RTC with Circuit Playground Bluefruit and TFT Gizmo

CircuitPython on hardware including Adafruit's boards, and CircuitPython libraries using Blinka on host computers.

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glennpiper
 
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RTC with Circuit Playground Bluefruit and TFT Gizmo

Post by glennpiper »

Hello! I was hoping to use a Circuit Playground Bluetooth and a TFT Gizmo to make a display/gauge that would, among other things, display the current date and time.
However, I overlooked that the board does not have a RTC... oops. I have found the DS3231 RTC, and am wondering if I can still make use of this and it's I2C interface if I am already running the TFT Gizmo which uses the bluefruit's I/O for SPI communication. Any thoughts/suggestions?
Thanks!
Glenn

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dastels
 
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Re: RTC with Circuit Playground Bluefruit and TFT Gizmo

Post by dastels »

I'm afraid the SPI takes up most of the pins. You have A1 & A2 left unused, but I'm not sure they can be used for I2C. The situation with the tri-color e-ink gizmo is the same.

If you want non-trivial connectivity, the CircuitPlayground boards aren't the best choice. But they have so much onboard that you usually don't have the need to connect much... unless you need a display and an RTC.

Dave

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