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I also noticed that if i remove the 220uf cap, 10nf cap and 10k resistor there is no difference in the sound i get..maybe the problem is in the op amp?
I fixed the code problem, now i hear something that repeat it self and it similar to the audio file in the rate of it but it still sounds like a noise or humming and not like a voice..
But there are many examples in youtube of using 8 bit dac audio output and it's sounds good...
I've checked my dac and it's working good in voltages of 0 to 5..maybe the problem is after the dac? because the sound i get is not similar to the original sound..
Re: CA3140AE Op amplifier ic
This is good right?
https://www.st.com/content/ccc/resource/technical/document/datasheet/e0/93/6a/47/c3/22/40/f6/CD00001188.pdf/files/CD00001188.pdf/jcr:content/translations/en.CD00001188.pdf
I'm trying to implement audio output using R2R 8bit DAC and Arduino UNO.
This is my hardware:
http://imgur.com/a/hiUCq
This is the sound i want to hear:
http://vocaroo.com/i/s0VDwBBkQRdc
This is a wav file, 16Khz, mono, 8 bit pcm.
I used matlab to retrieve the binary data from the wav file...
Hi,
I've tried to use CA3140AE IC as a buffer, i putted 5v in the (+) pin but the problem is that my output is 3V and not 5V.
This is the scheme:
Why i don't get 5v in the output in your opinion?
CA3140AE datasheet:
https://www.intersil.com/content/dam/Intersil/documents/ca31/ca3140-a.pdf
Hi,
In fact i do it using a microcontroller, as you can see in the following picture:
As you see no any external signals are connected to the electronic assembly during the check.
I want to pass 5v through the gnd pin and to see if 5v is return back to the i/o pin of the uC.
I emphasize that...
Check ground pin in electronic assembly
I have some electronic assembly which have some inputs and ouputs. One of the inputs is GND and it connected to the body of the electronic assembly.
Now i want to make some project which checks that the gnd is not connected by mistake to some another pin...
Hi, i need help in reading the datasheet of 1n5818 diode.
What means the 30v maximum VRRM voltage? or 30v maximum dc blocking voltage? Does it the maximum dc voltage that can pass through the diode?
What is the minimum reverse breakdown voltage?
Hello, I build some project which use a constant power supply of 30V 30A, and i want to limit the current because i'm not use such a huge current and i want to promise that my project will never get 30A in 100%.
I want to limit my project circuit current to 1A, what is the easiest way to do it?
- - - Updated - - -
When i think about it again, your idea is not very good for me because i need to pass high voltage (30V). I thought is not important to mention it but now i think different :bang:
So assume that i have 30V in the collector of the transistor, and Vin is some I/O port (0/5V)...
Look at this circuit:
I have to find a way that when Vin is "0" Vout will be 0V and when Vin is "1" Vout will 5V.
"1" -> 5V
"0" -> 0V
As you see, right now is exactly the opposite of what I want, do you have some idea how to do it without many changes?
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