Clik here to view.
Automation, sensing and robotics • Re: Wiring multiple photoelectric sensors...
2) 4k7 resistor over 5V and light ON (as shown in your diagram on Mar.14): 4.84V when sensor detects nothing (no hit), 5.15V when sensor detects object (hit).This is PNP output . Then it's not a...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Rasberry Pi 4 - 2 Channel SPI0 Conflicts
Hello, I'm running a 2 channel spi configuration utilizing the SPIDEV kernel module. The first channel (CS0) sends out a 4 Bytes full duplex message as a heartbeat monitor and the 2nd channel is used...
View ArticlePython • Re: Datetime Code Not Working
It doesn't matter, because, it's really just incorporating the date in the name, and I found out why it didn't work. I should have instead of making current_time a variable, I should have defined it...
View ArticleTroubleshooting • Re: Weather Satellite Receving Station - Software Load Error
Hi neilglThanks for your reply, it got a heck of a lot further that time but failed again here: TASK [common : Installing AnyDesk remote desktop] with a HUGE list of errors. The tutorial instructions...
View ArticleInterfacing (DSI, CSI, I2C, etc.) • Re: Rasberry Pi 4 - 2 Channel SPI0 Conflicts
I have found that the heartbeat channel when disabled still interferes with the EEPROM channel.What do you mean by this? How have you configured but disabled it?My initial thoughts is that maybe it...
View ArticleGaming • Re: Where can I find a big list of ROMs?
googlei don't think we can post links for that, might get banned.just be specific when searching, name of emulated device + romorthe specific game you want for a specific emulator.i did it not to long...
View ArticleClik here to view.
HATs and other add-ons • Re: Pcie board for pi 5 coming?
Good to know that an SD is still needed. I will probably trying to get a Plex server with gpu hw transcoding.A PCIe “shoes” board from 52pi is on the way. Any experience with it?Was just about to...
View ArticleOff topic discussion • Re: 2024 Raspberry pi 3 a+ Boot problem
SoSystem = Operating System (OS)What they want to know is what errors you are seeing, what is shown on your monitor and when. Normally other OSs you will need to go and ask them Can you confirm the...
View ArticleGeneral discussion • Re: Raspberry Pi 5 discussion thread
https://www.jeffgeerling.com/blog/2024/ ... ck-314-ghz3.14GHz sounds interesting as an experimnet.I do run my Pi5 with 3GHz and force_turbo=1 since months without issues — so not much to gain and I...
View ArticleCamera board • Re: Libcamera error on Rpi5 when starting the gpiod
I can try gpiozero, maybe it comes from gpiod library but it seems to be a hardware allocation issue ?I test and let you know. Thanks for your answer.Statistics: Posted by watchever — Tue Mar 19, 2024...
View ArticleMicroPython • Re: Rotary Encoder
Looks like you've trid to install Mike Teachman's MicroPython Rotary Encoder Driver library but missed out some of the files. You need to have rotary.py and at least rotary_irq_rp2.py on your...
View ArticleClik here to view.
Automation, sensing and robotics • Re: Maximum speed for a stepper motor.
In 1988 I built a x/y plotter with a hard pen (4000bar water through 0.1mm hole in diamond):viewtopic.php?p=2111418#p2111415I had to use same ramp up/down for that solution; the stepper motors were...
View ArticleGeneral discussion • Re: bluetooth audio x11 session not work for kodi on...
If I use ...Code: kodi --standalone -fsbluetooth audio disconnects on start kodi on wayland, too.but If I launch kodi on wayland session with ...Code: kodibluetooth audio remains usable for...
View ArticlePython • Re: I don't know how anyone is happy with Python now
Python in 2024 is such a mess that I just don't want to use it any moreI think some examples of what is causing you grief may be applicable.Yes, I agree, there can be challenges especially if you are...
View ArticleBare metal, Assembly language • Re: RPi 4B - MMU config with...
aarch64Statistics: Posted by yaw moo — Tue Mar 19, 2024 8:55 pm
View ArticleTroubleshooting • Re: Pi 4B Undervoltage condition relating to modern HDMI...
There's 4.03 seconds between undervoltage being detected and rectified, not microseconds.vc4-kms-v3d will be reinitialising the display stack to its liking. It is also fussier (but also more flexible)...
View ArticlePython • Re: Pi 5 / RC522 / Python for RFID Reading?
Start with adafruit!they have very good document to learn stuff.For the MFRC522,https://blog.adafruit.com/2017/10/06/se ... pberry_pi/And for the SPI,https://learn.adafruit.com/circuitpytho ......
View ArticleSDK • Re: Valid CPU speeds
Use https://github.com/raspberrypi/pico-sdk ... vcocalc.py to make sure, it is a valid frequency. It seems nearest speed accepted by the hardware will be 301,2 MHz.Statistics: Posted by MatSOBDev2 —...
View ArticleGeneral • Re: Placement of decoupling capacitors in RP2040 board design
A schematic circuit diagram has nothing to do with physical layout, it's abstracted away completely usually (but not always, especially for RF and microstrip design).Decoupling capacitors for fast...
View ArticleGeneral discussion • The Grounding Wire
What is your simple explanation of grounding? What does the grounding wire do? Why do we need it in order for the circuit to work?Thank you.Statistics: Posted by MrTech — Wed Mar 20, 2024 8:18 pm
View Article