@oliof said in Where's the Duet Wifi 3?:
if you don't waste the RAM chips, you can still get an RPi4 for 35$.
Thanks for that. Looks like a 2GB Pi4 is $35ish - I'd get the 8GB one because more is "more better" as they say 
@Veti said in Where's the Duet Wifi 3?:
you are complaining that the duet 3 with features that not everyone needs is to expensive, yet for you the mini 5 wifi does not have enought features for you.
take your pick really.
My pick would be a Wifi 3...which would be the natural progression from the Wifi 2. To use the analogy again: If you bought an XYZ brand laptop in 2020 for $400 - and then wanted to get another one in 2021 that was supposed to be 'updated' - EXCEPT it doesn't come with wifi anymore - you have to buy a 3rd party add on to get it - oh and it's total cost is now $800 - would you buy it? Chances are the answer would be no.
@deckingman said in Where's the Duet Wifi 3?:
@BDubs I'll just add that the faster processor on gen 3 is actually just a number. It doesn't gain you anything. Until very recently, the maximum step pulse frequency was actually a LOT slower using RRF 3 firmware which is what you have to use with Gen 3, than it is on the older gen 2. I'm still waiting for a stable version of RRF3 to verify if the step pulse frequency is now as good as the older gen 2 product.
I assume that you've also checked out the list of firmware limitations which apply to gen 3 products but which do not apply to gen 2?
Unless you need the higher current driver's or want to run more than 12 steppers, then gen 2 remains the better choice by far (and it gives you the WiFi option without the need to add another layer of complexity and cost in the form of an SBC).
That's just my opinion of course, but I've had every version of Duet products from the earliest 06 boards to the "latest and greatest".
Thanks for that - processor, or rather pulse rate, was the original yard stick when choosing the Duet. Not the same logic as most who are in dreamworld about speed...more like being able to run say 10:1 mechanical reduction and set the driver to full stepping to mitigate the hysteresis associated with microstepping (and torque loss on top of it) - but that's crazy talk because few can ever fathom what I just wrote and the reason behind it.
I'd be interested to know if RRF3 is on par with RRF2 in terms of max pulse rate, too. I'm config'd with RRF3 right now...but may go back to RRF2 after reading what you wrote.
@hackinistrator said in Where's the Duet Wifi 3?:
imho again , the main advantage of the 3rd gen board is not the drivers or the cpu . its the CAN bus .
i hope in the future there will be a possibility to connect the duet3 to industrial servo drivers , maybe device net servos also .
Yes...CANBus connectivity is nice. We'll finally be able to use those servos we hoarded off of Ebay that we swore took S&D years ago (or was that just me?)