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Thanks for all the hard work on this one. I've got some time to try and get this going, but am struggling with how to connect up my MAX485 using the existing code - I'm not sure where to connect the a…
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D2 (GPIO4) on D1 mini to RE on module (flow control, orange in my setup)
I think you missed mentioning that RE and DE should be shorted, only looking closely to the picture where the MAX485 is down…
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Hello, trying to understand MAX485 connection to ESP32 from your schema and sketch, please help me to understand.
I have ESP WROOM 32 pinnout
![image](https://user-images.githubusercontent.com/432…
salvq updated
4 years ago
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I have Attiny85 and MAX485. I want to programming attiny by 485. I know that optiboot can change max485 in to "programming mode" by pin from attiny.
Is this option with pin isenabled default?
Or…
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Some RS485 to UART module use the DE/RE flow control pin. However only TX/RX is used currently, meaning in cannot work with the MAX485 one.
This issue is similar to https://github.com/syssi/esphome…
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Hi,
it seems that i dont have understood the functionality of the data direction pin.
i connected a MAX485 with RE&DE shorted together to the data direction pin. but i only get dmx out, no in.
…
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### ModbusMaster version
[2.0.1]
### Arduino IDE version
[1.8.2]
### Arduino Hardware
[ESP8266, NodeMCU1.0 ESP-12E]
### Platform Details
[Operating system distribution and release v…
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How Can I read address 30002 with 2 register? I need to read volume flow of whater. Using modscan32 and a usb adapter for rs485 I can read the correct value, but with arduino and this library the read…
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Could you explain to me why you are using 2 pins on the nodemcu to drive DE and RE on the max485.?
In the program they are both held high or low together so why not just tie them together?
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Hello, I'm trying communicating with a PLC with this library but I get a bad data and I don't know what is wrong.
the image 1 is PLC configuration, the image 2 first line is the data I want recived, …