Teensy 4 - 600Mhz Arduino-compatible

[raygdunn]

Anyone else think this sounds useful?

100ma fully loaded.
2 x 12bit ADCs
A very compact board.
Not available in the UK yet it would seem. A tad more here than the $20 I expect.

https://blog.hackster.io/teensy-4-0-brings-600-mhz-cortex-m7-to-the-arduino-world-13d451477918


(I'm a bit inactive in the detector area at the moment, but still keeping an eye on the forum.)

[waltr]

Nice little but Very powerful processor on a nice compact board.

could be very handy.

[Cazavor]

Almost bought it for my detector project, but decided to order an ESP32 and STM32F407 to experiment with instead due to the much cheaper prices.

What's the sample rate for the ADC? Looks like this information is not available unless you dig into datasheets. So that's what I did - on the Teensy homepage the 4.0 version of the board was shown with a MIMXRT1062DVL6A chip, for which there's a datasheet and in there its written that the lowest ADC conversion time is 0.7 microseconds, which would be about 1.4 MSPS. If it's true, then it seems to me that this board wouldn't be worth buying for its built-in ADC capabilities. For reference, the ESP32 is rated at 2 MSPS on one ADC and the STM32F407 can do 7.2 MSPS with triple ADC interleaving. Haven't analyzed anything about precision or noise of course, please correct me if I got anything wrong.

That said, the clock speed is unbeatable though, which is tempting.

[raygdunn]

Almost bought it for my detector project, but decided to order an ESP32 and STM32F407 to experiment with instead due to the much cheaper prices.

What's the sample rate for the ADC? Looks like this information is not available unless you dig into datasheets. So that's what I did - on the Teensy homepage the 4.0 version of the board was shown with a MIMXRT1062DVL6A chip, for which there's a datasheet and in there its written that the lowest ADC conversion time is 0.7 microseconds, which would be about 1.4 MSPS. If it's true, then it seems to me that this board wouldn't be worth buying for its built-in ADC capabilities. For reference, the ESP32 is rated at 2 MSPS on one ADC and the STM32F407 can do 7.2 MSPS with triple ADC interleaving. Haven't analyzed anything about precision or noise of course, please correct me if I got anything wrong.

That said, the clock speed is unbeatable though, which is tempting.

No I went purely on the processing speed. Yes quality of conversion is everything and sales people will do anything for headline grabbing figures confusing the issue.