I have an aftermarket Arduino Uno R3 and it doesn't connect to my computer, not at all. I put 15 volts in for another component since it needed the extra voltage and one of the arduino's component fried I think. The capacitor labeled "C1" gets very hot after plugging it in a USB port. I would like to replace it. Does anyone know what type of capacitor I need to buy? Is the whole board fried maybe?
What other component?
The Arduino 5V output is intended only for a couple of low power sensors or LEDs. It cannot be used to power motors, servos or any other power hungry components.
a high watt speaker
I doubt very much that C1 is the only problem. Hopefully, you have learned a lesson!
For speakers, use an audio amplifier with separate power supply. Don't forget to connect the Arduino and amplifier power grounds.
yeah. i wouldnt power an arduino with 15 volts again
Exactly how did you have it connected?
Don't want to make the same mistake twice.
i put the 15 volts right on the same line as the arduino 5v (rookie mistake i know.)
On purpose or by accident. The 5V pin is an output.
it was an accident. on the breadboard i didnt realize that the 5v was already connected to the rail i used. it can be an input too if you use a battery connected to gnd and 5v. that's why it immediately stopped working
You also cannot connect a high watt speaker directly to the Arduino.
Learn how to power an Uno
Read the section on power so that you don't destroy another
i learned it. it wont help me now + mistakes do happen. I didn't want to directly power the arduino. but since i did. i wanted to ask if it is fixable? if it isn't then that's just my loss.
Sure it's fixable.
Are you good at surface mount soldering and desoldering?
Do you have a DMM?
Do you know how to read a schematic?
yes i do have a multimeter. I know how to read a schematic. I can solder and desolder. I just bought a new tip for my soldering iron because it rusted.
Probably, but if done professionally, the repairs would cost much more than a new board.
First you need to find the schematic for your board.
I'll look for it
alright then. thank you for the answer
You likely, at a minimum, need to replace the regulator on the board. However, there's no guarantee that that's all you fried, so here's how it's likely to go:
- you order and receive a replacement regulator. $, plus shipping $
- you successfully swap the regulator, and try the board. No luck.
- you order and receive a replacement ATMEGA328. $, plus shipping $
- you successfully swap the CPU, and try the board. No luck.
Sense a pattern yet? Buy a new Uno, hang the old one on the wall (clearly marked, so you never try it again).
Oh yeah... the tax on shipments from china costs more than an actual arduino. Thanks for the tip though!