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Thread: Pixelpops/stick wifi module question (esp8266 esp-01)

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  1. #1
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    Default Pixelpops/stick wifi module question (esp8266 esp-01)

    Just starting to brainstorm for this year's display during the end of my "off season"/break. One of the things I had been interested in looking into, was using/building some pixelpops/espixelsticks. Now I've found some of the resources about the BOM and build instructions, so I have a rough idea. But one thing keeps returning to me about the wifi modules used (I believe ESP8266 ESP-01), and I can't recall the specifics. I seem to remember reading something about a problem with some of these depending on the source. As in, you could get the same part number from two different sources, and one would be fine, and the other unusable. Maybe something about how you couldn't program one kind properly? Either way, I'm trying to figure out how to tell which modules are ok for this purpose, or what makes some of them unuseable. I found a listing here for example, and trying to figure out if these would be fine https://www.aliexpress.com/item/32341788594.html
    Last edited by XmasinVancouver; 08-30-2019 at 01:20 AM.

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    One of the issues is with modules that use PUYA chips. It doesn't appear that the linked ones do. The PUYA chips need a fix to the code that will properly write the data to them or they "forget" what was written.

    Those also say in the Q&A that they are 512KB boards. Someone can correct me but I think the current standard board is the 1MB board. Also not sure if it matters for the current pixel code.

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    Quote Originally Posted by MikeKrebs View Post
    One of the issues is with modules that use PUYA chips. It doesn't appear that the linked ones do. The PUYA chips need a fix to the code that will properly write the data to them or they "forget" what was written.

    Those also say in the Q&A that they are 512KB boards. Someone can correct me but I think the current standard board is the 1MB board. Also not sure if it matters for the current pixel code.

    I have to be honest, I didn't actually fully review that item listing. I just liked the price and needed an example of the module for the post. Dang....I can do all this kind of work if I have guidance, but I'm no electrical engineer. Didn't even occur to me that the exact part number listed in the BOM guides would have variants to the capacity. I thought that WAS what the part number was for. Getting the correct config. Thanks for the quick response Mike. So as far as you can tell, unless there is an issue with the 512KB capacity as per someone letting me know here, the PUYA chip was the main issue I was vaguely remembering, and these are not some of those?

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    FYI: Last time I checked the code was big enough that if you used the 512KB version the Over-The-Air update would not have enough space to work properly. I would not purchase the 512KB version ESP01. If I remember correctly, the board color was changed when they went from 512KB to 1MB. I think the 1MB devices have a black PCB. The PUYA chip is a bit more difficult to detect.


    2019 - Just moved into a new home (yet another change of plans). Will be dim but not dark. Too much to do at the new place to leave time for a show.
    https://www.youtube.com/channel/UCyX...ttrsZNARkUce0Q

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    Damn! Anybody have or know of a good, reasonably priced source for the proper ESP-01 modules?

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    I do not have personal experience with this company but they understand the puya problem and proactively check
    https://www.addicore.com/ESP8266-ESP-01-p/130.htm
    Someone from their company has been on the forums occassionally as well. $4 is not <$2 but unless you are doing a ton of boards, it is probably ok.

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    Quote Originally Posted by MikeKrebs View Post
    I do not have personal experience with this company but they understand the puya problem and proactively check
    https://www.addicore.com/ESP8266-ESP-01-p/130.htm
    Someone from their company has been on the forums occassionally as well. $4 is not <$2 but unless you are doing a ton of boards, it is probably ok.
    Thanks for that Mike. I will likely give them a shot. And as I'm writing this, came across this source https://www.aliexpress.com/item/3227...chweb201603_53

    Assuming the pic isn't just a stock picture, black board, which as mentioned above may indicate the 1mb variant. Any feedback on that one from anyone? $4 USD is roughy $5.35 Canadian (assuming you didn't get marked up or squeezed by the exchanger...hahahahahaha....that's a good one). $5.35 VS $1.52 isn't insignificant when you factor the costs of building maybe 10 of the units. But on the flip side, at least Addicore openly confirms they aren't PUYA chips...If the PUYA chips have such an issue with being programmed, how is it that it's such a toss up as to whether your still getting a (as far as I understand the problem) faulty part?

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    Quote Originally Posted by XmasinVancouver View Post
    Thanks for that Mike. I will likely give them a shot. And as I'm writing this, came across this source https://www.aliexpress.com/item/3227...chweb201603_53

    Assuming the pic isn't just a stock picture, black board, which as mentioned above may indicate the 1mb variant. Any feedback on that one from anyone? $4 USD is roughy $5.35 Canadian (assuming you didn't get marked up or squeezed by the exchanger...hahahahahaha....that's a good one). $5.35 VS $1.52 isn't insignificant when you factor the costs of building maybe 10 of the units. But on the flip side, at least Addicore openly confirms they aren't PUYA chips...If the PUYA chips have such an issue with being programmed, how is it that it's such a toss up as to whether your still getting a (as far as I understand the problem) faulty part?
    It looks like that is just a stock pic of an esp-01, and those cheap aliexpress ones almost always have the Puya chips, not trying to knock them but they are a crapshoot, Dave even talked to his vendor, that he did not want the Puya chipped units, and still ended up w/ a portion of the order w/ them, the addicore ones do guarantee them to be non-puya.
    Matt

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    Just a warning to those buying ESP-01 from an untested source.....they are likely PUYA chips. If you risk it and they turn out to be PUYA units, and you can solder SMD chips, then you can replace the memory chip. I've done about 20 of them. Here is a link to the ones I used.

    W25Q32FVSIG
    https://www.aliexpress.com/item/3283...27424c4dTBv9gR
    They have lowered the price since I last bought. Assume the same product.
    In Lights Therapy

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    Default Re: Pixelpops/stick wifi module question (esp8266 esp-01)

    I have also started using the WeMos device. Nice little board.


    2019 - Just moved into a new home (yet another change of plans). Will be dim but not dark. Too much to do at the new place to leave time for a show.
    https://www.youtube.com/channel/UCyX...ttrsZNARkUce0Q

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