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michaelcheng1991 / Golf-Training-Aid-

Using sensors to create a golfer-friendly teaching device
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Let's go wireless #28

Open michaelcheng1991 opened 8 years ago

michaelcheng1991 commented 8 years ago

nRF24L01 2.4GHz Radio/Wireless Transceivers How-To http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo

data sheet http://yourduino.com/sunshop2/index.php?l=product_detail&p=188

michaelcheng1991 commented 8 years ago

Intel Curie ( small micro processor/ computer ) http://www.intel.com/content/www/us/en/wearables/wearable-soc.html

Batteries https://www.sparkfun.com/products/731

ATmega 2560 http://tw.taobao.com/item/16965933975.htm?spm=a1z3o.7695283.0.0.AplORy

ATmega 328 http://tw.taobao.com/item/39365231252.htm?spm=a1z3o.7695283.0.0.OH489Y

Camera http://tw.taobao.com/item/41246480734.htm?spm=a1z3o.7695283.0.0.6ko0bU

michaelcheng1991 commented 8 years ago

Batteries https://www.sparkfun.com/products/731

ATmega 2560 http://tw.taobao.com/item/16965933975.htm?spm=a1z3o.7695283.0.0.AplORy

ATmega 328 http://tw.taobao.com/item/39365231252.htm?spm=a1z3o.7695283.0.0.OH489Y

Camera http://tw.taobao.com/item/41246480734.htm?spm=a1z3o.7695283.0.0.6ko0bU

michaelcheng1991 commented 8 years ago

RF24 project node-relay-base, what? http://forum.arduino.cc/index.php?topic=187692.0

michaelcheng1991 commented 8 years ago

THIS IS THE LIBRARY YOU ARE YOU USING!!! https://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo

michaelcheng1991 commented 8 years ago

Syncing and stuff

  1. go back to this tutorial on SPI (logic analyzer, specialized driver chip) https://learn.sparkfun.com/tutorials/serial-peripheral-interface-spi
  2. synchronicity (this is for long distance i think ) http://www.ti.com/lit/an/slyt441/slyt441.pdf
michaelcheng1991 commented 8 years ago

This application note describes how to implement a real time counter (RTC) on Atmel® AVR® microcontrollers that features the RTC module. The implementation requires only one discrete component – a 32.768kHz watch crystal

http://www.atmel.com/images/atmel-1259-real-time-clock-rtc-using-the-asynchronous-timer_ap-note_avr134.pdf

why use 32.768 kHz crystal ? http://electronics.stackexchange.com/questions/177844/why-do-we-use-32-768-khz-crystals-in-most-circuits

is there any difference between frequency crystal and real time crystal ?

michaelcheng1991 commented 8 years ago

this is a good tutorial for nrf24l01 from sparkfun (should be similar to +) http://playground.arduino.cc/InterfacingWithHardware/Nrf2401