So I downloaded the emulator and ROMs but when I open the game the game crashes than I open the game once again and the emulator crashes any fix?btw I’m on iPhone 12 iOS 17

Hi, folks! Long time lurker, but now I decided to share a bit more about what I'm trying to do and ask some questions 😅

I want to create a budget sports camera that has a good enough quality for me to run some machine learning algorithms on the footage later on. It needs to be portable, battery powered, and weather resistant (although this part can wait).

Instead of trying to create something from scratch, I wanna validate the idea first by using off-the-shelf, commercial products. If it works, I'll figure out the next steps later. Right now, my idea is to use: - Reolink duo 3 POE camera (https://reolink.com/ca/product/reolink-duo-3-poe/) - Maxxwave 500mAh POE+ Power Bank (https://www.balticnetworks.com/en-ca/products/maxxwave-802-3af-at-7500mah-gigabit-poe-power-bank) - Raspberry PI (not sure about the model yet)

Since the camera provides a RTSP feed, my idea is to basically use a raspberry pi (zero, 3, 4, 5 - I don't know yet) to read the feed and save the files in the SD card (say, every 10min). I tested this with another RTSP-capable camera and it works on my machine, but I don't have any RPIs to test.

So, finally the questions!

Do you think that power bank can provide enough power to the camera and raspberry pi during ~2h? What raspberry pi model would work best for this? It'll mainly be 2h of writing files in the sd card (rtsp >> ffmpeg >> sd card) Is there anything that I might not be considering for a setup like this? Thanks!

Hey guys I want to update my 2002 RTI pop up navigation system with a CarPlay based on raspberry pi. The hardware is done the screen is changed and the pi 4 is build. I wanted to use OpenAuto Pro but it seems like the page is now longer existing ist their an alternative for apple car play?

Hi everyone,

I'm working on a small project with a Raspberry Pi. Recently, I've been traveling a lot and I’m not often at home near my NAS to manage and access my downloads. So, I decided to revive a Raspberry Pi 4 Model B that was lying around in a drawer. What I love about this setup is that the Raspberry Pi 4 is small and portable, so I can take it with me anywhere I go, making it the perfect companion for managing my downloads on the move.

I've installed Raspberry Pi OS Lite, qBittorrent, Aria2, and AriaNg for the WebUI. I also connected an SSD optimized for downloads and set up Samba for file sharing.

I've ordered a 3.5" touchscreen (480x320) that I plan to configure as a control center to monitor various aspects of my Raspberry Pi, such as the IP address, and to handle basic configurations like Wi-Fi and Bluetooth with an on-screen keyboard for text input. The goal is to be able to configure my Raspberry Pi without needing to SSH into it.

I’ll keep you updated on the progress of my little project and will post an update as soon as I receive my screen and have everything set up. If anyone is interested, I can also do a detailed tutorial on how to replicate this setup :)

My goal is to control the speed of a 12V 0.24A 120mm 2 wire pc fan.

After googling PWM seemed like a valid approach. I used an nchannel mosfet (LR7843) to turn the 3.3V raspberry pi PWM signal into a 12V signal and wired the fan accordingly.

https://preview.redd.it/4tzi3biunfjd1.png?width=688&format=png&auto=webp&s=09ae95515e84788ae8e7b45c170affc3b92d59be

Now this worked perfectly fine with one fan I have but a newer fan did not respond as expected. After some more googeling I found out that most 2 wire brushless pc fans should not be controlled via a pwm signal but an analog signal.

Using a potentiometer I can vary the speed as desired on both fans. Now I would like to vary the speed via software.

This is where I'm currently stuck at. How do I turn my 12V PWM signal into an analog signal?

I have the gameboy style GPI case with retropie its all running but i had to take the pi out and hook it to the tv with a keyboard so i could put in my current ip address and wifi password but im not getting display on the tv i know my hdmi adapter is good because i tried my raspian card and it booted and i know all the connections are right, I'm hoping someone can give me a easy solution and that I'm just overthinking it making it seem harder to fix than it is

I have a Pi zero that I am using to drive an e-ink display as part of a project I am working on (custom e-ink typewriter). I am using a Waveshare display which uses a HAT driver board. The HAT has GPIO jumper cables so jumpers on the power supply would likely be fine, though it'd be a bit messy.

I've come across several options:

https://www.adafruit.com/product/4114

https://uk.pi-supply.com/collections/pijuice/products/pijuice-zero

https://www.waveshare.com/ups-hat-c.htm

https://www.tindie.com/products/pisugar/pisugar-3-battery-for-raspberry-pi-zero/

But this is outside my realm of knowledge so I don't really know the benefits and drawbacks of each.

Something to note is that the GPIO header on my Pi is a solderless hammer header since I don't know how to solder. Is anyone aware if something like the Pi Sugar would even work with one of those? The headers extend further down below the Pi than a soldered version would.

The only real thing that I want is the ability to easily power on/off the pi once it's in an enclosure and not easily accessible.

This is my first Pi project so please excuse any missing knowledge on my part

Thanks!

i am trying to make a gameboy emulator using retro pi and a pi zero 2 w. for powering the pi itself i have 2 options:

1: a standard tp4056 USB c chrger module.

use of this will only allow me to use the pi until it reaches 3.3 v thus leaving unused power left over in the battery.

2 : another type c charger with adjustable voltage(idk what it is called or how it works) Type-C QC AFC PD2.0 PD3.0 to DC Fast Charge Decoy Trigger Support 5V 9V 12V 15V 20V Fixed Voltage Output - Besomi Electronics

or I can use an adafruit powerboost but that costs $25 3-4X more expensive than the other 2 options.

so I would like to know whether option 2 is viable and can take 3.7v to 5v or should I just use the powerboost.

ps: can I make a 3.7 v battery pack using 3-4 3.7 3800mah batteries and should why be in series or parallel?

Hi Guys,

I've currently got a project where I'm using an RPi to communicate with two Arduinos for I/O. I was going to connect them via the RPi UART pins to the Arduino UART pins (with level shifters), but now I'm wondering is there any benefit to using the UART pins on the RPi, rather than just using the virtual serial port created by the USB?

I tried googling, and it looks like either will work, but I couldn't find much else?

Hi everybody,

I am planning to build a "cheat sheet display" to place next to my computer monitor.

All I need this to do is display whatever URL I need at the moment. All pages will be hosted locally. Perhaps it could also display mpv at times to display the front gate security cam, but that is optional (depending on what pi I'll use and how well resources can handle both at the same time).

The pi will be connected to some hdmi monitor or raspberry display (not sure yet).

Then, I want to automatically send commands to it from my PC, depending on the cheat sheet. Let's say I'm working with krita, I'd like to press a button on my stream deck that will then send something like ssh <cheatsheetpi> <browser> <url>, so that the pi will display the krita cheat sheet.

I won't have a mouse or keyboard connected, so there doesn't even have to be a fully functioning desktop environment. If I have to do anything, I'll ssh into the device.

The browser needs to display one single page at the time. No tabs, no bookmarks, nothing. Ideally, the browser would be capable of this: either the ssh command should automatically replace the single existing tabs contents, or there should be a parameter to do so (so I won't end up with countless background tabs).

While typing this I realize that I should probably use a touch screen display and not a regular hdmi monitor, so that I could scroll pages with a lot of content.

What desktop environment and browser would you recommend?

I run awesomewm and Firefox on my desktop machine, but the pi monitor won't need tiling. The browser should always be maximized. if I do also implement a temporary mpv popup, that windows should float.

Afaik, Firefox is not able to replace the active tab, but rather will always open a new tab (hopefully I'm wrong, but I couldn't find a parameter for this).

Is there a low resource browser that does this by default? No tabs, only one maximized browser windows at all times, replacing the existing tab with the new url?

Thank you in advance for your ideas :)

so i have a raspberry pi 4 and i wanted to install opencv 4.6.0.66 version but the OS that i have with my raspberry pi comes with python 3.9.8 so i am thinking if i should make python 3.9.8 my default or i should just make it my virtual environment i need python for future stuff but it looks like to much work which one would you guys recommend i am on the 64 bit bullseye operating system and also i have no idea how to make a virtual environment or make python 3.9.8 my default

I am trying to build a project for a remote area that uses multiple raspberry pi's to collect data and report it back to a server. I was thinking of using batman-adv to build a mesh network and then have one of them use a cellular modem as a gateway.
I have been following this guide and have 2 pi's setup (using ethernet for gateway to test) and apparently both are on the mesh network (see below).

Testing:
When I run ifconfig I get this (I took out lo):

edge@edgeunit1:~ $ sudo ifconfig bat0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1468 inet 192.168.199.1 netmask 255.255.255.0 broadcast 192.168.199.255 inet6 fe80::2095:9ff:fecd:912e prefixlen 64 scopeid 0x20<link> ether 22:95:09:cd:91:2e txqueuelen 1000 (Ethernet) RX packets 9430 bytes 399250 (389.8 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 57 bytes 5522 (5.3 KiB) TX errors 0 dropped 71 overruns 0 carrier 0 collisions 0 eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.17.102 netmask 255.255.255.0 broadcast 192.168.17.255 inet6 fe80::2764:a542:2cbf:d23e prefixlen 64 scopeid 0x20<link> ether e4:5f:01:00:c5:f4 txqueuelen 1000 (Ethernet) RX packets 8200 bytes 2378489 (2.2 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 2259 bytes 215511 (210.4 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet6 fe80::e65f:1ff:fe00:c5f5 prefixlen 64 scopeid 0x20<link> ether e4:5f:01:00:c5:f5 txqueuelen 1000 (Ethernet) RX packets 156384 bytes 10012800 (9.5 MiB) RX errors 0 dropped 4 overruns 0 frame 0 TX packets 159603 bytes 12452466 (11.8 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 

And running batctl o gives me this:

edge@edgeunit1:~ $ sudo batctl o [B.A.T.M.A.N. adv 2023.3, MainIF/MAC: wlan0/e4:5f:01:00:c5:f5 (bat0/22:95:09:cd:91:2e BATMAN_IV)] Originator last-seen (#/255) Nexthop [outgoingIF] * b8:27:eb:c8:f6:53 0.440s (255) b8:27:eb:c8:f6:53 [ wlan0] 

I can use batctl to ping unit2:

edge@edgeunit1:~ $ sudo batctl ping -c 5 b8:27:eb:c8:f6:53 PING b8:27:eb:c8:f6:53 (b8:27:eb:c8:f6:53) 20(48) bytes of data 20 bytes from b8:27:eb:c8:f6:53 icmp_seq=1 ttl=50 time=7.66 ms 20 bytes from b8:27:eb:c8:f6:53 icmp_seq=2 ttl=50 time=7.60 ms 20 bytes from b8:27:eb:c8:f6:53 icmp_seq=3 ttl=50 time=7.66 ms 20 bytes from b8:27:eb:c8:f6:53 icmp_seq=4 ttl=50 time=7.65 ms 20 bytes from b8:27:eb:c8:f6:53 icmp_seq=5 ttl=50 time=7.82 ms --- b8:27:eb:c8:f6:53 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss rtt min/avg/max/mdev = 7.605/7.676/7.815/0.072 ms 

I'm interpreting this as my mesh is up and both are connected.

My question:
Does the above output mean the gateway is gatewaying and handing out 192.168.199.* addresses? The pi's are headless and I can't figure out how to ssh into the pi that is not directly connected to my home network over ethernet (unit2). I have it's MAC from above and can ssh into the gateway unit (unit1) over ethernet, how do I ssh into unit2?
I'm just trying to figure out if unit2 has access to the internet.

Hello,

I want to use Ubuntu Desktop or Server (doesn't really matter which one) on my Raspberry Pi 5 using my NVME 1TB SSD. I have no SD-Card so the way im installing Ubuntu on my RPI is that I plug the USB Stick into my normal Windows PC, then using RPI Imager flash Raspbian (Raspberry PI OS) onto the USB Stick, then plug the stick into RPI and boot up, on the RPI OS go to /boot/firmware/config.txt then add dtparam stuff to enable pci, next open Imager and install Ubuntu os on the ssd. Then just unplug the usb and reboot, done.

But now I want to add full disk encryption to to that Ubuntu system on the ssd, how can I achieve this?