Timeline for How do I turn on a magnetic lock with an Arduino?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 24, 2016 at 0:47 | comment | added | Ben Voigt | The transistor is the only part of this circuit that's needed, because it controls a 12V device with non-trivial current (which could be the magnetic lock) from a 3-5V digital signal that the microcontroller can provide. | |
| Jan 20, 2016 at 13:38 | vote | accept | abtree | ||
| Jan 20, 2016 at 13:37 | vote | accept | abtree | ||
| Jan 20, 2016 at 13:37 | |||||
| Jan 19, 2016 at 11:39 | comment | added | abtree | What's the purpose of the resistor and transistor next to the on/off? Why not connect the on/off directly to the coil? | |
| Jan 19, 2016 at 1:20 | comment | added | BufferOverflow | Yes, you connect the wire marked «240VAC» at the diagram to «+» on the spare 12VDC power supply, and «Neutral» to «-» on spare power supply. Just remember to replace the «240VAC bulb» with magnetic lock, else there will be a short circuit. | |
| Jan 19, 2016 at 1:12 | history | edited | Nick Alexeev | CC BY-SA 3.0 | image inlined to make the question more self-contained |
| Jan 19, 2016 at 1:11 | comment | added | abtree | To get the 12VDC power supply, do I just get a spare 12V power supply that plugs into a wall (say, that used to go to a printer), and strip the wires? Do I put the ground wire where the diagram says "Neutral"? | |
| Jan 19, 2016 at 1:02 | history | answered | BufferOverflow | CC BY-SA 3.0 |