# EmonBase to monitor and control - Transmitter needed? **URL:** \ **Category:** Hardware\ **Tags:** emonbase\ **Created:** [31 October 2018 21:29 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011 "2018-10-31T21:29:58Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![NPL](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/n/e19adc/32.png) [@NPL](https://community.openenergymonitor.org/u/NPL)\ **Post date:** [31 October 2018 21:29 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/1 "2018-10-31T21:29:59Z")
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 ---
**Author:** ![Bill.Thomson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/bill.thomson/32/1834_2.png) [@Bill.Thomson](https://community.openenergymonitor.org/u/Bill.Thomson)\ **Post date:** [31 October 2018 21:36 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/2 "2018-10-31T21:36:12Z")
> [@NPL](#): > > But, the RFM69Pi is a receiver only, isn’t it? The RFM69 is a _transceiver._ i.e. a transmitter _and_ a receiver. A Google search returns LOTS of info on the RFM69 module. ---
**Author:** ![NPL](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/n/e19adc/32.png) [@NPL](https://community.openenergymonitor.org/u/NPL)\ **Post date:** [31 October 2018 21:51 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/3 "2018-10-31T21:51:43Z")
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/](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? ---
**Author:** ![Bill.Thomson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/bill.thomson/32/1834_2.png) [@Bill.Thomson](https://community.openenergymonitor.org/u/Bill.Thomson)\ **Post date:** [31 October 2018 21:57 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/4 "2018-10-31T21:57:00Z")
> [@NPL](#): > > When I look in the shop for the RFM69Pi it’s only written “Receiver”, so I’m a bit confused… Understandable. That ought to be changed to _transceiver._ @glyn.hudson ? > [@NPL](#): > > but this is a creation of OpenEnergyMonitor, isn’t it? 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. ---
**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\ **Post date:** [1 November 2018 01:58 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/5 "2018-11-01T01:58:21Z")
> [@Bill.Thomson](#): > > > When I look in the shop for the RFM69Pi it’s only written “Receiver”, so I’m a bit confused… > > Understandable. That ought to be changed to _transceiver._ @glyn.hudson ? 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. ---
**Author:** ![NPL](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/n/e19adc/32.png) [@NPL](https://community.openenergymonitor.org/u/NPL)\ **Post date:** [2 November 2018 18:01 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/6 "2018-11-02T18:01:41Z")
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.) > **[RFXtrx433XL USB HA controller](http://www.rfxcom.com/epages/78165469.sf/en_GB/?ObjectPath=%2FShops%2F78165469%2FProducts%2F18103)** > > Low priced , Receive + transmit function, Standard USB interface, Supports the largest range of sensors and actors, Supported by many Home Automation software, Easy integration in any application, Flash memory for firmware updates, CSMA-CA technology... Cheers ---
**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\ **Post date:** [2 November 2018 23:12 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/7 "2018-11-02T23:12:09Z")
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 ---
**Author:** ![NPL](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/n/e19adc/32.png) [@NPL](https://community.openenergymonitor.org/u/NPL)\ **Post date:** [5 November 2018 10:56 UTC](https://community.openenergymonitor.org/t/emonbase-to-monitor-and-control-transmitter-needed/9011/8 "2018-11-05T10:56:52Z")
Thanks for the disambiguation about the Transceiver. > [@glyn.hudson](#): > > No, the easiest way to use openhab is to installed it on the emonPi. 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 🙂 When you say emonPi, do you mean emonBase ? as I intend to use a raspberry + the RFM69Pi Thanks again