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MarkR42 / malenki-nano

Speed controller and receiver for small robots
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Obtaining the PCB Antenna #4

Closed mattinglot closed 2 years ago

mattinglot commented 2 years ago

Having trouble figuring out the PCB Antenna piece and wondering what the secret here is.

As far as I can tell that's not part of the main PCB? At least I can't find it in KiCad.

Thanks and apologies if I'm missing something obvious.

Edit: Looking closer at a photo of the production product, it seems like you're not just using the A7105 chip but the whole module? Do you have a link where to source the correct part?

For greater clarity here is what I see in KiCad https://capture.dropbox.com/fnqKQ7R3vsRxjTnc

VS https://shop.bristolbotbuilders.com/product/malenki/

MarkR42 commented 2 years ago

Hi,

I haven't 3d-modelled the radio module.

The radio module is commonly known as "MD7105-SY" and is widely available (just now) on Aliexpress. I haven't found a more reliable vendor of them yet.

Some of the more recent ones use the A7106 chip which seems to be totally compatible.

mattinglot commented 2 years ago

Thanks. Will order one of these then. I totally thought at first that your PCB had the antenna and all the parts on it, hence the confusion. Using a module that's got all that built in makes way more sense. Appreciate the help (again).