0

Adafruit Gemma
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Adafruit Gemma

by WHE81 on Wed Jan 13, 2021 5:03 am

Hello,

I’m hoping to buy an Adafruit Gemma. Before I do can you tell me if the Gemma can be coded to produce different outputs please? I’m new to this, sorry! So, for instance, Gemma is configured with three button triggers: 1 activates three flashing leds, 2 flashes just green leds, 3 flashes just red leds…

I hope that makes sense. Thank you in advance,

Regards
Will

WHE81
 
Posts: 3
Joined: Tue Jan 12, 2021 11:31 am

Re: Adafruit Gemma

by dastels on Wed Jan 13, 2021 10:49 am

The Gemma should have no problem with that sort of project. Be sure to get a Gemma M0 as the older model is deprecated and doesn't work as reliably with modern USB.

There are a lot of Gemma based projects on the Adafruit Learning Guide site: https://learn.adafruit.com/search?q=gemma.

Have fun!

Dave

dastels
 
Posts: 4850
Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit Gemma

by WHE81 on Wed Jan 13, 2021 7:47 pm

Thank you for your reply. My main question is whether I can have there triggers basically

WHE81
 
Posts: 3
Joined: Tue Jan 12, 2021 11:31 am

Re: Adafruit Gemma

by dastels on Wed Jan 13, 2021 7:58 pm

It depends what you want. The Gemma has 3 I/O pads. If you use NeoPixels (https://learn.adafruit.com/adafruit-neopixel-uberguide) you can drive them with 1 connection, leaving 2 for triggers. If you need more than that you can get a different controller board (a CircuitPlasyground Express/Bluefruit or some sort of ItsyBitsy/Feather. Another alternative is to use an I2C based expander like the Seesaw (https://www.adafruit.com/product/3657) which will give you all the I/O you probably need, including 7 digital I/O pins and a NeoPixel pin.

Dave

dastels
 
Posts: 4850
Joined: Tue Oct 20, 2015 3:22 pm

Re: Adafruit Gemma

by WHE81 on Wed Jan 13, 2021 9:08 pm

Thank you Dave. If you’re interested in helping I’m sure I could buy you a beer or something!

WHE81
 
Posts: 3
Joined: Tue Jan 12, 2021 11:31 am

Re: Adafruit Gemma

by dastels on Wed Jan 13, 2021 9:44 pm

Feel free bring your questions.

Dave

dastels
 
Posts: 4850
Joined: Tue Oct 20, 2015 3:22 pm

Please be positive and constructive with your questions and comments.