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As a follow up, the touchscreen display itself was the cause of the problem I described above. I had hoped for a simpler solution as the display had tested correctly in a breadboard and had now been soldered into a custom PCB. The continuous touches registered by the touchscreen have now gone...

Thanks MatrixRat for the suggestions. I have not seen any correlation with how long power has been off. The spurious touch readings occur whether the power is quickly reset or off for an extended period of time. I will look further at the MC7805 risetime. I have also thought the top left...

I am using the 2.8" ILI9341 TFT with touchscreen with a Teensy 3.2, both purchased directly from pjrc.com. The TFT works as expected, however the touchscreen will sometimes get stuck in a "self triggering mode" as if there are continual touches near coordinates x = 180 to 225, y = 230 to 255...

I am using a Teensy 3.2 with a 320x240 2.8" TFT touchscreen (ILI9341 and XPT2046 drivers), both purchased on pjrc.com. The "touch" is intermittent: sometimes the "touch" works as intended, other times it responds as if it is receiving continuous touches -- indicated by a flashing TFT display...

Thanks for the suggestions, jonr and defragster. I do plan to do a lot of experimentation, but given I am building a PCB I wanted to get as close as possible in the first iteration and get other's expertise as to what issues to consider and examine. I would prefer not adding an external ADC as...

Is there a better place I should have posted this? Three days and no replies.

I am designing a Teensy 3.2 board to measure up to 6 cells of a LiPo battery under DC load. I would like to measure the voltages of the 6 cells within 1 ms or less, as the battery will be under load and I want to capture the cell voltages at the "same" time during the discharge curve...

Thanks for the rapid response. I am trying to create a seven segment font for a Teensy 3.2 and ILI9341 display application I am building. I found and used the tool, but had not planned to use the lvgl library. I created a sevensegment.h file to what I thought would work. (Still learning...

Is this font editor no longer available? I watched the UT video and followed the link, several times, but do not see the font conversion tool. Thanks!