We had a 4.1 sputter out in some thermal testing. During validation, I collected the following data:
Teensy 3.6
Ambient Temperature ~80C
Soak Time ~2hrs
Airflow minimal to none
Mounting - standard header set, about 1cm off the PCB (floating in free air)
Pass, no indication of abnormal behavior
Shown above is a report-back
* Degrees F
* Degrees F trunk (for CAN)
* Degrees C, calculated from Degrees F
+/- a few degrees
4 measurements on the chamber including
* Fluke 87V
* Thermal Controller
* Teensy 3.6
* another random meter
I will post an update when we reach the limit, but as far as I am concerned the Teensy 3.6 is ready for any reasonable environment.
...
When I run the 4.1 thru a similar test
* Around 52C it performs
* Above that things get dicey
It fails the above test, and I dont have time to neck down on it, but... generally speaking... the Teensy 4.1 (as shipped) wont perform as well thermally as the Teensy 3.6. Not a huge surprise, as ... lol ... it is like 600Mhz in an Arduino form factor
But
Data for what it is. If anyone wants to piggy-back a test (running a specific loop or test) let me know and I will help where I can.
...
Overall
Teensy is great, we are very happy with it, I really appreciate the efforts.
To end on a positive note::
With the Teensy 4.1 I can output a 20Mhz square wave by reading my input, toggling it, and writing it back out. That is... unbelievable. Teensy 4.1 for Arb of the year.
-Schindler
Teensy 3.6
Ambient Temperature ~80C
Soak Time ~2hrs
Airflow minimal to none
Mounting - standard header set, about 1cm off the PCB (floating in free air)
Pass, no indication of abnormal behavior
Shown above is a report-back
* Degrees F
* Degrees F trunk (for CAN)
* Degrees C, calculated from Degrees F
+/- a few degrees
4 measurements on the chamber including
* Fluke 87V
* Thermal Controller
* Teensy 3.6
* another random meter
I will post an update when we reach the limit, but as far as I am concerned the Teensy 3.6 is ready for any reasonable environment.
...
When I run the 4.1 thru a similar test
* Around 52C it performs
* Above that things get dicey
It fails the above test, and I dont have time to neck down on it, but... generally speaking... the Teensy 4.1 (as shipped) wont perform as well thermally as the Teensy 3.6. Not a huge surprise, as ... lol ... it is like 600Mhz in an Arduino form factor
But
Data for what it is. If anyone wants to piggy-back a test (running a specific loop or test) let me know and I will help where I can.
...
Overall
Teensy is great, we are very happy with it, I really appreciate the efforts.
To end on a positive note::
With the Teensy 4.1 I can output a 20Mhz square wave by reading my input, toggling it, and writing it back out. That is... unbelievable. Teensy 4.1 for Arb of the year.
-Schindler