Hello!
I'm interested in both the 1.8" TFT Shield with joystick and the Data logging shield. For my application I am looking to add a simple user interface (just some basic feedback about what's going on and the ability to have very limited on/off type interactions) and also log data while the system is running to an SD card. Having a real-time clock for the data on the SD card is nice, but not required.
My questions are:
1. Can I use just the TFT shield to accomplish these objectives?
2. Is there a more efficient combination of shields? I was looking at the LCD shields (I don't need to display graphics), but they appear to be out of stock.
3. My project has fairly critical timing constraints (<5ms) managed using the multi-tasking method described on Adafruit. Does the TFT need to be refreshed or can I simply set it once and leave it be until there is time to reset it? I'm thinking while the critical timing elements are running it would only update once a second with a timer.
Thanks for the help!
1.8 TFT Shield and/or Data logging Shield?
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Please be positive and constructive with your questions and comments.
- icecool2
- Posts: 14
- Joined: Fri Oct 26, 2018 8:26 am
Re: 1.8 TFT Shield and/or Data logging Shield?
Bump for some help :)
- icecool2
- Posts: 14
- Joined: Fri Oct 26, 2018 8:26 am
Re: 1.8 TFT Shield and/or Data logging Shield?
Not that anyone from Adafruit bothered to answer my question, but I'll provide what answers I have so others can hopefully learn from this post.
1. Can I use just the TFT shield to both have a display and log data? Yes.
2. Is there a more efficient set of shields? No. The one caveat is that you do not get a real time clock with this approach. You could add it using a breakout board though.
3. Do you need to refresh the display? No. The display will continue to hold whatever has been sent to it until you change it. It is a fairly slow process though, so don't expect to be able to run time critical code and this display on the same arduino.
1. Can I use just the TFT shield to both have a display and log data? Yes.
2. Is there a more efficient set of shields? No. The one caveat is that you do not get a real time clock with this approach. You could add it using a breakout board though.
3. Do you need to refresh the display? No. The display will continue to hold whatever has been sent to it until you change it. It is a fairly slow process though, so don't expect to be able to run time critical code and this display on the same arduino.
- adafruit_support_carter
- Posts: 29473
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 1.8 TFT Shield and/or Data logging Shield?
Thanks for posting all the additional info. It's a little difficult to answer your original questions as simple yes/no. And some of the answers would require additional information about trade offs you may need to make specific to your project. But sounds like you are working through these. And posting what's working for you back here can serve to help someone else working with a similar set of requirements.
- icecool2
- Posts: 14
- Joined: Fri Oct 26, 2018 8:26 am
Re: 1.8 TFT Shield and/or Data logging Shield?
Isn't that sort of the point of having a support forum?
- adafruit_support_carter
- Posts: 29473
- Joined: Tue Nov 29, 2016 2:45 pm
Re: 1.8 TFT Shield and/or Data logging Shield?
For technical support, yes. For engineering support, not really, or very limited. For example, your question 2 would require further details on what you mean by "efficient".
But other people are free to find this and chime in with suggestions and help. The forums are also here for community support and help.
But other people are free to find this and chime in with suggestions and help. The forums are also here for community support and help.
Please be positive and constructive with your questions and comments.