Setting Up the Range Probe

968x601 Setting Up Range

Setting Up the Range Probe

Setting Up a Range Probe for Data Logging

The Range probe can be purchased from Supermechanical.

  1. Attach the Range probe to your iOS device.
  2. Navigate to the Probes list from Roastmaster’s Utilities window.
  3. If you have not already purchased the Data Logging option, tap “Data Logging Store” and enable Data Logging. Roastmaster will guide you through the purchase.
  4. Tap the + button to add a new Probe.
  5. If the Range is attached, the Status field should display “Linked”, and report the current probe temperature.
  6. Tap “Save”.

  1. Katie
    KatieJun 02, 2017

    Hi Danny,

    I have purchased your app with the data logging option, purchased a range probe, and plugged it in, and it still isn’t showing “linked” in the status. What am I missing?

    Thank you,


    • Danny Hall
      Danny HallJun 02, 2017

      Hi Katie

      The Range App is probably running in the background. It may autolaunch when the Range is plugged in, and the probe will only accept 1 connection at a time. In order for Roastmaster to use it, you’ll need to force quit the Range app (double tap the home button and swipe up on the Range App). Roastmaster should then be able to access it.

  2. Katie
    KatieJun 04, 2017

    Hey Danny,

    I haven’t got the Range app, any other ideas?

    • Danny Hall
      Danny HallJun 05, 2017

      Is microphone access allowed for Roastmaster? You can check this in iOS Settings > Privacy > Microphone. Verify that Roastmaster is turned on.

      Beyond that, if you’re using a newer iPhone that requires a “stereo plug > lightning” adapter, the connection might get flaky if there’s lint stuck in the lightning port, or if the port itself is having problems. I’m having that problem right now with my own iPhone. I’m bad for pocket lint, and nothing is getting a good connection at the moment via the lightning port – my headphone controls aren’t working correctly, etc. So, that would be another thing to check. I guess the same would apply to a traditional headphone jack, though they seem to be more resilient to pocket lint.

      Which Range probe are you using?

    • Danny Hall
      Danny HallJun 05, 2017

      Better yet, if you can tell me 1) Range probe type, 2) iOS model, 3) iOS version and 4) port type, I’ll test on my end to make sure there’s not an issue that I don’t know about.

      • Katie
        KatieJun 12, 2017

        Hey Danny,

        Yep microphone is allowed access in settings. The range probe I have is the dial. iOS version 10.3.2
        iPhone SE using the AUX inlet.
        When I plug the probe into my phone, the headphones volume selector flashes on the screen, and it keeps doing this for a minute or two. But the app says “a probe is offline”.

        • Danny Hall
          Danny HallJun 12, 2017

          Ahhh – I understand now. Roastmaster hasn’t officially adopted support for the dial yet. I just received my kickstarter test units about a week ago. I just now tried it with one of the new Dial probes, and I get the same behavior you’re describing. Connections work as expected on the traditional Range probes, though.

          I’ll reach out to the manufacturer this morning and see what their word on those probes. I talked to them last week, and they said that an official SDK for the Dial is still in the works. I’m guessing that the probes themselves are not compatible with the current Range SDK via the headphone jack. It would seem they function differently than the traditional Range probes. I’ll let you know what they say.

          • Sig
            SigMar 27, 2019

            Any update on if the dial is working over Bluetooth? The original range probes are getting hard to find, I’m hoping to avoid paying out the big bucks for a thermaq blue, so any cheaper supported alternatives would be greatly appreciated!

          • Danny Hall
            Danny HallMar 28, 2019

            Sorry – no updates. After the Boston conference is over, I have a lot of folks I need to contact. I want to reach out to the owner and find out. The last we spoke, he was going to send the SDK as soon as he had the programming finished. At this point, I imagine that the idea of 3rd party developer support was abandoned on their end, but I’m not sure.

  3. Katie
    KatieJun 13, 2017

    Right, bummer. Yeah thanks, that would be great.

    Another query I had, I’m wondering if Roastmaster displays the rate of change in temp per minute during a roast, is that what the third display on the taco shows?

    Thanks Danny.

    • Danny Hall
      Danny HallJun 14, 2017

      Hi Katie. Sorry – the manufacturer confirmed. The probes included with the “Dial” lack the necessary circuitry in the handle that the actual “Range” probes have, so they can only be used in conjunction with the Dial over Bluetooth. Only the traditional Range probes can be plugged directly into the headphone port (or lightning>headphone adapter).

      They estimate 3 months for the Bluetooth SDK for the Dial is completed. I’ll be working with them to include support as quickly as possible.

      In the roast analyzer, Roastmaster will show 3 different deltas in the top above the graph area when a reading curve is selected. You can configure those three times (in seconds) in Preferences > Roast Analyzer > Delta X Interval. I’m not sure what you mean by taco – assuming that’s autocorrect? 🙂

  4. Katie
    KatieJun 23, 2017

    Hi Danny,

    Sorry I thought I replied to this already. Thanks for chasing that up, I’ve ordered their older probe now.

    The deltas you’re referring to was what I was after, thanks for that info.



  5. Eddy
    EddySep 10, 2018

    Danny, I have Gene Café Roaster. It’s a closed drum, and rotates the entire time. How do I take temperature readings with the Range Probe, and will the 3″ version of the probe work?

    • Danny Hall
      Danny HallSep 17, 2018

      Hi Eddy.

      Sorry for the late reply, I was out of the office last week.

      No, no traditional wired probes will work with the Gene Cafe, due to the unique way in which the drum rotates.

      Some users have made use of Roastmaster’s Open Source RDP (Roastmaster Datagram Protocol) to build small battery-operated electronics based on an Ethernet-enabled chip called the Feather Huzzah. The small can assembly can adhere to the drum itself, and rotate with it. This works really well.

      I have a sample project on GitHub for programming the Huzzah with the Arduino Interface, to take readings from a Max thermocouple chip and send them over Ethernet using the RDP protocol.

      This, of course, is a DIY project, and requires building the unit and soldering connections, and programming the Huzzah. If you’re up to it, I think you’ll love the outcome. If you want any more specific info, just let me know.


Leave a Reply