The Raspberry Pi Pico 2: A RISC-V Bet! 3 PIOs, Arm + RISC-V, better efficiency... here's my first look: https://www.youtube.com/watch?v=oXF_lVwA8A4
@geerlingguy - Do you happen to know if these can live outdoors in the sun in a hermetically sealed enclosure, or will heat (and eventually cold) be an issue?
@Sknashville There are temperature ratings but didn't see them on datasheet at a casual glance. Usually 80°C or so but might be higher now? Not sure.
@geerlingguy @Sknashville Looks like Raspberry Pi squirreled them away on page 11 in this datasheet: https://datasheets.raspberrypi.com/pico/pico-2-datasheet.pdf
3.3. Recommended operating conditions
Operating conditions for the Raspberry Pi Pico 2 are largely a function of the operating conditions specified by its
components.
Operating Temp Max 85°C (including self-heating)
Operating Temp Min -20°C
@geerlingguy @Sknashville It seems like the clock crystal might be the limiting factor, at least when it comes to the one that they recommend in the RP2350 datasheet (page 544):
https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf
@qlp Nice sleuthing!
@geerlingguy I think I ran across something labeled HT_TH that has flags for a set of temperature thresholds that went up to 150C. I closed out of the datasheet and forgot to note more of it.
I guess if you are willing to build a custom PCB with components that can handle wider temperature ranges than the standard Pico 2 board, you might be able to eke out 100-120C as a safe maximum.
@geerlingguy Why no USB-C?
@JustChomik Probably to keep compatibility with original Pico. Hopefully next one will be USB-C (and already many 3rd party boards are using C).
@geerlingguy Makes sense, thanks for the response
@geerlingguy I was also reading your blog post, I'm most interested in this quote:
"Extended low-power sleep states with optional SRAM retention: as low as 10 μA DVDD"
I can't find these words from the datasheet: https://datasheets.raspberrypi.com/rp2350/rp2350-datasheet.pdf - It seems to only have the following table, where the P1.7 means everything is off (XIP, SRAM0 &1) but not 10uA reference. Also I don't know how to interpret this table anyhow.
I also wouldn't want to get DS3231 just to sleep the Pico 2 like with 1.
@Ciantic the power states are still something I'm testing, so don't put much stock in the 10 uA value... I also asked the Pi engineers about it and that's a floor, so real world maybe 50 uA is possible? Not sure yet.
@geerlingguy I hope you figure it out sometime!
I would even prefer them even making a pricier board with something like DS3231 or other deepsleep RTC integrated just for waking up if they can't get it under 10 dollars.
@geerlingguy at this rate, I will have a SparkFun RP2350 long before the Pico 2...review that one??