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Can you use pymodbus on Raspberry Pi 3B?
Followed this thread on enabling the serial console on the Raspberry Pi 3B. Checked the functionality using this code: Which produced these results: However, when I tried to use pymodbus, I couldn’t even connect to the client. Used this code:
How to connect Raspberry Pi 3B to energy meter?
Used this code: My Raspberry Pi 3B is not communicating with the energy meter (53U-1211-AD4/H), used the energy meter’s T1, T2, T4 (GND) for the modbus connection. Used the RPI’s UART pins 8 & 10 (GPIO14 & GPIO15).
Is there a way to tweak pymodbus for RTS?
You might be able to tweak pyModbus and use the RTS alternative functions on your Pi (see here: https://github.com/mholling/rpirtscts ), but I don’t think this path will get you very far reliability wise. As I wrote here: RS485: Inappropriate ioctl for device, you might be better off going for a hardware solution.
How to connect a Raspberry Pi to a RS485?
My connections for raspberry pi and rs485 are as follows Rs485 DI – Tx of raspberry pi Rs485 R0 – Rx of raspberry pi Rs485 DE/RE -Pin 7 of raspberry pi from pymodbus.register_read_message import ReadInputRegistersRequest
Why is Modbus not working on Raspberry Pi?
However, I recommend to use the second one, because the first one is not working. First of all – there is small mistake in for loop (some bits are omitted), secondly – Raspbian is not Real Time OS, so counting time on the level of μ seconds without any prioritization of threads makes that reading values from DHT11 is highly error-prone.
How to make my program get access to ttyama0 on Jessie?
My program complains it can’t connect. How do I make my program get access to ttyAMA0 on Jessie? and in “Advanced” choose “Serial” (Enable/Disable shell and kernel messages on the serial connection) and disable it. Steps 2 and 3 should not be necessary if you do this step first, but in case it didn’t work – check them also.
How to get notify-send working on Raspbian Jessie?
The error message is something like this: notify-send “Test” “It works!” I did some more digging. The descriptions all said, “… to a notification daemon”. And got some other packages. and the notify-send now works. Thanks for contributing an answer to Raspberry Pi Stack Exchange!