Timeline for How to switch 12V with esp32?
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
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| Nov 14, 2022 at 6:27 | comment | added | gbg | @user87507 Umm, this is strange. Please, show me some pictures of your device | |
| Nov 13, 2022 at 1:43 | comment | added | user87507 | @gbg - When I connect the emitter to the ground rail, the ESP 01S locks up (I'm using GPIO2). Any ideas? I'm using the same components listed here, a 330 ohm resistor and a 2N4401. Thanks. | |
| Aug 16, 2021 at 22:15 | comment | added | gbg | Do you know a good N-channel MOSFET which can be fully opened from 3.3 volts? In any case, OP needs the flyback diode if the magnet doesn't have one. | |
| Aug 16, 2021 at 21:16 | comment | added | dandavis | This works, but if you're swapping OP's FET, why not just spec a logic-level N-channel FET and decimate the BOM (no flyback, no BJT, no resistors) for the build? | |
| Aug 16, 2021 at 8:03 | vote | accept | Noobie | ||
| Aug 14, 2021 at 9:14 | comment | added | gbg | @StarCat - Done :) | |
| Aug 14, 2021 at 9:10 | history | edited | gbg | CC BY-SA 4.0 |
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| Aug 14, 2021 at 8:56 | comment | added | StarCat | Nice answer! One tip: You could make the schematic a bit more “readable” by applying a few standard layout rules: 1) Put the (positive) supply voltage at the top 2) Put Ground (or negative supplies) at the bottom 3) Any input signals to the left and 4) Output signals to the right. You could look at the elaborate answer to this question. | |
| Aug 14, 2021 at 7:54 | comment | added | Noobie | Thank you very mutch.Of course I forgot the flyback diode 😀 so I'll add it. | |
| Aug 14, 2021 at 7:51 | vote | accept | Noobie | ||
| Aug 16, 2021 at 8:03 | |||||
| Aug 14, 2021 at 7:37 | history | edited | gbg | CC BY-SA 4.0 |
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| Aug 14, 2021 at 7:32 | comment | added | gbg | Oh, i really forget about that - I've added it on PCB but not in shema. I'll fix it now | |
| Aug 14, 2021 at 7:23 | comment | added | chrisl | How is the MOSFET gate going to be charged with Vcc? The transistor switches the path for ground. Isn't at least a pullup resistor at the MOSFET gate needed? | |
| Aug 14, 2021 at 6:14 | history | answered | gbg | CC BY-SA 4.0 |