December 9, 2023, 17:43
Electrical Schematic using RPI
Hello guys. I'm trying to get an electrical schematic using a Raspberry PI 3B+, 2x L289N each connected with 2 DC motors and 3 ultrasonic sensor HC-SR03. From what I've seen so far, the sensors need resistors and the power supply of the driver modules must be separate.
December 9, 2023, 17:48
RPI4 Not Booting
Im trying to boot from an HDD with a powered SATA to USB
December 9, 2023, 17:43
Help with gameboy nano build
Im trying to create the "Gamboy Nano" that ive seen on thingiverse https://www.thingiverse.com/thing:1334253 Ive been able to most of the parts except for 1. The 1 part im looking for is this analog/joystick component on the custom made pcb. Ive looked around a little bit and saw that maybe it was a 4 way tactile switch, but im not sure as I am new to this and this is my first project. If anyone could take a look and let me know what the joystick component is really called, that would be much appreciated!
December 9, 2023, 17:42
can one resister be used for multiple circuits?
Are these the same thing?
December 9, 2023, 17:41
Errors installing Ros 2
Hey! I'm facing an issue while installing Ros 2, if anyone knows anything, please help!
the documentation instructions say to type: choco install -y -s <PATH\TO\DOWNLOADS\> asio cunit eigen tinyxml-usestl tinyxml2 bullet
in an administrative shell. When I do with: choco install -y -s <D:\PR\Downloads\> asio cunit eigen tinyxml-usestl tinyxml2 bullet
I get the error:
At line:1 char:21
+ choco install -y -s <D:\PR\Downloads\> asio cunit eigen tinyxml-usest ...
+ ~
The '<' operator is reserved for future use.
+ CategoryInfo : ParserError: (:) [], ParentContainsErrorRecordException
+ FullyQualifiedErrorId : RedirectionNotSupported
Again, if anyone knows what I can do, please reply!
December 9, 2023, 17:41
Run python script at startup
Hi all, I'm trying to get a python script to run when the pi starts up. I've tried crontab and rc.local, but neither works. I'm using a Pi 4.
December 9, 2023, 17:40
controle led strips whit pico W
i have a pico W and a led strip that i can control whit my phone over wifi, i what to control the led strips whit a few buttons an my pico W but i don't know where to start. i have Visual studio code, can someone help my.
December 9, 2023, 17:39
Easiest way for a person to set Wifi SSID and password without connecting to co puter?
Imagine I made a product and the rpi needs wifi, is there some rest way for the customer to set the SSID and password without hooking up mouse, kb and screen? I guess I could include a touch screen but 8 so t want to do that just for that purpose.
December 9, 2023, 17:40
I want to host a wifi server from my rasberry pi at school and then charge people to use it
I would charge 5 for a whole week of use and have already got people asking
Anyone know where u could start from
December 9, 2023, 17:38
Bluetooth Transmitter
So, I got an RPI 4, an iPad, and a Wired Keyboard. I want to connect the wires keyboard into rpi and use it with my ipad. Any way to turn the rpi into a bluetooth transmitter so I can connect wired mouse or keyboards to my ipad?
December 9, 2023, 17:39
Live weather balloon tracking using a raspberry pi and a phone
I'm planning on getting latitude, longitude and altitude of a weather balloon I plan on tracking with a pi 3. Is there any way where I can feed the data into a live map to track it?
I also want to wireless display the data on my phone so if you guys know how to do that the help would be appreciated.
December 9, 2023, 17:40
Raspberry pi 4 wifi confusion
Im currently making a project using the Raspberry pi 4 for my final examn. Its an Nx-Witness camera system that is supposed to be cloud accesable as soon as you connect it to wifi and power supply. now i have the system functioning as long as i have it connected to internet via UTP. the problem arises when i connect it to wifi. whenever i disconnect the UTP cable and connect it to wifi, it will display as being connected, but wont connect to the cloud, and wont allow me to use anything that requires a connection.
so i assume this means its not actually connecting to the internet. does anyone know how i can troubleshoot and potentially fix this?
December 9, 2023, 17:37
Shortage of GPIO pins
Hello!
I'm currently working on a project where im "building" an egg cooker. Here i am using a Raspberry Pi 4B which has the 2x20 GPIO Pins. In regard to my project i have bought three things. A responsive screen, solid state relay and temperature sensor.
DS18B20 Digital Temperature Sensor
- https://dk.rs-online.com/web/p/sensor-udvikling/2049893?cm_mmc=DK-PLA-DS3A-_-google-_-CSS_DK_DK_Raspberry_Pi_%26_Arduino_%26_ROCK_og_udviklingsvƦrktĆøj_Whoop-_-(DK:Whoop!)+Sensor-udvikling-_-2049893&matchtype=&pla-300807621014&gclid=Cj0KCQjwtsCgBhDEARIsAE7RYh2aFs4krnS_mm63JSevVczBqeDqywP0413sCPVfhi3_hr5EVQhZ-w4aAmdrEALw_wcB&gclsrc=aw.ds
Currently i have this wired to a breadboard and then two wires from the breadboard going into GND and 3.3V on the GPIO pins.
Solid state relay
Connected to a GPIO pin and GND
4DPI-32 MK2
- https://dk.rs-online.com/web/p/raspberry-pi-skaerme/9094105
As i was able to read and see this screen uses/clicks on all of the GPIO pins, which i wouldn't be able to because as i explained i am using some of the GPIO pins for my solid state relay and temperature sensor. Is there any way you guys would know a way to workaround this?
December 9, 2023, 17:37
My raspberrypi wont let me start a Fivem Server
Hello dear People can somebody help me: https : // stackoverflow.com/questions/76028509/my-raspberrypi-wont-let-me-start-a-fivem-server
(Link is broken)
Stack Overflow
My Raspberrypi wont let me start a FiveM Server
Today i tried to run a FiveM Server on a Raspberry pi but i get this error message:
./run.sh: Line 10: /home/pi/FiveM_Server/server/alpine/opt/cfx-server/ld-musl-x86_64.so.1: Cannot run the binary:...
Bild
i get errors about x86_64
December 9, 2023, 17:36
Python and artnet
Does anyone know of a python library that works with art-net? Would anyone be willing to write me some code using that library? The code would get the data and print it to the terminal in just the RGB and brightness in the form of a hex code.
December 9, 2023, 17:35
smart mirror
when i ānpm startā my smart mirror i get an error saying node_modules/.bin/electron js/electron.js and it says thereās no such file. can someone help
December 9, 2023, 17:32
connecting so many components to a rpi 4
Hey!
I am try to connect a rc522 rfid reader, LCD 20x4 with a i2c module, A usb camera and 3 mg996r servo motors to a rpi 4
What is the best way to do it, since servo require more current I am unable to decide
also I have a breakout board as well with few pins and a usb port
December 9, 2023, 17:36
Trying to get this relay working. Ive got a level shifter. Do I need anything else?
Hi. Im trying to get this relay to trigger and I'm concerned I'm not providing enough power to the relay to trigger them. I've got an i2c level shifter thats able to put the voltage from 3.3v to 5v to the relay but the instructions advice that the shifter needs to have a 5v power supply on the HV side. Can I just use a 5v power supply or do I need to find a 5v supply from my Pi 4? The issue is I don't have access to any of the GPIO pins as they are occupied by the HyperPixel Screen.
Parts:
Raspberry Pi 4 4gb
MLink 4 Channel I2C / Parallel Relay Module ( https://hobbycomponents.com/recently-purchased/1090-mlink-4-channel-i2c-parallel-relay-module )
I'm using the Pimoroni breakout connectors for quick release from the relay.
December 9, 2023, 17:33
Aquarium Raspberry Pi project
https://www.kiwi-electronics.com/en/tools-machines-155/solder-sn60-pb40-0-6mm-100g-11351
the packaging says "the best quality solder", so it must be true
December 9, 2023, 17:32
Drivers raspberry pi 4
I'm not sure what I'm talking about but I have a device ("inverter") and when I plug it into the raspberry pie it shows up as /dev/ttyAMA0 when it should show up as /dev/ttyUSB0 this is a drive issue right?
December 9, 2023, 17:33
How much power can you draw from the Raspberrypi pico w?
surprisingly i didn't find anything about this: i have a device that needs 5v 480mAh, can i connect that to VBUS or do i have to install a completely separate micro usb port just for that?
December 9, 2023, 17:32
How can you run an interactive script on boot with no monitor plugged in?
I feel like this should be a common use case for a raspberry pi, I'm surprised how hard it is. I have a raspberry pi 3a+ and a python script that runs auxiliary hardware plugged into the pi (I don't think the specifics of those are too important). Then I have one of these three-key USB mini-keyboards plugged directly into the PI, and based on the input from those keys, the python script does things with the auxiliary hardware.
The only problem is that it requires booting up a terminal and manually running the script. Ideally, as soon as the pi turns on, the script would run and start polling for input with just the usb keyboard and auxiliary hardware plugged in, no monitor necessary.
[Tried] Using a cronjob with @reboot seems to be a deadend because they run in the background and can't take user input
[Tried] Using rc.local seems to fail for a similar reason
[Tried] Putting the script in .bashrc seemed like it failed, but I was having trouble finding the logs to figure out what might've gone wrong
[Haven't tried] Using systemctl by specifying StandardInput=tty seems like it might work, though I'm concerned that there is no tty to connect to since there's no monitor/ssh connection (I don't know the details of how this works)
* [Haven't tried] Using openvt to create a new VT as mentioned at https://superuser.com/questions/584931/howto-start-an-interactive-script-at-ubuntu-startup seems promising
Ideally, I could just go through all these option. The issue is, I'm helping a friend work this out virtually, which means I'm telling them what to do and that makes the debug process painfully slow. I'd like to hear some advice from the people here on what seems feasible, or if there's a different approach altogether that might be better.
December 9, 2023, 17:33
Linux running in RAM
Hi,
Does anyone know of any Linux distros for the Pi that load into RAM on boot and then don't read from or write to the SD card?
I am aware of a couple
PiCore
TinyCore
and possible Alpine.
Are there any others?
Thanks
aussieW
December 9, 2023, 17:32
Smart Calculator W/Raspberry Pi
Hi all, I'm new to working with Raspberry Pi's, but I figured they would be useful to use on a new project I'm working on. I'm planning on working on making a smart(er) calculator that uses the Raspberry Pi camera to allow my calculator to be able to take a picture of an equation, and then using a Raspberry Pi, send it to a math website (probably Photomath), and then send back the websites results.
I'm mostly just curious if this is something that I can do with Raspberry Pi's, since as I mentioned, I'm new to working with them, and am not sure of their capabilities. If anyone can give some clarification, I'd appreciate it a bunch. Thanks!
December 9, 2023, 17:29
Changing the polarity on an school model electric motor.
Hi, IĀ“m working on a project were i have to create a new control method to change the polarity on a motor without using a commutator. I already implemented a bridge circuit and that part works fine. I just wanna now how i could get the program to activate and deactivate my relays after exactly half of a rotation
December 9, 2023, 17:30
Canāt SSH over Wi-Fi
Hi, I have a pi running Debian and it is connected to my network via Ethernet. I want to SSH into it from my iPhone over the Wi-Fi. How do I do this? Iāve tried everything within my scope but nothing works.
December 9, 2023, 17:30
Which Raspberry Pi model to choose?
thanks for all the info btw I really appreciate it
December 9, 2023, 17:30
A project with SSDs
I've currently got two 2.5 inch SSDS both 250gb attached to my Raspberry Pi4B 4GB with a 64gb SD CARD.
Im currently trying to figure out the best way to run each SSD seperately, one as a NAS and the other as a KODI/OSMC media centre.
Whats the best way to do this?
I've thought of using NOOBS on the SD card to access the SSDs but I figure seeking some advice before putting in the effort would be good.
December 9, 2023, 17:29
what measurement is this
the documentation for the rp2040 doesnt specify if the resistor is 27.4 Ī© or 27.4 mĪ©
December 9, 2023, 17:31
Can't get the fan program to operate correctly
I got this tower kit for my pi https://wiki.52pi.com/index.php?title=ZP-0130-4wire , and can not figure out why the fan is not operating correctly. Admittedly I know very little about programming or python for that matter. Before I even installed any of the software for the tower kit, the fan started working as soon as I started the Pi up. Following the instructions I created the file pwn_fan.py. When I execute the CLI just starts displaying the cpu temp refreshing every .1 sec, and I can only get it to stop by closing the shell window and relaunching. From what I understand, the script controls the fan through PWM so that depending on CPU temp it will vary the speed of the fan. Am I executing the program in the wrong place, is it bad code....or?
