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Hi
I used to control GPRS/Edge or 3G modems from windows applications by sending AT commands through COM port. Modern 3G and 4G modems don't appear as a COM port when installed on Windows OS. The new modems appear as a network interface card. How can I control -hopefully by sending AT commands-...
Hi
I did another work around to allow RN171 to reply to each remote host when getting UDP packet
after each UDP reply from RN171,
enter to command mode ,set host ip to 0.0.0.0, save and exit command mode.
This way I refresh the auto pair function
but I have two problems with this work around...
Hi
did you set the host IP address to 0.0.0.0, and ip flags to 47
in order to allow auto paring?
also I allow both TCP with UDP , in order to be able to access the RN through telnet for configurations
I Setup RN171 with STM32 board for testing
set ip proto 3
set ip host 0.0.0.0
set ip port "my application port number"
set ip flags 0x47
Now When I send a UDP packet from PC to module the module is capable of replying to it.
This works on FW revision 2.36 but on FW revision 4.41 I am still...
I highly appreciate your support.
I can handle UDP packets using JAVA , my problem is how to get the sender IP address when I get UDP packet on RN171.
it's not logic to put a PC for home automation , just small micro with wifi module can do the job
The no of clients goes up to 10 users some of them are local and some are connecting through port forwarding.
So How can I get the IP address of the sender when I get a UDP Packet, or if it's possible to reply directly to lats UDP Sender using RN171
Regards
Hossam Alzomor
Thanks Horace for your reply
1. I am using MicroChip - Roving Networks- RN171 WiFi module for Wifi Connection, it has only one TCP port, so I need to close the TCP connection to allow other users to connect to the RN171 .
2. The Receiver Sends a reply on each received command.
3. No it's not...
Hi,
I am using a mobile application Android/IOS to as a remote control for home Automation.
The mobile application opens a TCP socket for each command and send the command then close the TCP Socket.
connection is over WiFi and/or 3G
The problem is that the time latency for opening the socket...
@Chuckey
R151 & C150 work as high pass filter with cut off frequency 338.9 HZ which will block the 50HZ
- - - Updated - - -
my problem is not the 50Hz noise itself
My problem is that the 50Hz noise amplitude increases when my signal is weak .
Why the 50 Hz noise increases when my IR Signal is...
Hi I am using a simple reverse biased photo diode with two stage amplifier
The problem is that when the IR source is close to the photo diode this circuit is working fine,
it amplifies the received signal in addition to a small 50HZ signal is super imposed on it
but when the IR source moves...
Hi
I am using ZTE MF667 3G modem with windows 8.1 tablet.
My application connects to the 3G modem to get some RSSI and location information
I need to stop the default operator application which runs automatically when I plug the 3G modem. and to control connection and disconnection from my...
As a rephrase to the question
Modern 3G USB Modems are listed as a Hilink Ethernet port
How to switch them to Serial com port from the application?
in linux there's a tool called USB_Modeswitch which do this JOB, what's the equivalent in windows
My modem is E8231
Hi
I used to drive the 3G USB modem from my application using AT commands over Virtual com port
Modern 3G USB modems are not listed as virtual comm ports ,
How can I drive them?
Can I use my old applications with them?
Regards
Hossam
Hi
I am using a triac to drive am AC contactor.
the contactor coil is 1.25H & 385ohm
The problem is that the snubber circuit burns when I turn on the supply "220V"
What should be the R & C values and rating for the snubber circuit to drive such load?
Best Regards
Hossam
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