 OfflineNewbie
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« on: March 20, 2013, 11:25:38 pm » |
i am trying to build a robot with 2 servo, 3 sensors, an lcd display and a micro sd breakout board for data logging. my problem is i am not sure how to connect both my display and sd card since the appear to use the same pins
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SE USA
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« Reply #1 on: March 21, 2013, 12:09:07 am » |
same pins? as in...
if they are SPI there should be a enable pin for each device, turn on the one you want to talk to and your good
if they are i2c then the whole thing happens as an address request
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« Reply #2 on: March 21, 2013, 12:22:23 am » |
both are spi
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« Reply #3 on: March 21, 2013, 12:35:50 am » |
micro sd has these pins - 5v, 3v, GND, CLK, DO, D1, CS, CD
128x32 SPI OLED has these pins- GND, 3.3v, VIN, DATA, CLK, D/C< RST, CS
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SE USA
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« Reply #4 on: March 21, 2013, 12:37:55 am » |
CS = chip select, they go to different outputs of the arduino to select which device your talking to
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« Reply #5 on: March 21, 2013, 12:40:39 am » |
so i would be able to tell the arduino which device is on what pin for chip select?
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« Reply #6 on: March 21, 2013, 12:48:46 am » |
and do i need a special shield for my i2c line sensor?
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