Go to advanced search

by dcristut
Sun Mar 24, 2019 9:21 pm
Forum: Networking and servers
Topic: Huawei GSM dongle used both as network adapter AND GSM
Replies: 1
Views: 379

Huawei GSM dongle used both as network adapter AND GSM

Hello, We are using an Huawei usb dongle to connect our RPi B+ via 4G to the Internet. Is there any possibility to also have acces to the AT commands? I would like to send also SMS via the same dongle. When I try that the serial port reports as opened (because it it uset as network interface) and I ...
by dcristut
Mon Jan 22, 2018 10:39 am
Forum: Troubleshooting
Topic: Run python script as cgi under apache2 server[my experience]
Replies: 10
Views: 23550

Re: Run python script as cgi under apache2 server[my experience]

Hello, Thank you for the helpful tutorial. I am trying something: I want to put the CGI module (pytest.py) in some other directory : /home/pi/usbdrive/www/cgi-bin Therefore I have changed the configuration file /etc/apache2/conf-enabled/serve-cgi-bin.conf like this: <Directory "/home/pi/usbdriv...
by dcristut
Tue Dec 19, 2017 6:41 pm
Forum: Beginners
Topic: Multi-drop bus and RPi
Replies: 14
Views: 7092

Re: Multi-drop bus and RPi

Thank you mmame,

That HAT looks exactly like what I was looking for. It is pretty expensive though.
I have pretty much advanced with my project and I am using one of these:

http://www.vendingtools.ro/en/content/r ... raspislave

Thank you again,
Daniel
by dcristut
Sat Dec 16, 2017 4:25 pm
Forum: Networking and servers
Topic: 3G modem both Internet connection and AT commands
Replies: 1
Views: 1621

3G modem both Internet connection and AT commands

Hello there, I have this 3G modem (a Huawei 3372) and it automatically connects to Internet when the RPi boots, like an eth connection. That's fine since I am sending data to a server via this connection. However, I need also to have control over the modem via the AT commands, mainly to send SMS and...
by dcristut
Thu Jul 20, 2017 4:30 pm
Forum: Python
Topic: Data consolidation
Replies: 5
Views: 1037

Re: Data consolidation

Hi Alan, It is vague indeed. I've made some wrong assumptions... my bad, sorry :) The feeding device is a collection of RPi's used for telemetry (hundreds of them). The RPi's collect data and need co consolidate it .. somewhere ;) I said "somewhere" because this is also a part of a problem...
by dcristut
Thu Jul 20, 2017 10:14 am
Forum: Python
Topic: Data consolidation
Replies: 5
Views: 1037

Data consolidation

Hello, I am new in RPi world and I just started working with one. I need your help concerning the way data gathered with RPi can be uploaded somewhere. One concern I have is that, due to the large amount of devices feeding data, there can be hundreds of simultanous communications. What would you rec...
by dcristut
Mon Jun 26, 2017 11:44 am
Forum: Beginners
Topic: Multi-drop bus and RPi
Replies: 14
Views: 7092

Re: Multi-drop bus and RPi

Sounds great. Thank you again.

Have a nice day!

KLL wrote:check out
http://www.coinco-europe.com/manuals/US ... En_017.pdf
electric and low level protocol in a ready box
by dcristut
Mon Jun 26, 2017 4:08 am
Forum: Beginners
Topic: Multi-drop bus and RPi
Replies: 14
Views: 7092

Re: Multi-drop bus and RPi

Thank you, I am aware of the difference between RS485 as an electrical standard and MDB. All I want is to know if I can use an 485 RPi adapter to connect to a MDB bus and/or, even better, if there is someone who already did that and how. Or do I need some special MDB adapter for RPi? (if there is on...
by dcristut
Sun Jun 25, 2017 7:45 pm
Forum: Beginners
Topic: Multi-drop bus and RPi
Replies: 14
Views: 7092

Re: Multi-drop bus and RPi

- did that
- found this site
- Stop
- go back to square one ....
by dcristut
Sat Jun 24, 2017 3:36 pm
Forum: Beginners
Topic: Multi-drop bus and RPi
Replies: 14
Views: 7092

Multi-drop bus and RPi

Hello,

Can someone help me with more information concerning a connection between RPi 3 and a vending machine via a multi-drop bus, please?

I think a RS485 adapter is needed but, due to the 9 bit structure of the MDB packet, I am not sure it will do the job.

Thank you,
Daniel

Go to advanced search