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Questions tagged [output]

Output refers to any PHYSICAL output from the Raspberry Pi. There are four main outputs: GPIO, HDMI, RCA and Audio.

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58
votes
12answers
300k views

Why is my audio (sound) output not working?

I can't get the audio running. I don't hear anything and can not play anything. Is there a solution to enable audio?
57
votes
7answers
238k views

Can a simple cable convert HDMI output to VGA?

One may buy a simple HDMI-to-VGA cable, or an HDMI-to-DVI cable. Example: on Amazon. However, my vague knowledge is that these cables only work for video cards that have special support for this ...
1
vote
1answer
3k views

I2S Recording combined with I2S Playback

I have a Raspberry Pi Zero and I am using the Adafruit I2S MEMS Microphone together with the ADAFRUIT I2S 3W CLASS D AMPLIFIER BREAKOUT - MAX98357A. I did follow the two respective tutorials and I ...
3
votes
3answers
958 views

Why is Component not working for Raspberry Pi 2?

Note: It may not be working because of which cable I am using. So I have a Raspberry Pi 2 Model B and I want to connect it to a computer monitor that only takes composite video input. This is what I'...
28
votes
3answers
8k views

How can I use the GPIO pins as digital outputs?

I've read that the Raspberry Pi has a number of input and output pins. How can I switch them? (from Python?) What voltage logic? Do I need pull-up or pull-down resistors? Do I need to switch the pins ...
10
votes
2answers
3k views

What are the pros and cons of connecting to a VGA monitor?

I can either get a passive RCA (Composite video) to VGA, an active RCA to VGA or an active HDMI to VGA, but which? What I want to know is: How does the quality compare between them (as in not ...
3
votes
3answers
1k views

GPIO input and output levels

I have some basic questions, sorry, I have'nt found this. What are output levels of GPIO (Raspberry Pi) I mean the voltage ranges of low and high for input/output What is the maximum current that ...
6
votes
2answers
28k views

The Composite Video on my Raspberry Pi isn't working

I run the commands /opt/vc/bin/tvservice -o<br> /opt/vc/bin/tvservice -c "PAL 4:3" and the screen changes from the default "no signal" screen to a black screen. This shows me that the ...
13
votes
4answers
15k views

How do I attach two monitors in a dual head configuration?

I'm considering buying a Raspberry Pi or compatible solution. My problem is that I could not find how to achieve a dual head configuration. I would like to attach two 1920x1200 displays by digital ...
3
votes
2answers
3k views

Connect GPIO output to second Raspberry Pi input

Is it safe to connect a GPIO output to a GPIO input?? For example: Set the GPIO input to GPIO.PUD_UP and connect it to GPIO output. Then when the output is HIGH, then the input is logic 1, and when ...
6
votes
2answers
1k views

How can I move the terminal?

For some reason my TV is cutting off about 4 or 5 characters from the screen of my Raspberry Pi. I am using Raspbian, but it occurred with Arch as well. Could it be that I have an HDMI to Component ...
2
votes
2answers
2k views

raspbian-output-video-camera-to-3-5-lcd

I have a pi3, pi camera and kookye 3.5"lCD. On power up the OS is displayed on the 3.5 screen and the touchscreen works fine. When I run the camera it doesn't out put to the 3.5lcd. Likewise when I ...
1
vote
2answers
4k views

How to control pi HDMI output from laptop via VNC

I have my pi plugged into a monitor with HDMI, and I want to use my laptop (running Ubuntu Linux) to control what it displays on the monitor through VNC. Currently, I can connect to the pi with VNC, ...
0
votes
1answer
199 views

No output of commands on SSH console since Jessie was installed [closed]

when I for example execute the command poweroff, there is no output of the command visible. This happens with systemctl restart apache2 as well. I assume that system ouput is forwarded to somewhere. ...