Questions tagged [feather]

The Adafruit Feather are a complete line of development boards from Adafruit that are both standalone and stackable. They're able to be powered by lipo batteries for on-the-go use or by their micro-USB plugs for stationary projects. Feathers are flexible, portable, and as light as their namesake.

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Adafruit Featherwing Latching Relay lamp switch

I am brand new to Arduino. So I apologize in advance if I have missed the information I am looking for. I have looked for hours and cannot find any help with a Adafruit Featherwing Latching Relay(#...
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37 views

RTC DS3231 headache

I've been trying to get an RTC clock to display time. I tried using 3 different RTC modules: standard ds1307, pcf8523 and ds3231. They all give the same results: wrong time and no incrementing. It ...
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rfm69 on M0 Express… init() doesn't work

I have already connected succesfully the rfm69 on my Feather M0 Express... but I cannot do it again. The connections are (in the order of the rfm69): Vin -> 3V Gnd -> Gnd En -> (nothing) G0 -> 9 ...
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244 views

Cannot successfully implement singleton

I have spent the better part of today trying to figure out why I can't get this to work... I have this project where, because of previous design considerations, have implemented a singleton class that ...
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Neopixel code not working on Adafruit Feather board

I have connected a single neopixel to my Adafruit Feather board, running Arduino software. The power pin is connected to 3V on the Feather. The data-in pin is connected to pin 15 on the Feather. As ...
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92 views

Keeping Adafruit Feather charged

I'm creating a keyboard for someone using an Adafruit Feather 32u4 Bluetooth LE as the brains. The case I want to put in into would be hard to remove to charge the battery. Can I use this USB LiIon/...
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1answer
843 views

High frequency PWM on Adafruit Feather M0

I'm trying to get a Bluefruit Feather M0, which has a SAMD21G, to do high frequency PWM by accessing timer registers directly, rather than using the Arduino API to do PWM at ~1kHz or ~500Hz. Actual ...
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1answer
60 views

feather 32u4 servo

I am attempting a project where I use a feather 32u4 to control a servo. It is controlled using the buttons on an attached oled featherwing to set the servo to 3 different values. The code that was ...
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1answer
241 views

ESP8266 (Huzzah Feather) I2C scanner finds nothing

I am trying to address an I2C device on my Huzzah Feather (Adafruit) ESP8266, but the I2C scanner tool does not detect anything. All is sufficiently powered and quadruple checked the wiring. Is ...
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110 views

Adding bootloader to Feather M0 Bluefruit LE

I want to make a custom Feather M0 Bluefruit LE. I know this means that I will have to add a bootloader to the ATSAMD21G18. I have seen that there are many useful articles in relation to adding ...
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361 views

How do I send non-ASCII keys over the BLE HID connection using an Adafruit nRF52 Feather?

The hid_keyboard example sketch shows how to send ASCII characters, but how can I send non-ASCII codes like the F1 key, or keys with shift/control modifiers?