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    Julian

    @Julian

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    Posts made by Julian

    • How-To: Using JSON & Map with MQTT

      Since this took me a while to figure out the best method, I thought I would share.

      If you are posting JSON data to MQTT and want to use a property of a topic to populate a label:

      Posting JSON to MQTT:
      0_1583017358008_8ba32501-f08b-4a58-adc0-487669eb9160-image.png

      Getting a value from a specific property of a topic:
      0_1583017407496_2c7f7627-7a9f-43b6-9297-2a2caae9ba72-image.png

      Annoyingly, without the ability to set the retain flag and QoS in MQTT, UIflow's support of it remains just a toy.

      In addition, we really need a flag that tells us when the MQTT connection has actually started because there seems to be a significant delay before it works.

      posted in UIFlow
      J
      Julian
    • RE: Lesson 14. UI Flow. Hello M5 UI Flow

      @dimi Nice start but how do we include other libraries so we can interface to other systems over http/mqtt/etc?

      posted in Lessons and Guides
      J
      Julian
    • RE: pneumatic seeder

      There is an Arduino IDE stepper motor example listed on the M5stack site - I think it links to this forum. It is very simplistic, controlling a stepper to make a simple "clock" but it should be enough to get you started.

      posted in PROJECTS
      J
      Julian
    • RE: Visual keyboard

      @chb Have you tried the M5ez library?

      https://github.com/ropg/M5ez

      posted in PROJECTS
      J
      Julian
    • RE: Need real power consumption data

      Does anyone now have any updates on this question? It would be really helpful to get some more info.

      posted in PRODUCTS
      J
      Julian