Interfacing (DSI, CSI, I2C, etc.) • Re: Interfacing a 8-bit Serial RGB Display
Thank you, I will certainly look into this. In order to enable the colors in turn I guess I will have to edit the driver itself?If the display-width is 3 times larger, how will this affect the image...
View ArticleGeneral • Re: Progress - basically works but eventually loses MQTT connection
Using MQTT, the Picos eventually lose the connection to the broker, and that's more likely the higher the frame rate is. At 5fps, it remains stable, at 20fps it usually fails within 10 seconds.But...
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Troubleshooting • Re: Two RPi 5 dead
I now investigated the PMIC a bit. It's a Renesas DA9091 but unfortunately the datasheet does not seem to be publicly available.But looking at the board we can see that it includes eight buck...
View ArticleBeginners • Re: Please help me connect phone to Pi 5 via Bluetooth.
Phones use the OBEX protocol, so you definitely need an OBEX server. The problem seems to be the initial pairing which must be done for the Pi to show up as a share destination. I have a Bluetooth...
View ArticleBeginners • Re: Measuring voltage on GPIO to detect blackout
If you are running Bullseye on your Pi4, use the built in command raspi-gpio e.g.Code: raspi-gpio get 21GPIO 21: level=0 fsel=0 func=INPUT pull=DOWNAlso check out this for gpio...
View ArticleAdvanced users • Re: disable Autostart
You could also check the date in the bash script and exit the script if the date is not right.Code: #!/bin/bash# Exit if month is not Julymm=$(date +%m)if [ $mm -lt 7 ] || [ $mm -gt 7 ]; then exit;...
View ArticleOther RP2040 boards • Re: Custom RP2040 | USB Fails to establish...
Don't know if this helps but it shows the three lines I added to 'CMakeLists.txt' to set PICO_FLASH_SPI_CLKDIV when I was testing how over-clocked my Pico could go -Code: set(PROJECT...
View ArticleBeginners • Re: 12V DC Wiper Motor Position
Jester,Based on my own experiences over 50 years ago your "wiper motor park signal" is actually a simple "keep it going until the wipers are at parked position". This position is usually...
View ArticleAdvanced users • Re: i2c expander
The cleanest way is to use the kernel drivers for both the display and I2C expander.The PCF8574 has a driver at https://github.com/raspberrypi/linux/bl ... -pcf857x.cThe display is likely to be an...
View ArticleGeneral • Re: i need help on how to get power for multiple sensors
that will not be enough for this projectsHow much power do you need ?The Official Pi 3B PSU can deliver 2.5A via micro-USB so, plug that into a Pico, and you should have over 2A available on VBUS. You...
View ArticleBeginners • Re: SSH RaspberryPi remotely that's using wireguard vpn client
Sure, that is possible. Follow the instructions on https://www.pivpn.io/ and install the WireGuard ‘server’ on your RPi. Then , before you leave your LAN, install the WireGuard ‘client’ software on...
View ArticleCamera board • Re: LINK_FREQ and PIXEL_RATE
Both are covered by the V4L2 documentation - https://www.kernel.org/doc/html/latest/ ... ocess.htmlV4L2_CID_PIXEL_RATE is used with the width, height, V4L2_CID_VBLANK, and V4L2_CID_HBLANK to configure...
View ArticleTroubleshooting • Re: Pi 4B will boot from one m.2 SATA SSD but not from another
Thanks again, David. After the bootloader update, the pi now boots from the 256GB SSD. I'm dd-ing the 32GB-->256GB again right now and will come back if any problems.The bootloader update wasn't a...
View ArticleJava • Re: Java Help with bitwise operators
The stored data type is "byte"Code: byte[] data = new byte[2];Can I assume this is unsigned 8 bits like uint8_t in C ?If so, the & 0xFF mask in "(data[0] & 0xFF)" seems pointless but harmless...
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Troubleshooting • Re: Bios does not recognize raspberry Pi in g_multi mode
Hi thanks for the tipp I´ve managed to get it working now this lib composite... the BIOS now recognizes the Pi I still have one problem: The Ethernet adapter from the Raspberry Pi, which is configured...
View ArticleTroubleshooting • Re: Raspberry Pi Hardware Repairs
" the cable the wrong way around, so swapped it around ..."Which cable ?The DSI cableStatistics: Posted by JonnyAlpha — Wed Jul 31, 2024 11:59 am
View ArticleInterfacing (DSI, CSI, I2C, etc.) • PWM phase offsets not working on RP1
Hi all!I'm working on a project on a Raspberry PI 5 where I need two synchronised PWM's operating with a phase shift. (Software PWM does not cut it for this application I'm afraid.)My problem is that...
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Troubleshooting • Connecting pi to tight vnc
Hi I have been using realvnc to control pi servos from my pcs and ipad but with the recent real vnc charges i am trying to change to tightvnc without any luck after several hours of trying.I am using...
View ArticleGeneral discussion • Re: Is it worth getting any other display rather than...
You may know more than I do but I would not assume RP displays are built and designed in house. Yes, I would expect the QA to be tighter than with a 3rd party display. Buying everything from RP means...
View ArticleTroubleshooting • Re: Is there a way to use RPi._GPIO in docker without...
I have this system that has been working fine for over a decade (with docker for 3 years)... suddenly, it doesn't work anymore and I had to make the container privileged. I don't know where the...
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