I have worked with IMU and an Arduino before to build a motion/activity tracker. Even after making it wireless, the whole system is quite big due to the individual breakout boards that hold those chips and sensors.
My goal is to make this thing smaller and after some research, I thought I could use AVR Atmega chip as the main brain and connect all sensors to it.That was the plan until I read about those commercially available fitness trackers that use ARM chips. Now I am a bit confused and would appreciate your feedbacks regarding this matter.
My questions are:
- What are the advantages and disadvantages of building this with AVR Atmega vs. ARM?
- How about circuit design? If I were to buy individual chips and make my own PCB board, do you think this is doable by someone like me? (Not an expert)
- What are the things that I need to make this work? For example, for the atmega, i think I need the avr-isp programmer. How about ARM? What about the softwares? Any other items?
Thank you for your feedback.
Update: I have edited my questions.