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Topic: Small microcontroller (Read 183 times) previous topic - next topic

Mitchell-Burns

Hey, so i am working on a microcontroller project and i need a good small microcontroller(about the size of a quarter). The microcontroller needs to be able to send and receive data and also use a small amount of energy as we plan on being able to run it off of a 350mah li-po. Thanks in advance.

Smajdalf

Add more info what you want. Do you need DIP package or can you handle SMD? Are 6 I/O pins of an ATTiny enough or do you need more? How much memory do you need?
On 8-bit (i.e. Uno) use "byte" instead of "int" if possible - it is faster and saves resources!

DrAzzy

That's entirely possible, Hell, you can probably cram a whole '328p onto a quarter sized board. I think they make a QFN or VQFN version of the '328p.
ATtiny core for 841+1634+828 and x313/x4/x5/x61/x7/x8 series Board Manager:
http://drazzy.com/package_drazzy.com_index.json
ATtiny breakouts (some assembled), mosfets and awesome prototyping board in my store http://tindie.com/stores/DrAzzy

Mitchell-Burns

Okay so i am very new to microcontrollers. i only just messed around with the arduino uno. I am using this to make a step tracking insole with a battery and a pressure sensor. The idea is every step you take will be logged and then i can take it out of the shoe hook it up to the computer and retrieve the data. if the project works well and i am able to figure it all out rather quickly i would like to be able to send data to an app or a website to view. The microcontroller i have seen on adafruit ( https://www.adafruit.com/product/1501 ) have all said in the description "Trinket does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data" so does this mean it will not be able to retrieve data from the pressure sensor. Thank you.

DrAzzy

An application like that would probably demand a custom pcb. I'd use attiny841 in the qfn package - that's the physically smallest avr with a hardware uart.
ATtiny core for 841+1634+828 and x313/x4/x5/x61/x7/x8 series Board Manager:
http://drazzy.com/package_drazzy.com_index.json
ATtiny breakouts (some assembled), mosfets and awesome prototyping board in my store http://tindie.com/stores/DrAzzy

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