Riddles? The First Arduino compatible 5GHz Wi-Fi Chip



The first cheap chip supporting 5GHz Wi-Fi is the Realtek RTL8720 and it should be Arduino compatible. But is it any good? And which tricks do we need to know? Or is it better to wait for the new ESP32, which should also support 5GHz Wi-Fi? Let’s test it out! And discover that the manufacturer included a multi-level adventure game, free of charge.
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Links:
RTL8720 / BW16 %GHz WiFi : https://s.click.aliexpress.com/e/_9AV5GR
ESP32 Dev Board : https://s.click.aliexpress.com/e/_ApGhKT
RTL8722DM https://www.seeedstudio.com/Ameba-RTL8722DM-mini-EVB-Arduino-WiFi-Shield-p-5055.html

BW16 Getting started: https://www.amebaiot.com/en/amebad-bw16-arduino-getting-started/Approximate Library: https://github.com/davidchatting
BW16 Datasheet: https://www.futurashop.it/image/catalog/data/Download/2846-RTL8720DN.pdf
Spectran V6: https://aaronia-shop.com/products/spectrum-analyzer/real-time

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20 thoughts on “Riddles? The First Arduino compatible 5GHz Wi-Fi Chip

  • October 17, 2021 at 8:33 am
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    Cool board. Good competition for espressif in DIY wireless mcu market. Should expect a refined library and documentation from them.

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  • October 17, 2021 at 8:33 am
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    9:24 Haha, "1. Connect LOG_TX (PA7)" but "3. Disconnect LOG_TX (PA8)". Well, PA7 or PA8 – which is it??? Seems PA8 ist actually LOG_RX (well, or is it?). That thing is one hell of a mess… Clearly no one has ever reviewed any of the documentation (nor the PCB/design). Btw: Your "BW16 Getting started" link in the description doesn't work – the URL got mixed up with the description of the following link…

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  • October 17, 2021 at 8:33 am
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    What is the difference between 5 and 2.4ghz when it comes to power consumption? How much power does it take to find the AP, connect and send an http packet?

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  • October 17, 2021 at 8:33 am
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    I love 5 GHz WiFi. Only my sprawling Ethernet network is even better.
    If I wouldn't have some legacy devices which only support 2.4 GHz I would turn off 2.4 GHz completely.
    Also my Mesh-Wifi has very little configuration, so I can't disable 2.4 GHz anyway.

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  • October 17, 2021 at 8:33 am
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    Seems that this abomination was designed by a committee, perhaps one from deep inside the EU bureaucracy? If 5GHz at low speeds is all that is making it relevant, surely there is an I2C connected 5GHz daughter board that can be used with an existing Arduino compatible for IOT uses?

    Reply
  • October 17, 2021 at 8:33 am
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    More double-button nonsense to program the chip. I am getting flashbacks from my struggles with the original ESP8266's. They still like to use the 2mm pitch pins on the rim.

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  • October 17, 2021 at 8:33 am
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    i couldn't even get the blue pill board to load so I'm giving this one a wide berth. Thank you.

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  • October 17, 2021 at 8:33 am
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    These Realtek Amebas have been making powerful but poorly documented , hard to program WiFi chips for like 7 years now

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  • October 17, 2021 at 8:33 am
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    I admire your stubborness and patience, for me such ill-documented products are no-goes!

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  • October 17, 2021 at 8:33 am
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    Still watching the video… but I seem to remember that some big exploits were found in Realteks wifi stuff recently.

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  • October 17, 2021 at 8:33 am
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    thanks a lot for explaining to me to ignore these boards for the moment – no 5 GHz needed ftm. You are quite effective 🙂

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  • October 17, 2021 at 8:33 am
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    I like the humor in this – I have a couple of these boards waiting for me to have enough time to play with them and now, at least, I know what to expect. :). Doesn't seem TOO different than the standard "every chip vendor does their own thing and takes their sweet time realizing that there are standards they should adhere to", but it's good to have had someone so good at explaining hit the road bumps first…

    Thanks for another great video.

    Reply

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