A busy Week

It has been a busy week this week – with lots of new things happening.

Firstly, there is a brand new update to the RFLINK software, IMHO the best software around for decoding and transmitting signals for a wide range of RF devices – such as weather stations and remote controls – in my case using 433Mhz.  See the short video update I did on this one.

Here’s a link to a blog entry I wrote months ago on the same subject. tmpC114Then I’ve been working on the DPS5020 and DPS3003 power supply boards which have provided HOURS of entertainment.  I’ve spoken with the designer and I think this stuff has a good future because of the kind of direct support they are keen to give – and because the stuff just works. In a couple of weeks there’s a new board from the same source and when my new scope arrives I’ll be using that and the load tester to give it a hammering.

I’ve had a play with my little EM125 pocket (well, large pocket) oscilloscope and in the process of playing with these two, discovered the need for a decent signal generator and dummy load – both of these are on the way and will be covered in the coming weeks – along with some other exciting incoming stuff like a new 3D printer and a “proper” desktop scope.


MEANWHILE I’ve not gone off the boil with the uninterruptible supply, FAR from it but Aidan and I have been waiting for a PCB to turn up. It came earlier this week and we’ve been getting that working – of course, as you might expect, in the process of doing that we’ve thought of better ways of doing things, so the present PCB is going in the bin and a newer, smaller, better design will be forthcoming, most likely before Christmas.

Oh and not to  forget the new Alexa feature – using it as an Intercom – that is MARVELLOUS.

Lots happing in the next few weeks….so make a note to look in – or better, if you’ve not yet subscribed to the newsletter on the right panel of the blog) – please do!

A quick thanks to all of you who feed back constantly on the blog and on my videos and for all those who provide new ideas and new links – what a great time to be interested in technology.


7 thoughts on “A busy Week

  1. I'm using rflink to intercept the output of my weather station, it feeds info into nodered (Rpi3) modifying a Bigtimer output to switch lights on and off around my home (mqtt to esp8266s).
    I have wireless doorbell buttons in each room to override the outputs.
    Thank you for the inspiration and technical knowhow.

  2. I can't afford an rflink but wanted to receive and send 433MHz to and from node-red, so I got a Chinese Uno clone (I tried it with a nano but it didn't have enough oooomph!) A pair of the superheterodyne TX/RX modules and some vero board - total cost about £4.50 - I couldn't find any Arduino transceiver sketches online (I suck at coding but am learning!) so I cobbled together the RF receive demo sketch and something else I found online and lo and behold it works!

    If anyone wants the sketch just drop me a reply 🙂

      1. Hi Pete,

        I'm just guessing that the nano didn't have enough power, I tried it exactly the same configuration as above and it would transmit a whole 2 inches, receive was marginally better but not much. I also tried using 2 nanos one for TX one for RX and that was fine but kind of defeats the object of the whole "transceiver" ideal 🙂

        I found that the node "deduplicator" very useful when dealing with 433MHz remotes.

        Keep up the fine work Sir. 🙂

  3. Hi Pete, thinking of trying to use Rflink and Alexa with node-red to automate a few things. Like sending RF codes as TV remote but also wondered if you have tried any of the sonoff replacement light switches or RF sonoff relays with Rflink. Really enjoying the blog and YouTube channel. Cheers

    1. Hi there Malcolm

      The way I use Sonoff and RF - is to use the RF as merely one of many ways to get info into Node-Red - which then controls a raft of output devices including Sonoffs by MQTT.

      1. Thanks Pete.
        I have started small and have a couple of Sonoff Basic Relay switches I've reflashed and have my Rpi running your script , Node-Red , Mqtt, I've played with Alexa(both the Local Node and also via AWS). I really like the idea of just using Node-Red to control everything and avoid using the various hubs everyone is selling. I was hoping to use RKLink via Node-Red to output RF to control these wall switches.


        I want to use RF for these as its a straight swap existing for new wallplates(however I'm not yet sure they can handle multi-way switching)

        If I can get RF out from Node-Red via RFlink then I can start to control my VirginMedia V6 Box that has an RF Remote capability and then hook that to Alexa Local.

        I've seen the RM Pro device but not seen anyone use it successfully from Node-Red. Again I want to avoid using multiple android apps to control different devices if I can help it.

        I really appreciate you sharing your work. Thanks

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