ok, as stated before.. my son and i are new to arduino... i bought an arduino for my son for x-mas (so he hasn't opened it yet, nor the books he's getting)..some facts before questions..A.)
i will be using a multi coin acceptor: https://www.adafruit.com/products/787B.)
it will be used for a more enhanced project of: http://www.youtube.com/watch?v=0BjU2Hy5Yrw
that project does not use a backup battery power supply, but i will add that..
that project does not save dollar amt to the eeprom.. but i will add that too..
that project uses a single coin acceptor (based on quarters only).. i will be using the one i stated above..
so, for conversation sake, we will be talking about the one they are using in the video (the single coin, based on quarters).. and base our savings amount at $1,000,000.00
the eeprom can handle 100,000 write/delete runs.. so, if you 400,000 quarters - that's 400,000 writes.. and only $25,000 with 4 chips - but our goal is $1,000,000.00 - so in this case we would need 130 atmega chips.Questions:
1.) how to you save data to the eeprom (like say a dollar amt) every time a quarter is inserted?
2.) how do you save to multiple chips.. so when the first chips reaches 100,000 writes - it moves onto the next chip?
3.) is there a better way for saving than having 130 chips?