Search found 1889 matches

by dirk
12 Mar 2024, 12:20
Forum: Hardware
Topic: RevPi not responding after re-imaging
Replies: 1
Views: 121

Re: RevPi not responding after re-imaging

Hi jonaswiberg, you can use a tool that writes and reads out the written image to prove that the eMMC is written correct. For example, you can use balena Etcher for this. Then, if the problem persists, you can use an HDMI monitor and a USB keyboard to check for erroneous behavior during boot and try...
by dirk
11 Mar 2024, 13:35
Forum: CODESYS
Topic: Über CODESYS mit ConCAN Modul RAW CAN Telegramme verschicken
Replies: 4
Views: 409

Re: Über CODESYS mit ConCAN Modul RAW CAN Telegramme verschicken

Hi Wiekon, ok jetzt kann ich nur mit Halbwissen dienen - CODESYS mit Python Schnittstelle plus das Beispiel adaptieren der Python-CAN Library? """ This example shows how sending a single message works. """ import can def send_one(): """Sends a single mess...
by dirk
11 Mar 2024, 12:43
Forum: Hardware
Topic: RevPi Start nicht
Replies: 3
Views: 517

Re: RevPi Start nicht

Hi cedricngonth, möglicherweise hilft das hier:
viewtopic.php?p=7161&hilit=Fehler+5%3A+ ... 8bae#p7140
by dirk
11 Mar 2024, 12:29
Forum: Hardware
Topic: does RevPi Connect S support Using RS485 as a Serial Console?
Replies: 5
Views: 743

Re: does RevPi Connect S support Using RS485 as a Serial Console?

Hi Peter, ttyAMA0 is the PiBridge and therefore cannot work. "ttyRS485" is a symlink that points to the actual UART. As this UART is only set later during booting, the target must be used. Query can be made with readlink /dev/ttyRS485 i.e. pi@RevPi99988:~ $ readlink /dev/ttyRS485 ttyAMA5
by dirk
11 Mar 2024, 09:06
Forum: Hardware
Topic: Problems flashing RevPi Connect 4
Replies: 1
Views: 144

Re: Problems flashing RevPi Connect 4

Hey Steffen, many thanks for the detailed description and for posting it anyway - please don't hesitate to do so here, as it helps us and others to understand where the problems lie. The USB issue is complex. I have added it to the RevPi RPiBoot Checklist.
by dirk
11 Mar 2024, 08:58
Forum: CODESYS
Topic: CodeSys OPC UA Server - keine Verbindung von entferntem Netzwerk
Replies: 4
Views: 255

Re: CodeSys OPC UA Server - keine Verbindung von entferntem Netzwerk

Hi beusterh, ja das sieht genau nach demselben Netzwerkproblem aus, wie hier geschildert von Christian und der Idee von Nicolai mit "iptables" :
viewtopic.php?p=15309&hilit=forwarding#p15345
by dirk
08 Mar 2024, 10:07
Forum: Hardware
Topic: RevPi Start nicht
Replies: 3
Views: 517

Re: RevPi Start nicht

Hallo Cedric und willkommen in der Revolution Pi Community! Was hat sich denn verändert seit gestern? Falls Dein Gerät nicht bootet, bitte prüfe, ob Du ein Micro-USB-Kabel verbunden hast. Wenn Du die Möglichkeit hast, einen HDMI Bildschirm anzuschließen, kannst Du den Bootvorgang betrachten. Sollten...
by dirk
08 Mar 2024, 09:00
Forum: Hardware
Topic: RevPi Connect SE Sensor Connection
Replies: 3
Views: 516

Re: RevPi Connect SE Sensor Connection

Hello user123, ok so you have configured your connection like in video tutorial #21? Take a look at the instructions in that post for debugging the status registers: https://revolutionpi.com/forum/viewtopic.php?p=15497&hilit=modbus+rtu+status#p15497 What kind of sensor do you have and which seri...
by dirk
07 Mar 2024, 09:04
Forum: Software
Topic: RevPi Connect 4 Wifi 2.4Ghz problems
Replies: 10
Views: 823

Re: RevPi Connect 4 Wifi 2.4Ghz problems

Hi Steffen, thank you very much for your detailed description of the problem. Yes, unfortunately, the Wi-Fi connection on the Revolution Pi currently seams be limited on 5.4 GHz at the moment.
We are working on understanding the issue in detail.
by dirk
07 Mar 2024, 08:59
Forum: Connectivity
Topic: WLAN Verbindung
Replies: 4
Views: 746

Re: WLAN Verbindung

Hi Verhoeven, momentan funktioniert die WLAN-Verbindung nur eingeschränkt. Mit 5.4 GHz sollte es funktionieren.
Edit: probiere diesen Kniff - damit funktioniert auch die 2.4 GHz WLAN-Verbindung bei uns:

Code: Select all

sudo revpi-config enable external-antenna
sudo reboot