question

The trouble with trying to change the active state of the relay outputs is that during a reboot, the GPIO outputs will go to their default state. If you've inverted the normal behavior of a GPIO output somewhere in the process, the relays will close during boot until an overlay is loaded or whatever mechanism is used to change their active and inactive states.

I highly recommend you use a relay board that uses a high on the GPIO output to activate the relay.

BTW, it's my RpiGpioSetup that sets up the GPIO pins for the 6 relays. GuiMods does have a relay overview page that controls whatever relays are present in the system.

Hello.

I'm a newbie and I would also like to have

my small control panel

(toggle switch for refrigerator, water pump, lighting, etc.),

which is now 20 years old, against the 7″ screen

and insert everything into the VenusOS Soft with Raspberry.

In the "SetupHelper" with Venus OS 2.85,

6 relays should be displayed and operable in the GUI.

ASK:

Which relay do you use? These ones?

3V Relais

And how is the connection to the Rasp Board?

I am happy about your help.

You should be able to connect any relays you want to the GPIO pins. The ones you linked to should work fine, just make sure they are set to independent for the signal input.

Refer to the gpio_list file for the pins on the header that correspond to relays 1 - 6 on the GUI. GPIO really output pins are active HIGH.

Thank you Kevin.

I found the gpio_list file with the pinout in the meantime.

# Relay 1 Pin 40 / GPIO 21

# Relay 2 Pin 11 / GPIO 17

# Relay 3 Pin 13 / GPIO 27

# Relay 4 Pin 15 / GPIO 22

# Relay 5 Pin 16 / GPIO 23

# Relay 6 Pin 18 / GPIO 24

21 out relay_1

17 out relay_2

27 out relay_3

22 out relay_4

23 out relay_5

24 out relay_6

May I ask you to take a look at the drawing and see if I'm not making a mistake by connecting it like this.

Sorry, my knowledge is at the beginning and the possibility of providing the Raspberry with the wrong connections and thus destroying it is great.

Thanks in advance.

P.S.: The file SetupHelper "venus-data.tgz" is unpacked onto the USB stick or transferred as .tgz?

I'm not sure how much 3.3 volt power the PI can supply so I would use a separate supply to power your relay boards. Theres a jumper on the board to isolate the input from the on-board power supply, That jumper should be in the isolate position (jumper removed). (The RPI will supply the trigger voltage.

You would connect the relay negative power pins to the RPI ground. The relay power pin would be connected to a separate 3.3 volt supply NOT the RPI 3.3 volt pin on the header. The negative side of the supply would connect to the relay negative terminal.

Do not unpack the SetupHelper venus-data.tgz file. Put it on the USB memory stick or SD card as is. If you unpack first as automatically happens on Mac OS Safari it will not be recognized. Safari can be set to disable automatic unpacking: uncheck Open "safe" files after downloading.

I'm currently building the facility.

I was able to upload the SetupHelper file.

Does the file have to be called up and installed again in the GUI?

I haven't really researched the advantages and scope of SetupHelper yet.

Thank you very much for the valuable information and your tireless commitment to this cause.