grease_lighting
Senior Member

I mostly use the displays from buyDisplay.com. tftm043 4.3" diag with ft5206 cap touch controller tftm050 5.0" diag with GSL1680 cap touch controller tftm070 7.0" diag with ft5206 touch controller All are RA8875...

That looks great. What did you use on the PC side to work the image data? Thanks.

Although I have zero mileage / experience using the T4.x I would suggest adding an electrolytic capacitor to the regulated side of the Teensy power grid to reduce the effects of the power transient to see if it lessens...

Code to do writes to EEPROM //EEPROM_I2C_Write Use to create EEPROM contents // writes are always in groups of 5-bytes * 25 repeats // last 3-bytes on page are left un-programmed // p6 is page pointer // P5...

There are several libraries for I2C EEPROM on Github. I looked at them for reference purposes when employing a 24C512 to hold firmware for the GSL1680 touch controller. Not too difficult to do. Remember to allow...

You don't give us much to work with. Is the Teensy being mounted on another PCB where you could use tiny spring contact pins? Could you pick the +5v from the Vin pin on the corner of the Teensy and use a USB-C to...

I'm doing something like this with a Teensy 3.2. In your drawing you have the PowerBoost 5v output going to the T4.1, so it (may) only gets recognised as USB device when it is powered on. Maybe the T41 is barely...

I reinstalled/updated both the IDE (1.8.13) and Teensyduino (1.53) and as suspected, the problem resolved itself. Perhaps (???) it was related to the issue discovered here: ...

The display is wired as a 5v unit. The circuitry is on two (2) different PCBs with traces no longer than 4-inches. Screen resolution set for 480x800. Since the T32 and T35 have a common sub set of pins,...