Revpi DIO wiring configuration

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farani87
Posts: 1
Joined: 03 Jun 2020, 10:08

Revpi DIO wiring configuration

Post by farani87 »

Need a quick check before i perform any "smoke test" with my unit. Which connection is possible?

A
Revpi-DIO.PNG
Revpi-DIO.PNG (93.91 KiB) Viewed 20453 times
OR

B
Revpi-DIO-b.PNG
Revpi-DIO-b.PNG (67.79 KiB) Viewed 20453 times
Thanks
Pyk35
Posts: 1
Joined: 24 Jul 2025, 14:37

Re: Revpi DIO wiring configuration

Post by Pyk35 »

I have the same question!

Why can't we find wiring diagrams for all the expansion cards? It's incredible.

It's clear that this product was created by computer scientists, not automation engineers. I expected to see all the information needed by a schematic design office, with each connector, terminal numbers, logic, etc.
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RamiGspo
KUNBUS
Posts: 51
Joined: 02 Jun 2022, 23:20

Re: Revpi DIO wiring configuration

Post by RamiGspo »

Hi farani87,
Looking at your wiring diagrams, Option A is the correct and recommended connection.
- Digital Input 1 connected to 24V: This will properly register as HIGH when activated.
- Digital Output connected to Light, Light connected to GND: Light will turn ON when DO goes HIGH.

Option B is not recommended. Digital Input 1 connected to 0V/GND would be problematic - the input will not properly register state changes when connected directly to ground.
On the output side, while Digital Output connected to Light and Light connected to 24V would work, the light would turn ON when DO goes LOW (inverted logic).

Good luck with that!

---

And now you Pyk35, Hi!
Thank you for your feedback.

You're absolutely right that having clearer and more complete wiring information would make things much easier, especially when starting out with the system. We’re currently working on improving our documentation step by step, and feedback like yours helps us a lot in understanding what’s really needed.

In the meantime, if you're missing specific wiring or connector details, we recommend checking the datasheets of the individual modules — they often include more in-depth technical info: https://revolutionpi.com/en/support/downloads#c357.

And of course, feel free to ask here! We and the community are happy to help with any specific questions.

Best regards,

RamiGspo
Mit freundlichen Grüßen | Best regards | Muchas gracias

Ramiro Gsponer.
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