Bennett | Note that the A-Star 32U4 Micro board can be operated from 5.5 to 12 volts, the microcontroller itself is operated from a regulated 5 volts generated on the board, so the voltage on its I/O pins must be limited to 5 volts. | |
| Mar 10, 2015 at 15:55 | answer | added | Ignacio Vazquez-Abrams | timeline score: 1 | |
| Mar 10, 2015 at 15:52 | review | First posts | |||
| Mar 10, 2015 at 15:58 | |||||
| Mar 10, 2015 at 15:50 | history | asked | tmsimont | CC BY-SA 3.0 |