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Forum Index : Microcontroller and PC projects : WiFi for the Colour Maximite 2

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matherp
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Joined: 11/12/2012
Location: United Kingdom
Posts: 12220
Posted: 03:08pm 15 Nov 2026
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See https://mather.host/cmm2/wifi/ for full details, links to gerbers etc.
The final board is designed so it is possible to hand solder, nothing smaller than 1206, or you can get it made up by JLC. Don't get them to solder the headers, it will add significant extra cost.
Software support will be in the first V8.00.00 beta which will be posted in the next couple of days.
It has been tested with Geoff's watering controller software and works perfectly
 
Mixtel90

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Joined: 05/10/2019
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Posted: 03:13pm 15 Nov 2026
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Excellent news!
I'm hoping that you'll be considering Bluetooth then I can get rid of some wires...  ;)
Mick

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matherp
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Posted: 03:16pm 15 Nov 2026
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Give us a chance
 
Mixtel90

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Posted: 03:27pm 15 Nov 2026
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No prob. :)
On a G1, it looks like you need to stand the CMM2 on something. It looks relatively high to me. Would the answer be to use a 90 degree plug on that, and poke the board out horizontally?
Mick

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matherp
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Posted: 04:02pm 15 Nov 2026
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sound good, you just need to make sure in you use a keyed plug that it is the correct way round for the specific board G1 or G2/G3
 
PhenixRising
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Joined: 07/11/2023
Location: United Kingdom
Posts: 2154
Posted: 04:45pm 15 Nov 2026
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  matherp said  Give us a chance


Quite right; expecting any more than 25,000 tasks at any time is pushing it a bit, I'd say  

  Quote  Range: the module sits behind the computer, so a metal case or rear panel will cut its range.


Class-1 BT?   Holy moly. Is this something we have along with Class-2 or just ignored?
I have only dealt with industrial Class-1 devices and in my case, the 100m range is conservative.




External antenna possible?

  Quote  Yes. The CYW43439 can be designed to use an external antenna, but you can’t simply connect one to the chip: your PCB must route the RF output through the appropriate matching network to an antenna connector, with the layout and tuning designed for 2.4 GHz. Wi‑Fi and Bluetooth share the 2.4 GHz radio, so the antenna path serves both.

If you’re using a CYW43439-based module rather than the bare SoC, check that module’s datasheet: some have an antenna connection, while others have the antenna integrated. Changing the antenna or RF path may also affect the module’s regulatory certification.
 
Mixtel90

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Posted: 04:55pm 15 Nov 2026
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AFAIK the bump polarized 90 degree plugs are always "bump away from board", you don't have a choice.

I'm just looking at a G1. Looking down on the board from the front of it (not from the rear panel) pin 40 is bottom left (same as the wifi board) with bump to the top.

If using a 90 degree keyed header on top of the wifi board it can't work as it then puts 39 where 40 is marked on the wifi board. (fitting it to the bottom reverses the connector).

if using an un-keyed header mounted on the bottom of the wifi board then it works.

Does that make sense? It's doing my head in.
Mick

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matherp
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Posts: 12220
Posted: 05:01pm 15 Nov 2026
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You want an unkeyed right angle female header mounted to the bottom of the board for a G1. The way the pins will stick up and the wifi module will be on the top. For the G2 stick with the straight header. Of course the other approach is a male female 40pin IDC cable
 
Mixtel90

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Posted: 05:18pm 15 Nov 2026
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Yep, that's it. :)
Mick

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