Raspberry Pi Forums

owatnext

Hello, I need a small, powered USB hub. Preferably USB 2.0 It needs to be small enough with the plastic housing removed to fit within a hollowed out Dell keyboard, the standard one that comes with those junky Walmart computers. It also needs to be AC powered. Does anyone have a suggestion on a cheap...

owatnext

Hello. In raspi-config, I have attempted to enable the OpenGL driver. It says that it has succeeded, but not exactly in the manner that I wanted. Output of glxinfo: Vendor: VMware, Inc. (0xffffffff) Device: llvmpipe (LLVM 3.9, 128 bits) (0xffffffff) Version: 13.0.0 Accelerated: no Video memory: 925M...

owatnext

Alright, well have you got any links to a reputable seller that has a 800x600 screen? I am having trouble finding that specific resolution.

owatnext

Hello. I was wondering, if I were to buy just "any old" LCD with TFT interface, would I be able to connect it to the Raspberry Pi somehow? I'm talking about this http://ow.ly/3Vfd309hQFp screen in particular. (Or maybe this http://ow.ly/zP3L309hQUI ) I just don't know how TFT screens work and interf...

owatnext

Use GPARTED to edit the partitions. You may have to remove the SD card and plug it into another computer.

owatnext

You could create a message board in PHP and host it on a web server.
Then, just set the Pi to constantly be on the webpage and refresh every thirty seconds or so.

owatnext

http://www.cheesed-off.com/137_reverse-scrolling/
Found this in Google with a quick search "natural scrolling Debian" since Raspbian is just Debian. I haven't tested it; I'm not at my Pi right now, but maybe this will be of help.

owatnext

You need to install the module (AKA driver) for it.
Check this link.
http://www.tp-link.com/en/download/TL-W ... tml#Driver

After downloading, install it into the modules directory that exists on whatever OS you are using.

owatnext

There's a chip called MCP3004. I believe it handles two joysticks.

I do think that if you need more room, slimming down the Pi is a really good option. Say, if you only need two USB ports and no Ethernet jack, just go ahead and remove that you don't need. Same if you don't need HDMI.

Good luck.

owatnext

BMS Doug wrote: one warning: matrix solutions aren't compatible with having two buttons pressed simultaneously.

Ah, that's incompatible with my project. I need between two or three to be pressed at one time.
Thank you for the information; it saved me from a lot of errors. Lol.

owatnext

You only need 9 gpio pins for up to 20 buttons using a 4x5 matrix, check the article I linked to. Sorry, I originally missed reading through the link you posted. I've read it now, but could I apply this to a custom button layout? To make it more handheld friendly. The design of the 5x4 matrix doesn...

owatnext

Thanks for all of the answers, guys. I think I have a much better grasp on this whole thing now. My programming and software side of knowledge is so much higher than the hardware side. Whoops lol. (The only PCBs that I have ever made have been for indicator lights. :oops: ) I don't need touch, just ...

owatnext

The Pis with the 40 pin expansion header have 26 available GPIO. I hope that's a yes, lol. See, I have no prior experience with GPIO at all. How many pins are required by a display and how many for each button? If I designed and ordered a PCB, would that bring down my pin usage at all? Is there a w...

owatnext

Hello. I am attempting to get many inputs with (hopefully) just the standard GPIO. I need 17 buttons and a TFT screen to be hooked up to my Pi 3. Would I have enough room on the header for all of this, or would I need to set up I₂C? I'm trying to avoid I₂C, because it seems to be a bit confusing. Th...

owatnext

Connecting speakers to GPIO directly would not be possible. You would at least need a transistor driver and/or an amplifying circuit of some sort. You mean something like this, right? https://learn.adafruit.com/introducing-the-raspberry-pi-zero/audio-outputs Maybe I could apply the same concept to ...

owatnext

Hello. This question is a bit of a two-parter. I'll go ahead and list the question, then elaborate. 1) Could I hook up a small speaker to the GPIO? 2) Can I have my Pi 3 automatically determine between two or three possible places to output audio? Say… with Python? Elaboration: 1) I would like to ad...

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