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Thread: Source for ESP modules

  1. #21
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    Default Re: Source for ESP modules

    What firmware are you running in them? I am using 3.0 with Shelby's flash tool. The 4 that I tested all did the same thing. Loaded fine and connected dhcp, but lost everything on a power cycle.

  2. #22
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    Default Re: Source for ESP modules

    If the configuration settings that you are setting in the web GUI are not persisting on the ESP, that's the classic symptom of the Puya flash chip problem. While I haven't personally seen this problem (I don't have any puya modules) what I've read is that you can actually read the "PUYA" name on the flash chip of the ESP01 module. You may need a magnifying glass, but you should be able to actually identify the chip and know you have a bad module.

  3. #23
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    Default Re: Source for ESP modules

    Quote Originally Posted by jchuchla View Post
    If the configuration settings that you are setting in the web GUI are not persisting on the ESP, that's the classic symptom of the Puya flash chip problem. While I haven't personally seen this problem (I don't have any puya modules) what I've read is that you can actually read the "PUYA" name on the flash chip of the ESP01 module. You may need a magnifying glass, but you should be able to actually identify the chip and know you have a bad module.
    The puya chip = ver 2 is significantly visually smaller than esp version 1 .
    The site he purchased from provides in depth videos on this also .
    I have both the puya and the original chipped esp modules .
    The modules are not bad or defective , the puya just does not function as expected with ver 3 of the pixelstick firmware .

  4. #24
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    Default Re: Source for ESP modules

    The terminology is subjective. You're right, they're not defective, but they are not suitable. Modules with Puya chips are indeed bad for the purpose of ESPixelStick. And also for pretty much any ESP application that's based on and compiled from the Arduino ESP environment.

    I'm not sure if the amazon listing is still the same as it was when he posted the link. But the product currently being sold under that link is the "Version II" and you can clearly see PUYA printed on the flash chip. Those aren't going to work as ESPixelSticks.

  5. #25
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    Default Re: Source for ESP modules

    They will work with the an earlier version of the firmware , link in other thread.

  6. #26
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    Default Re: Source for ESP modules

    I returned the ones that I bought and didn't use. I really don't want to have to mess with it. I need them all to work with the same firmware load.

    Just having bad luck with these. I'll figure it out eventually.

  7. #27
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    Default Re: Source for ESP modules

    Quote Originally Posted by JLStout View Post
    I returned the ones that I bought and didn't use. I really don't want to have to mess with it. I need them all to work with the same firmware load.

    Just having bad luck with these. I'll figure it out eventually.
    You will gain valuable experience by messing with it !

  8. #28
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    Default Re: Source for ESP modules

    I hope so Angus. I am trying to get 15 of these to work for my house and my neighbors house. Strings already done, sequences done for the most part, just cant get these things to work right. New modules hopefully today or tomorrow.

  9. #29
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    Default Re: Source for ESP modules

    You will overcome this minor hurdle
    I experimented with these for months in spare time to get an understanding of how to program them with various methods
    and firmwares.

    One thing to keep in mind with these and most all other wireless hardware being used for this hobby , it will not be as reliable as directly wiring to a device .
    It would be a gamble to bank on a flawless performance from these modules for a complete light show .

    best of luck to you

  10. #30
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    Default Re: Source for ESP modules

    It's not just Puya with the problem. I recently got 20 ESP Modules on AliExpress and from photo I was pretty sure it didn't
    have the Puya Flash...

    Model Number: Upgraded version ESP-01 ESP8266 serial WIFI wireless module wireless tranciever
    Brand Name: ACELEX
    Price: US $1.62 / piece

    ... when I received the modules I checked and the Flash branding was MK. They programmed OK but after programming would not boot in DHCP mode, in fact there was NO output (text) in the serial output window (was blank). I tried a few of the modules and same result so I ordered Windbond Flash chips from Digikey... DK part number W25Q80DVSNIGCT-ND (cut tape). I received today, changed a few and that fixed the problem... they programed went into DHCP mode I and was able to connect to module from my browser. Looks like this will be resolved at some point but I didn't feel like waiting. So beware of the MK branded Flash chips and for now look for a Flash chip that is proven
    .


    MK Flash.jpg

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