Hi, I need help choosing a feather. I have buildt a garage door sensor at school with a feather huzza 32, 128x64 oled screen mono chrome and a RFM LoRa 96 433mhz transiver module on the reciving side. On the transmitting side there is a arduino nano with the same wireles transiver.
So I wanted to purches what I need so I can use it at home. I scrolled through the store to adafruit and found a feather with the wireles module soldered on (Adafruit Feather 32u4 RFM96 LoRa Radio - 433MHz - RadioFruit). But I do not know if it has enough ram or storage, or what ever the feather uses to store the code. Beacuse of the graphic I have in the code, it got to bigg for the arduino nano I first used and got an error while uploading. So I moved on to the huzza 32 beacuse how powerfull it is.
So I need some feedback or help to see if I can use the radio fruit instead of having a 433mHz module and a huzza 32.
Radio fruit: https://www.adafruit.com/product/3079
Huzza 32 that I use: https://www.adafruit.com/product/3405
Reciver code in attached file.
Need help choosing feather
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- Balleklorin04
- Posts: 3
- Joined: Sun May 15, 2022 12:55 pm
Need help choosing feather
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- Franklin97355
- Posts: 23940
- Joined: Mon Apr 21, 2008 2:33 pm
Re: Need help choosing feather
There is this for a little more power. https://www.adafruit.com/product/3179
- Balleklorin04
- Posts: 3
- Joined: Sun May 15, 2022 12:55 pm
Re: Need help choosing feather
Will it be enough?
- michaelmeissner
- Posts: 1832
- Joined: Wed Aug 29, 2012 12:40 am
Re: Need help choosing feather
It may be tight. The 32u4 processors have about 2 kilobytes of RAM for read/write variables (and 32 kilobytes of flash memory to hold the code). A 128x64 OLED screen would need roughly 1 kilobyte of RAM to hold the screen contents in memory. Your Nano uses a 328P processor, but it has the same amount of memory.
So, you would want to go to a processor with more memory and/or possibly use a smaller screen. Looking at the Lora feathers, it looks like the only option is the M0 feather which includes the LORA chip or use a featherwing to add it:
But do you need Lora? it has a 2km range. Using wifi and/or bluetooth has shorter ranges. Your huzzah32 supports both wifi and bluetooth if memory serves. But wifi and bluetooth each has their own challenges in setup.
So, you would want to go to a processor with more memory and/or possibly use a smaller screen. Looking at the Lora feathers, it looks like the only option is the M0 feather which includes the LORA chip or use a featherwing to add it:
- M0 + feather: https://www.adafruit.com/product/3179
- Add-on featherwing (433Mhz): https://www.adafruit.com/product/3232
But do you need Lora? it has a 2km range. Using wifi and/or bluetooth has shorter ranges. Your huzzah32 supports both wifi and bluetooth if memory serves. But wifi and bluetooth each has their own challenges in setup.
- Balleklorin04
- Posts: 3
- Joined: Sun May 15, 2022 12:55 pm
Re: Need help choosing feather
Thank you for your good reply. I am worried that bluetooth range wil be to short. The garage is not so close to the front door where I want to mount the display. Some devices has excellent bluetooth range other wil not even reach through a simple wall. Ok, I think case closed. Feather wing is a good idea. Have looked at it myself.
Please be positive and constructive with your questions and comments.