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Topic: ReleDuino Project update files 15.06.2013 (Read 1 time) previous topic - next topic

Federico_Paiano

May 05, 2013, 12:12 am Last Edit: Jun 19, 2013, 09:37 am by Federico_Paiano Reason: 1
I have designed a board based on Arduino for home automation use.
The card can be placed in a case din (208x86,5 mm).
The "master card" is equipped with a chip arduino atmega-328p-au and controls 8 bistable relays with 16 ampere and accepts 8-button input
The "slave card" does not have the chip but can be controlled by the master control for other 8 relays and accept other 8 buttons.
Each master board can control up to 7 slave cards.
Through the use of specific i2c buffer (P82B96 or pca9600) I can control the slave cards up to 100m away from the master.
Adding another master card, I can control other slave boards 7.
I can add up to 96 master boards in a network, 112 i2c addresses reserved minus 16 addresses: 8 addresses for mpc23017 (output) and 8 addresses for PCF8574 (input), and 96x7 slave boards.
All cards can communicate with each other. someone can affect my project?
You'll also find files of the programs used in the demonstration posted on youtube: http://youtu.be/x3JpeyEOX2c

CrossRoads

"someone can affect my project? "

Please explain the question.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Federico_Paiano

"Please explain the question."

I designed the card described.
I drew the schematic and completed the circuit.
I have already tested the prototypes but I'm not a electronic expert.
I need advice about my project to see if it can be improved.
I also need to co-workers interested in the development of the project.

CrossRoads

You're not going to get  much help without posting a schematic to start.

Sounds like you have some working software - we'd need to see that too.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

Federico_Paiano

#4
May 05, 2013, 11:42 pm Last Edit: Jun 19, 2013, 09:35 am by Federico_Paiano Reason: 1
I drew the schematic and the PCB with Kicad.
The files are available. The project is working but in constant development.
I have attached 2 files pdf: schematic and pcb.

Federico_Paiano

#5
Jun 19, 2013, 09:34 am Last Edit: Jun 19, 2013, 09:41 am by Federico_Paiano Reason: 1
The circuit diagram has been made much more readable (I hope).
Was inserted a new slide switch which terminates the RS485 line and adds resistance to the polarization (if you activate the line is terminated by resistors, otherwise not).
Were also included protections for the MAX485: a SM712 for lines A and B and a SM05 on nutrition component.

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