Uno R3 + Data Logging Shield + 2.8" TFT Touch Shield

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seansc
 
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Uno R3 + Data Logging Shield + 2.8" TFT Touch Shield

Post by seansc »

I plan to add these Adafruit shields on Uno R3:

Data Logging Shield
2.8" TFT Touch Shield v2 resistive or capacitive

What is the default CS pin used by each shield? If I need to change the CS pin, how should it be done (software and/or hardware)?

Is there any hardware resource conflict between these shields?

Thanks.

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adafruit_support_bill
 
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Re: Uno R3 + Data Logging Shield + 2.8" TFT Touch Shield

Post by adafruit_support_bill »

Pinouts are covered in the tutorials:
https://learn.adafruit.com/adafruit-2-8 ... connecting
https://learn.adafruit.com/adafruit-dat ... d-overview

There is a conflict with pin 10. This is used as CS for the SD card on the logger, as well as CS for the display. Since there is another SD card slot on the display shield (CS = pin 4), you can simply not use the SD card on the logger and avoid the conflict.

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seansc
 
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Re: Uno R3 + Data Logging Shield + 2.8" TFT Touch Shield

Post by seansc »

So based on my understanding (please correct if I'm wrong):
TFT Touch Shield uses CS pin 10 (for TFT), CS pin 4 (for SD card)
Data Logger Shield uses CS pin 10 (for SD card)

Due to conflict on pin 10, can I reassign the CS pin on the data logger shield to another pin other than 10 and 4?

If not, can the SD card slot on TFT shield be used for data storage?

What I need is a data monitoring and logging solution with data recorded on SD card with real-time date and time stamp, and touch screen display for viewing data and changing settings. Please suggest a feasible hardware solution to use.

Thanks.

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adafruit_support_bill
 
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Re: Uno R3 + Data Logging Shield + 2.8" TFT Touch Shield

Post by adafruit_support_bill »

You can re-map the CS pin for the logger shield SD, but you will only be able to use one SD card at a time.
The simplest thing to do is just use the card slot on the TFT shield. They both look the same to the SD library.

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