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by matei_vidican
Sun Apr 06, 2014 9:13 am
Forum: Automation, sensing and robotics
Topic: XBEE interferences
Replies: 6
Views: 1529

Re: XBEE interferences

First of all thank you guys for the reply. Tarcas, I really appreciate that you tried to explain me. I was reading what you wrote and I said that it will be an interesting project, so probably it will be the next objective on my agenda even if I have to finish my bachelor thesis :D . But as Ivan sai...
by matei_vidican
Sat Apr 05, 2014 7:55 pm
Forum: Automation, sensing and robotics
Topic: XBEE interferences
Replies: 6
Views: 1529

XBEE interferences

Hello, The ideea is that I have 5 square meters area where i have to use 30 graphical displays each of them with it's own microcontrollers. I Is difficult to use wires in that region so i was thinking to use a wireless solution. To be more exactly i was thinking to use some XBEE modules. But i don't...
by matei_vidican
Wed Dec 11, 2013 8:44 pm
Forum: Automation, sensing and robotics
Topic: glcd and I2C
Replies: 1
Views: 687

glcd and I2C

Hello people! Currentlly I'm working on a project that include a GLCD display like EA DOGXL 160-7 ( http://www.lcd-module.com/eng/pdf/grafik/dogxl160-7e.pdf ) that use this http://www.lcd-module.com/fileadmin/eng/pdf/zubehoer/uc1610_v1_36.pdf . When I connect the display ro Raspberry Pi and use the ...
by matei_vidican
Mon Nov 11, 2013 10:37 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

Re: 40 LCDs and Raspberry pi

Hello people, I'm understanding what I have to do as hardware, now I have a big question, how can i control everything from a web page, because i intend to use a database? If you can recommend something to read it would be perfect. I would like to do something like activating/deactivating different ...
by matei_vidican
Fri Nov 08, 2013 9:46 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

Re: 40 LCDs and Raspberry pi

Hello Ivan,


For the moment I don't have the adaptor i think just next week I'll have it. Regarding the level shifter for each display, should I use the same type as the ones that you recommended for the adaptor?.


Best regards,
Matei Vidican
by matei_vidican
Thu Nov 07, 2013 1:25 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

Re: 40 LCDs and Raspberry pi

First of all thank you Ivan for your post. Hi, I believe RS-485 is the only bus which makes sense in your scenario. However, even with RS-485, there are several traps which you need to be aware of... for example, the SN75176 chip proposed in datasheet is NOT suitable for you. The main reason is that...
by matei_vidican
Thu Nov 07, 2013 1:11 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

Re: 40 LCDs and Raspberry pi

grahamed wrote:Hi

RS485 does support multi-drop but can the screens handle the addressing? Looks like they're limited to 8.
They are limited to 8 hardware addresses but is possible to use software addresses, until 255.
by matei_vidican
Mon Oct 21, 2013 12:01 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

Re: 40 LCDs and Raspberry pi

Thanks for your reply guys. Wouldn't be easyer to use an usb-rs485 adapter to avoid any addressing and wiring problem?
by matei_vidican
Sat Oct 19, 2013 12:20 pm
Forum: Automation, sensing and robotics
Topic: 40 LCDs and Raspberry pi
Replies: 13
Views: 4591

40 LCDs and Raspberry pi

Hello people, First I hope here is the right place to post and if you have some new ideas or advices feel free to write. So my project is to make a system that use 40 graphical displays and post something different on each of them, numbers, text, graphs on a big info panel. For the displays I've cho...

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