Trying to connect 8-Relay Addon EMO-R8

denis

Hello,

I'm trying to add a 8-Relay Addon EMO-R8 to a unipi.

I connected it to the I2C RJ11 connector with an external power supply.
Both LEDs (I2C and power) are On.
I did not change the I2C adress on the board (0x21).

I changed the evok/evok/evok.conf file by removing the ';' in front of the example included in the file
…

;
;Example of 8xRelay extension module addon (EMO-R8) on address 0x21
;
[MCP_1]
i2cbus = 1
address = 0x21

[RELAY_8]
mcp = 1
pin = 7

[RELAY_9]
mcp = 1
pin = 6

[RELAY_10]
mcp = 1
pin = 5

[RELAY_11]
mcp = 1
pin = 4

[RELAY_12]
mcp = 1
pin = 3
...

Since then, the web page (127.0.0.1) is not showing any input or output.
Any idea what I did wrong ?

Thanks,
Denis

denis

Hello,

I'm trying to add a 8-Relay Addon EMO-R8 to a unipi.

I connected it to the I2C RJ11 connector with an external power supply.
Both LEDs (I2C and power) are On.
I did not change the I2C adress on the board (0x21).

I changed the evok/evok/evok.conf file by removing the ';' in front of the example included in the file
…

;
;Example of 8xRelay extension module addon (EMO-R8) on address 0x21
;
[MCP_1]
i2cbus = 1
address = 0x21

[RELAY_8]
mcp = 1
pin = 7

[RELAY_9]
mcp = 1
pin = 6

[RELAY_10]
mcp = 1
pin = 5

[RELAY_11]
mcp = 1
pin = 4

[RELAY_12]
mcp = 1
pin = 3
...

Since then, the web page (127.0.0.1) is not showing any input or output.
Any idea what I did wrong ?

Thanks,
Denis

denis

The example seems to be incorrect ;(

Working now with :

[MCP_2] (instead of 1)
i2cbus = 1
address = 0x21

(the RELAY_8] is already used on the base unipi board , so start at RELAY_9)

[RELAY_9]
mcp = 2 (instead of 1)
pin = 7

[RELAY_10]
mcp = 2
pin = 6

[RELAY_11]
mcp = 2
pin = 5

[RELAY_12]
mcp = 2
pin = 4

[RELAY_13]
mcp = 2
pin = 3

[RELAY_14]
mcp = 2
pin = 2

[RELAY_15]
mcp = 2
pin = 1

[RELAY_16]
mcp = 2
pin = 0

Definitely need documentation on extension, UNIPI !!!

Sorry for that. Will be fixed in next update to the repository.

We are currently overwhelmed with finishing the Mervis software. However I will first implement the necessary things in evok and then publish all documentation to our hardware.

Anders Kjellström

We ned more dokumentation to connect relay addon

RobRemote

Hi Whitch evok conf has to be changed to activate the EMO R8 relays ?
I tried to remove the ; at the /etc/evok/.conf but when I store with o and confirm to overwrite and leave with x and open the conf again the ; are back again .

Do I have to change the other conf? /home/pi/evok/etc/evok.conf

Kind regards Rob

tomas_hora

@RobRemote As stated in the Readme /etc/evok.conf is the file you are looking for. How did you install Evok and what OS are you using?

RobRemote

@tomas_hora Hi Tomas , the problem was solved , I made a mistake with store the filename and it was working perfect , now I want to add a second emo-r8 and I copied the file and changed the adres and the relay numbers and the mcp numbers .

What is the jumper setting for adress 0*22 ?

Kind regards : Rob

tomas_hora

@RobRemote Check the printing on the PCB near the configuration pins.

RobRemote

@tomas_hora Oops! looked over it ! allmost unpossible not seeing it but works great by now , Thanks Tomas!