Questions tagged [tcpip]

This should be used when referring to the transmission protocol TCP/IP.

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Which shield to use for GPRS?

I'm planning to build a device that would read some sensor data and send it via GPRS, eg. once per day. (Not that original, yeah.) But my problem is choosing a GSM/GPRS shield. The official ...
2
votes
1answer
9k views

Is there any good working MODBUS TCP master library available for Arduino?

I would like to connect with Fronius solar inverter through MODBUS TCP with Arduino to READ and WRITE register values only. I want to set the Arduino as master and the Inverter as slave. I want to use ...
0
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1answer
1k views

ESP8266 check if TCP client disconnected…informally

Hi with ESP8266WiFi library, I usually check for connection of a TCP client with client.connected(). But it seems to still return true if my TCP client in an unexpected way (like disconnect to WiFi/ ...
0
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2answers
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Cannot directly connect Arduino Ethernet to PC

I have been following various tutorials (especially: this) to connect an Arduino Ethernet board to my Ubuntu PC via Ethernet directly. The IP address of the computer was found to be 10.100.31.128, ...
0
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1answer
4k views

Sending data over TCP connection in one piece

I'm trying to send short strings via Java client to Arduino server and vice versa. Sending data to client goes fine, but when I try to send data to arduino it cuts the string into bytes and then sends ...