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Hello back from my travels and managed to get through the first week of work, and looking forward to picking this project up again.
The Photointerrupters i want are now back in stock and are...

I have been laughing at the solution to this, i spent a reasonable amount of time altering and changing the delay40; and looking for any changes.............
I just never thought to comment it out...

In response to 'manitou' this is what i got when i run the debug, however i don't have the knowledge of the 4.1 to understand what might create the issue.

Defining BMP3XX_DEBUG prints out this in...

Yes i have and thank you for the reply Paul, i get the return = 0x77

I managed to find an old Arduino uno.

Fired up first time with the test sketch with I2C, so the I2C bus is functional on my sensor.

So upto now we have tested:

Teensy 4.1 +SPI with BMP390 =...

I have seen the same issue with 4.1 and the BMP390 over I2C.
SPI works fine. but I also need to use I2C for my project.

I used a MCP9808 i2C temperature sensor with teensy 4.1 without issue....

Yes is the short answer, but perhaps not at this early stage? (if you can see issues then i would be very happy to hear them, other than the accuracy of the teensy clock as i understand i can only go...

That really is very impressive considering 'nothing too special about the crystal'
While i should be packing for going away i had to make time today to try out the new Teensy 4.1
Ive attempted to...

My lack of experience is with this type of code below, as it looks to be very different to what i am used to (standard Arduino) :
IOMUXC_SW_MUX_CTL_PAD_GPIO_AD_B1_03 = 8; // GPT2 Capture1...

Thank you for taking the time to look at this, this is extremely useful and i hope to take a look at this when i progress from using the teensy counter and i build upto the 10mhz OCXO external.
i...

thank you for this concept and idea, i will firstly try and use the teensy clock only then i hope to build upto using a more stable OCXO 10Mhz reference.
great feedback and given me a good...

Thank you for this reply, its probably the most practical solution to get my project started. As i advance i can consider an external 10Mhz OCXO and how to deal with that as in the past several days...

Hello,
I have a very particular type of Master clock (electro-mechanical pendulum, made by the company Gent and referred to as a pulsynetic) i am interested at looking at its time keeping ability,...

Hello and thank you for the reply.

Its my opinion that it will be many years until someone with the time and the skills will be able to claim the Full CANopen stack crown for a free library!
But...

Hello, I have a very low power servo motor drive that can be commanded by CANopen and RS485 and i do realize that CANopen is a protocol layer / standard, but i am wondering if anyone has any...