What's so special about flair USB power supply?

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Dzor
  • Edited

I have two pucks. I lost USB brick for one of them. For the second one the brick and cable were not provided the box for some reason!

So I am trying to power them from other power supplies and I am getting issues with the known unresponsiveness to buttons etc. I believe the problem is due to ESP8266 that flair uses. https://youtu.be/6SdyImetbp8?t=0h2m36s

The problem gets exubrated when firmware updates itself to the latest one.

It's hard to nail it down. It works for some combinations of cables and chargers, but not all. It's hard to find a pattern. (So far DJI charger seems ok with some cables on the updated firmware).

 

1. Is the stable voltage the only thing to ensure when powering flair pucks?

2. Or did you do some other tricks like embedding resistor ID in the original cable?

3. Perhaps shield need to be connected to the ground to allow normal boot?

 

I thought I will ask here to save myself some time testing this and also to help others so these devices don't become useless after loosing a cable or USB brick.

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    Flair Customer Support
    • Edited

    The Flair cable is a power-only cable.

    Most non-data cables _should_ work with any adapter.

    However, non-data cables can vary. Some non-data cables have D+ and D- (two out of the 5 wires that are in micro USB) tied together, shorted to ground, etc. It’s not always super clear. But as long as D+ and D- are floating on both ends (not connected to each other or shorted to ground or VDD), then the cable should work.

    All the best,
    Finn
    Flair Tech Support

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  • Avatar
    Dzor

    I noticed, the battery holder tabs have 3.3v when connected with USB cable. I added there 470uF capacitor, but that didn't help.

    Next I started testing other cables and chargers that I have and I found out:
    - DJI Spark charger and OnePlus 3t Dash charger work with some! cables
    - WyzeCam flat 3m long cable works with even the crappiest chargers

    I found another, generic 1.2m cable that also works with all the chargers I have. That's what I am going to use.

    Another generic, almost same looking 1.2m cable doesn't work with none of the chargers.

    So far I have no idea what makes it work.

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