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Adafruit Flora & Power Supply
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Adafruit Flora & Power Supply

by masterbaron on Wed May 15, 2019 9:10 am

Let me start by saying - I know nothing about micro controllers - adafruit or even IDE - I'm a beginner!

Start => I want a neopixel ring to animate a project that is permanent - not a wearable - therefore I want permanent power via a power supply.
Question 1 - is the Flora the right micro controller for the 24 LED neopixel
Question 2 - can I use a non-switching PS connected to the JST - what will happen if I connect the USB at the same time - do I use VBATT instead and how?
Question 3 - which PS and what rating
Question 4 - I'm using a MAC will the Flora work with it?
Question 5 - who can I talk to in realtime about Adafruit and what I need to complete the project

Many thanks for helping this Noob!

masterbaron
 
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Re: Adafruit Flora & Power Supply

by adafruit_support_bill on Wed May 15, 2019 9:31 am

Question 1 - is the Flora the right micro controller for the 24 LED neopixel

Yes. it will easily handle 24 Neopixels.
Question 2 - can I use a non-switching PS connected to the JST - what will happen if I connect the USB at the same time - do I use VBATT instead and how?

You can power it from battery or power supply via the JST connector. There is a switch on the board you can use to disconnect the battery when plugged into USB.
Powering via VBATT is not recommended: https://learn.adafruit.com/getting-star ... tt-pad-6-6
Question 3 - which PS and what rating

Assuming that you want to power the Neopixels with the same supply, something in the 3.6v-4.5v range that can deliver 1A or more would be ideal.
Question 4 - I'm using a MAC will the Flora work with it?

Yes.
Question 5 - who can I talk to in realtime about Adafruit and what I need to complete the project

We have engineers monitoring the forums pretty much around the clock.

adafruit_support_bill
 
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Re: Adafruit Flora & Power Supply

by masterbaron on Wed May 15, 2019 10:04 am

Thank you for that response!

It's feels a lot better to know there's real feedback to the forums since there's no phone support - thank you,

So - if I understand ... while programming the Flora via USB - the on-board switch goes to OFF since power is derived from USB - any harm leaving the PS connected while attached to USB during programming?

Question 1 - Is your 9v PS too much for the Flora and 24 LED Neopixel
Question 2 - the Neopixel will draw power through the Flora
Question 3 - OK - I'd like to purchase everything I need but the Starter pack seems to have more than I need - to set this up permanently what is the entire list of components?

Again - my goal is to animate the ring that is all - maybe one day I'll WiFi it to address "on the fly" pattern changes via iPhone if possible ...

That will be it for me today while I take a deep dive into how to program these little gems -

Can't say it enough ... out of the dark into the light - thank you!

masterbaron
 
Posts: 3
Joined: Wed May 15, 2019 9:01 am

Re: Adafruit Flora & Power Supply

by adafruit_support_bill on Wed May 15, 2019 11:30 am

It is generally not an issue to leave a battery connected to the JST while plugged into USB.

Question 1 - Is your 9v PS too much for the Flora and 24 LED Neopixel

Yes. Neopixels can be damaged by that voltage. For use with the Flora you should power them with something in the range of 3.7v-4.5v.

Question 2 - the Neopixel will draw power through the Flora

You can use the VBATT pin to power them. It is also possible to power them separately if desired. But for small projects it is easier to use a single supply.

Question 3 - OK - I'd like to purchase everything I need but the Starter pack seems to have more than I need - to set this up permanently what is the entire list of components?

Aside from the Flora and the Neopixel ring, you would need a power source and some wire to hook it up with.

Ideal power sources for the Flora are any of the 3.7v LiPo cells. Or a 3xAA or 3xAAA battery pack:
https://www.adafruit.com/product/3287
https://www.adafruit.com/product/727

If you use a LiPo cell: https://www.adafruit.com/category/574
You will need a charger also: https://www.adafruit.com/category/575

For a project like this, a good alternative to the Flora would be one of the Feathers. These have integral LiPo chargers, so they will charge up the battery while connected to USB and run from the battery when you unplug. The Feather 32U4 is based on the same processor as the Flora: https://www.adafruit.com/product/2771

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Re: Adafruit Flora & Power Supply

by masterbaron on Wed May 15, 2019 2:59 pm

Again, many thanks!

I just purchased the Neopixel ring, Flora, JST plug and USB cable. I'm currently sourcing the power supply. I'm sure there will be a ton of questions if not here I'll definitely be asking in the programming and setup threads.

Thanks again!!

masterbaron
 
Posts: 3
Joined: Wed May 15, 2019 9:01 am

Please be positive and constructive with your questions and comments.