| Electronics > Beginners |
| First pcb |
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| pix3l:
Have you checked the wiring on your potentiometer? Are you sure the resistance between the two legs you have wired up is going to change the way you think it will? |
| ataradov:
Yes, this looks way better. But PR1 is indeed wired incorrectly. Can you also post the schematic? |
| james_s:
That looks WAY better, good job. I would still suggest making the traces thicker though, there's no reason not to. Also make sure you check the physical clearances, I've been burned a few times when real components were larger than the silkscreen showed. Maybe move that capacitor a bit further from the regulator too, you don't want electrolytic capacitors too close to things that get hot. |
| Tom10000:
Okay i have uploaded the schematic and I will also check the wiring now thank you |
| ataradov:
Yes, your PR1 will not actually adjust anything. You need to connect central wiper pin to one of the end pins. Which one - depends on the resistor and which way you want adjustment to happen. The first layout made it look like the connection was there. There is a lesson here - good and logical layout lets you catch errors. Even in a simple example like this. |
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