TouchShield v2 + additional SD card

Projects General Guidance
1

I have a project that involves obtaining user input to set some variables, running a test (basically oscillating a motor back and for forth a period of time and number of cycles just obtained from the user), collecting data from a sensor, and somehow reporting the data to the user for further analysis. I am planning on using an arduinouno, the seeedtouch shield v2, a SyREN 50 motor controller, a digital encoder for measuring rotation of a shaft, two temp sensors, and a breakout board for an SD card. I have most of the how to worked out in my head but before spending funds I would like advice on the following.

  1. Can I use the breakout board for a second SD card and the TouchShield vs in the same build. I would like to use the SD card on the touchshield only for graphics storage for the human interface, and put the datafiles on the second SD card. ( I am also hopping this will also allow me to wire the Breakout board to a separate panel mount SD slot for the user to access. ) I will want to show instantaneous data on the screen and record the date to the SD every 1 second or so. If I can not use both SD cards I would still prefer to use one on a breakout board for both tasks.

  2. I am wondering if the interrupts I will use for the digital encoder will interfere with writing to the SD card or updating the display.

My intention is to wire the data pins on the arduinouno as follows. any suggestions here would be helpful as well.

D0 - NOT USED
D1 - NOT USED
D2 - Interrupt 1 from digital encoder
D3 - Interrupt 2 from digital encoder
D4 - TF_CS, SD card select - PER Touchshield pinout
D5 - TFT_CS, TFT chipselect - PER Touchshield pinout
D6 - TFT_D/C, TFT Data/Command - PER Touchshield pinout
D7 - BACKLIGHT, TFT - PER Touchshield pinout
D8 - NOT USED
D9 - serial to SyRen for motor control (could move to D1)
D10 - SPI chip select - PER Touchshield info but I am not sure it really uses it???? So I plan on using it for the second SD card select
D11 - SPI data pin - PER Touchshield pinout + breakoutSD
D12 - SPI data pin - PER Touchshield pinout + breakoutSD
D13 - SPI serial clock pin - PER Touchshield pinout + breakoutSD

A0 - Touch Y- PER Touchshield pinout
A1 - Touch X- PER Touchshield pinout
A2 - Touch Y+ PER Touchshield pinout
A3 - Touch X+ PER Touchshield pinout
A4 - Analog sensor - temp
A5 - Analog sensor 2 - other temp.

Thanks for any advice or suggestions.