Teensy 4.1 Industrial environment
- Thread starter elikl
- Start date
The processor is not the industrial rated temperature spec version of the part so it depends what exactly you mean by industrial environment.
People have made their own Teensy compatible boards using industrial grade versions of the part and reported that it worked.
If this is for something that is intended to run 24/7 then unless it's kept in a fridge you may want to drop the processor speed down. The processor lifespan at normal temperatures is significantly shorter at 600 MHz than at 528 MHz. Not short enough to matter for most applications but short enough that it becomes an issue for something that will be running constantly.
People have made their own Teensy compatible boards using industrial grade versions of the part and reported that it worked.
If this is for something that is intended to run 24/7 then unless it's kept in a fridge you may want to drop the processor speed down. The processor lifespan at normal temperatures is significantly shorter at 600 MHz than at 528 MHz. Not short enough to matter for most applications but short enough that it becomes an issue for something that will be running constantly.
Thank you for fast response. Used only up to 8 hours a day, operate by humans, underwater up to 60 ft sealed in stainless steel sealed house which also is the heat sink. So, what might the problem using your PCB. Did your PCB tested in the temperature rating of the MCU?
Thank you.
Elik
Thank you.
Elik
I don't have a PCB. I looked at the datasheet and application notes of the processor on the teensy 4.1. I didn't check the other components.
Other people have used their own designs with the industrial part.
What if any temperature testing has been done on the Teensy 4.1 board I have no idea.
Other people have used their own designs with the industrial part.
What if any temperature testing has been done on the Teensy 4.1 board I have no idea.
PaulStoffregen
Well-known member
If you're controlling motors or solenoids or other inductive loads, high speed clamping diodes are critically important to prevent high voltage spikes when the current suddenly switches off. While this is true with all microcontrollers, the pins on these modern 600 MHz chips are less able to withstand abuse than the pins on old 16 MHz 5 volt parts like AVR and PIC.
Likewise for the power input, over the max 5.5V for even brief spikes can damage the hardware. If "industrial" might mean noisy or poor quality power input, you may need to design extra protection to your PCB.
Regarding temperature, Teensy dissipates about 0.5 watt. You should use the internal temperature sensor to monitor the chip's temperature in your application, even if only for the initial testing to verify your design isn't thermally isolating the chip. Even if used only at room temperature, you can run into trouble with certain approaches like a tight layer of heat shrink tube which acts as a thermal insulator keeping that heat from escaping and causing the chip to cook itself (yes, that has come up...)
Likewise for the power input, over the max 5.5V for even brief spikes can damage the hardware. If "industrial" might mean noisy or poor quality power input, you may need to design extra protection to your PCB.
Regarding temperature, Teensy dissipates about 0.5 watt. You should use the internal temperature sensor to monitor the chip's temperature in your application, even if only for the initial testing to verify your design isn't thermally isolating the chip. Even if used only at room temperature, you can run into trouble with certain approaches like a tight layer of heat shrink tube which acts as a thermal insulator keeping that heat from escaping and causing the chip to cook itself (yes, that has come up...)