EmonBase to monitor and control - Transmitter needed?

Hardware
1

Hi there,

I already have a Raspberry and would like to turn it into an EmonBase to get the data sent by the EmonTx and a couple of probes.
What I understand is that I only need a RFM69Pi, is that correct?

However, I also understand that I can run OpenHab on the EmonBase (already installed on the EmonSD). On the screeshots, we see that from OpenHab we can control plugs and other devices. But, the RFM69Pi is a receiver only, isn’t it?
Then, to use OpenHab on an EmonBase (or even an EmonPi), we have to add a transmitter, am I correct?

Is it possible to find a board which is both receiver and transmitter?

Thanks for your replies
Nico

2

The RFM69 is a transceiver. i.e. a transmitter and a receiver.
A Google search returns LOTS of info on the RFM69 module.

3

Thanks Bill for such a quick answer.
When I look in the shop for the RFM69Pi it’s only written “Receiver”, so I’m a bit confused…
https://openenergymonitor.com/rfm69pi-433mhz-raspberry-pi-base-station-receiver-board/
I tried to Google the RFM69Pi, but this is a creation of OpenEnergyMonitor, isn’t it?

4

Understandable. That ought to be changed to transceiver. @glyn.hudson ?

The RFM69Pi the (the blue circuit board in the picture) is,
but the RFM69 module (the green circuit board) is made by a company called Hope RF.

At the bottom of the page you linked to above, there’s a link to the RFM69Pi Technical Documentation wiki.

5

True, even though we mainly only use it to receive it would not be a bad idea to update the title to transceiver. I’ve just made the change.

‘RFM69CW RF transceiver’ is already listed as part of the product description.

6

Thank you @glyn.hudson and @Bill.Thomson for your answers.
It’s clear for me now.

Then could you confirm that I don’t need something like the RFXtrx433XL to use OpenHab (in addition to the EmonCMS) to control devices? (Oregon, etc.)

Cheers

7

No, the easiest way to use openhab is to installed it on the emonPi. If using the latest (18Oct18 emonSD pre-build SD card release) you will need to install openhab. See the standard RaspberryPi OpenHab install guide. If yous using an older emonSD OpenHab is pre-installed, although quite a old version. Recommend using newer version with new emonSD

8

Thanks for the disambiguation about the Transceiver.

Is your “No” means

  • “I don’t confirm that you don’t need” → then I need
    /or/ means
  • “No you don’t need” → then I need
    :slight_smile:

When you say emonPi, do you mean emonBase ? as I intend to use a raspberry + the RFM69Pi

Thanks again