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New Raspberry Pi Zero 2W

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  • undefined
    PCR
    last edited by 28 Oct 2021, 06:32

    https://www.raspberrypi.com/products/raspberry-pi-zero-2-w/

    now it should be possible to run DSF with the Pi Zero 😉

    undefined undefined undefined 3 Replies Last reply 28 Oct 2021, 07:31 Reply Quote 3
    • undefined
      o_lampe @PCR
      last edited by o_lampe 28 Oct 2021, 07:31

      @pcr I liked the idea of a tiny SBC in the past, but they always ended up in a pile of cables and extra-adapters (active USB hub etc)
      What would be the recommended shopping list for this board running a HDMI screen and keyboard/mouse?

      //edit How about running a slicer on it?

      1 Reply Last reply Reply Quote 0
      • undefined
        jay_s_uk @PCR
        last edited by 28 Oct 2021, 07:50

        @pcr I wonder if 512mb is enough ram???

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

        undefined 2 Replies Last reply 28 Oct 2021, 08:10 Reply Quote 0
        • undefined
          o_lampe @jay_s_uk
          last edited by o_lampe 28 Oct 2021, 08:10

          @jay_s_uk said in New Raspberry Pi Zero 2W:

          @pcr I wonder if 512mb is enough ram???

          [OT] On my Odroid headless MCU cluster I defined 1GB RAM of each MCU as Ram-disk and the Head-MCU could access them as Swap-drive. This way I had +8GB swap drive with network read/write speed (1GBit LAN).

          Maybe we can install a swap-drive here with USB-speed (SSD?)
          //edit there's an official RPi eMMC_to_SD-card with 32GB, might be a good compromise?

          1 Reply Last reply Reply Quote 0
          • undefined
            T3P3Tony administrators @PCR
            last edited by 28 Oct 2021, 09:40

            👀 RP3A0, a custom-built system-in-package designed by Raspberry Pi in the UK 👀
            I wonder what interesting yet to be discovered kernel/driver "features" lie in wait here 😆

            definitely worth giving it a go though!

            www.duet3d.com

            undefined 1 Reply Last reply 29 Oct 2021, 16:30 Reply Quote 0
            • undefined
              o_lampe @jay_s_uk
              last edited by 28 Oct 2021, 12:14

              How much free RAM does a RPi 3 or 4 show after DSF has booted?

              undefined 1 Reply Last reply 28 Oct 2021, 12:43 Reply Quote 0
              • undefined
                chrishamm administrators @o_lampe
                last edited by 28 Oct 2021, 12:43

                @o_lampe On DuetPi:

                pi@duet3:~ $ free -h
                total used free shared buff/cache available
                Mem: 3.7Gi 342Mi 2.9Gi 58Mi 511Mi 3.2Gi
                Swap: 99Mi 0B 99Mi

                On DuetPi-lite (no GUI):

                pi@Ender3Pro ~> free -h
                total used free shared buff/cache available
                Mem: 1.8Gi 128Mi 1.5Gi 8.0Mi 175Mi 1.6Gi
                Swap: 99Mi 0B 99Mi

                Both are running on two different RPi 4s. I suspect some more RAM could be saved by turning off some more system services (like bluetooth and pulseaudio).

                Duet software engineer

                undefined 1 Reply Last reply 28 Oct 2021, 12:50 Reply Quote 1
                • undefined
                  o_lampe @chrishamm
                  last edited by 28 Oct 2021, 12:50

                  @chrishamm Even in GUI mode it only takes ~350MB, that should work with the Zero 2W. But slicing is a different story.

                  1 Reply Last reply Reply Quote 0
                  • undefined
                    o_lampe
                    last edited by 29 Oct 2021, 07:51

                    Don't want to highjack the thread, but while shopping in the raspberry shop, I saw the RP2040 aka. Raspberry Pi Pico.
                    It has a very low price and comes with a Cortex M0 MCU. I wonder if it would work as Arduino nano replacement, or even better as a mini toolboard MCU?

                    undefined undefined 2 Replies Last reply 29 Oct 2021, 09:18 Reply Quote 0
                    • undefined
                      rjenkinsgb @o_lampe
                      last edited by 29 Oct 2021, 09:18

                      @o_lampe said in New Raspberry Pi Zero 2W:

                      It has a very low price and comes with a Cortex M0 MCU.

                      On that off-topic subject 🙂
                      I've been playing with some Seeed Xiao boards - again an M0 CPU with 256K flash, 32K RAM. About £5 on ebay and minuscule things, 17x20mm. Info:
                      https://wiki.seeedstudio.com/Seeeduino-XIAO/

                      I'd not thought of them in relation to 3D printing, but for a small, light auxiliary interface, they should be good.

                      Robert J.

                      Printers: Overlord pro, Kossel XL+ with Duet 6HC and "Frankentron", TronXY X5SA Pro converted to E3D toolchange with Duet 6HC and 1LC toolboards.

                      1 Reply Last reply Reply Quote 0
                      • undefined
                        T3P3Tony administrators @o_lampe
                        last edited by 29 Oct 2021, 10:41

                        @o_lampe said in New Raspberry Pi Zero 2W:

                        mini toolboard MCU?

                        if someone wrote the code to use one of the pico processor cores to simulate CAN-FD fast enough then just maybe but that could well be impossible.

                        www.duet3d.com

                        undefined undefined 2 Replies Last reply 29 Oct 2021, 10:48 Reply Quote 0
                        • undefined
                          o_lampe @T3P3Tony
                          last edited by 29 Oct 2021, 10:48

                          @t3p3tony
                          I tried to find a Pico board with Sam-C21 and CAN-FD.
                          As Toolbord in the classic sense is difficult, but it could do some light duty chores, like extra fans, thermistors or other less timing relevant things.

                          undefined 1 Reply Last reply 29 Oct 2021, 10:55 Reply Quote 0
                          • undefined
                            T3P3Tony administrators @o_lampe
                            last edited by 29 Oct 2021, 10:55

                            @o_lampe i see using it as a coprocessor. There could be applications for a coprocessor (maybe not so much a toolboard but on a mainboard) but it adds significantly to the complexity of many things (think a firmware update).

                            www.duet3d.com

                            undefined 1 Reply Last reply 29 Oct 2021, 11:41 Reply Quote 0
                            • undefined
                              o_lampe @T3P3Tony
                              last edited by 29 Oct 2021, 11:41

                              @t3p3tony said in New Raspberry Pi Zero 2W:

                              There could be applications for a coprocessor (maybe not so much a toolboard but on a mainboard) but it adds significantly to the complexity of many things (think a firmware update).

                              I'd happily go that extra mile, if it helps the huge Duet2-community "over the hump" and enables it to benefit from future development.
                              The M0 processor has ~twice the power of the onboard MCU. If we'd use the onboard MCU as gateway and the M0 as mainprocessor, it would be a huge leap forward. (just dreaming)

                              undefined 1 Reply Last reply 29 Oct 2021, 11:43 Reply Quote 0
                              • undefined
                                T3P3Tony administrators @o_lampe
                                last edited by 29 Oct 2021, 11:43

                                @o_lampe I don't understand exactly what you are proposing? what would the board with the pico do? how would it communicate (and what hump are we getting over?)

                                www.duet3d.com

                                undefined 1 Reply Last reply 29 Oct 2021, 11:47 Reply Quote 0
                                • undefined
                                  o_lampe @T3P3Tony
                                  last edited by 29 Oct 2021, 11:47

                                  @t3p3tony the M0 could do the multi-stream gcode analysis, while the onboard MCU does the pulse-generating for steppers, PWM a.s.o.
                                  The hump is the limited RAM of the duet2 mcu

                                  1 Reply Last reply Reply Quote 0
                                  • undefined
                                    dc42 administrators
                                    last edited by 29 Oct 2021, 12:19

                                    @o_lampe said in New Raspberry Pi Zero 2W:

                                    @t3p3tony
                                    I tried to find a Pico board with Sam-C21 and CAN-FD.

                                    See https://duet3d.dozuki.com/Wiki/Using_the_Sammy-C21_development_board_with_Duet_3.

                                    Duet WiFi hardware designer and firmware engineer
                                    Please do not ask me for Duet support via PM or email, use the forum
                                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                                    undefined undefined 2 Replies Last reply 29 Oct 2021, 12:24 Reply Quote 0
                                    • undefined
                                      PCR @dc42
                                      last edited by 29 Oct 2021, 12:24

                                      f2fddd63-2106-4a92-93f1-d542bfe3369f-grafik.png

                                      undefined 1 Reply Last reply 29 Oct 2021, 13:03 Reply Quote 1
                                      • undefined
                                        o_lampe @dc42
                                        last edited by 29 Oct 2021, 12:27

                                        @dc42 I know the board, but it's out off stock and quite expensive. (27EUR vs 4EUR)
                                        But I'd still consider it as Duet2 CoPro as described above.

                                        @T3P3Tony I wouldn't mind to delete the last posts and start a new thread, although everything I posted about the M0 is IMHO also valid for the Zero 2W and any other SBC

                                        1 Reply Last reply Reply Quote 0
                                        • undefined
                                          T3P3Tony administrators @PCR
                                          last edited by 29 Oct 2021, 13:03

                                          @pcr nice! why the two different headers, one for Duet 3 and one for the 3 mini?

                                          www.duet3d.com

                                          undefined 1 Reply Last reply 29 Oct 2021, 13:16 Reply Quote 0
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