This post
https://forum.pjrc.com/threads/28039-Teensy-3-1-time-accuracy
suggests that for the Teensy 3.1, the crystals are usually accurate to within 20 ppm. Are the crystals on the Teensy 3.6 similarly accurate? What sort of worst-case accuracy should I assume for Teensy 3.6 crystals?
(My project is building a controller for an old Yamaha Disklavier. I'm using four Teensy 3.6's to feed pwm to 88 solenoids. Timing uses micros() plus a correction-offset. I need to decide how frequently to adjust the correction-offset in order to have the four Teensys always agree to within nn microseconds. This is just background. All I really want to know is what sort of accuracy I can safely assume for the Teensy 3.6 crystals.)
https://forum.pjrc.com/threads/28039-Teensy-3-1-time-accuracy
suggests that for the Teensy 3.1, the crystals are usually accurate to within 20 ppm. Are the crystals on the Teensy 3.6 similarly accurate? What sort of worst-case accuracy should I assume for Teensy 3.6 crystals?
(My project is building a controller for an old Yamaha Disklavier. I'm using four Teensy 3.6's to feed pwm to 88 solenoids. Timing uses micros() plus a correction-offset. I need to decide how frequently to adjust the correction-offset in order to have the four Teensys always agree to within nn microseconds. This is just background. All I really want to know is what sort of accuracy I can safely assume for the Teensy 3.6 crystals.)
