BLE Reccomendation

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DirectorVicci
 
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BLE Reccomendation

Post by DirectorVicci »

Hi,

Apologies if this was asked before, I tried searching and didn't find any questions like this.

1. I need to create a standalone BLE + 1 Neopixel + Battery (x20) in a BLE Mesh. Which products do I need to get to make it the smallest size possible for wearables?

2. Also can the BLE device operate 2 servos in a Prop remotely?

Thank you in advance.

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blnkjns
 
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Re: BLE Reccomendation

Post by blnkjns »

I believe the nRF52840 test dongle is pretty small. It has a USB plug on one side, but if you break that off it is even smaller. It also has a RGB LED on it by default.
https://docs.zephyrproject.org/latest/b ... index.html
https://www.nordicsemi.com/Products/Dev ... 840-dongle

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mikeysklar
 
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Re: BLE Reccomendation

Post by mikeysklar »

The nRF52840 Glasses driver board gets you BLE + NeoPixel and it a deal 50% off.

https://www.adafruit.com/product/5217

In terms of the servos you wanted to connect those to a FeatherWing Prop-Maker and run them remotely? You would need another controller. Ideally a Feather board to drive the Prop-Maker FeatherWing.

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DirectorVicci
 
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Re: BLE Reccomendation

Post by DirectorVicci »

Thank you.. Here is what I want to do exactly..

1x main board controller connected to BLE and a few NeoPixels, which will also control the following(which board can control up to 20 BLEs?):

- 1x BLE + power, connected to 2 Servos for a helmet mask + two NeoPixels for eyes.
- 18x BLE + power + one NeoPixel (to communicate with the main board and the colors controlled).

Would the Feather line be able to accomplish all that?

Ps., Would love to know the part numbers so I could make one large order, Thanks.

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mikeysklar
 
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Re: BLE Reccomendation

Post by mikeysklar »

This sounds like quite a costume.

You could use a nRF52840 based for what you propose. Either the Adafruit Feather nRF52840 or the Glasses Driver:

https://www.adafruit.com/product/4062
https://www.adafruit.com/product/5217

You will have to setup the main helmet board with servos as a 'Central BLEUART' so the others can communicate with it.

The main issue you will want to figure out before ordering all your hardware is how many BLE clients you can support. The firmware is supposed to allow between 10-20, but there is some changes you need to make to get passed 4 clients.

https://github.com/adafruit/Adafruit_nR ... issues/288

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DirectorVicci
 
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Re: BLE Reccomendation

Post by DirectorVicci »

Thanks for the explanation and recommendations. I noticed a lot of products are out of stock. I will look into it when everything is back in stock.

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mikeysklar
 
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Re: BLE Reccomendation

Post by mikeysklar »

Due to chip shortage many components have been delayed for months. You can turn on notifications or check the digikey links on products that Adafruit is out of stock on.

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