Posts made by SR

I used this CAN lib, works in Basic CAN mode with SN65HVD230.

Even more due to the pin mux of the ESP32, you can also use different pins, e.g.

#define CAN_SPEED CAN_SPEED_250KBPS
#define CAN_TX GPIO_NUM_17 // TXD2
#define CAN_RX GPIO_NUM_16 // RXD2

Because I used TXD2 and RXD2, I'm currently considering to check also the RS232 MAX based TTL converter and in case it works, maybe I will put only a 4 or 6 pin grove connector into the M5Stack proto board with housing and place the tranceiver into an external plug: one connector would then allow either CAN or Serial :-)

High Speed CAN transceiver can be used by custom design, I checked it based on my proto board:
http://forum.m5stack.com/topic/59/diy-mini-proto-board

Please post the line of code where you are creating the connection to the broker.

Is the broker properly configured in respect to port usage (e.g. 1883 for no encryption/no authorization)?

Yes, pretty close to your design.

No. There is the button module completely replaced. I would like to keep it attached. I thinking about some kind of encloser around the housing of the M5Stack with a slide in mechanism. That was also the reason way I was asking in this thread for STL model of the hole case.

My idea for a housing of the proto board would be more like a case that can pick up the complete M5Stack inclusive the button board without disassembling it at all.

It's a standard 7x5 cm board with interconnected holes. The mini bread board on it measures ~ 4.5 x3.5 cm.

@Kryten Thank you, this looks already good.

Better would be the housing of the base board because I need to align the pin break out area with the stands of the proto board. But it's a beginning.

Maybe also in your case also this workaround helps during using VMware.

Yes, but currently only the housing 3D model for the proto board is available on github. So it would be helpful to make also the core and base as STL available there. My idea is to create a "housing" which would allow to fix the core incl. base plus this extension in/on it.

@m5stack Thank you.

I would be very happy if the core and base modul housings could be made available as 3D STL files. Then I could try to create a custom case for this extension board.

@shiul93 在 Noise on speaker 中说：

Also since this noise started the upload process fails sometimes.

The "one" klicking noise is little to be expected in some situations, but a continous high pitched noise I never observed. Is the base board properly connected to the core module? You would like to double check it and maybe add two M3 screws with proper length (don't use to long ones) to it and test it again.

I just started working with the M5Stack two days ago and I've to admit that's a realy nice "thing".

My exploration is currently limited by 2 issue:

• Download problems (due to weak reset handling like may others)
• Limited availability of extension boards (at least in Germany)

In order to tackle both problems, I decided to pull out my soldering iron and created a mini bread board which connects to the extension port on the right side of the M5Stack:

The board directly connects to the ports of the M5Stack and contains beside a capacitor to resolve the download trouble also an adapter incl. screw terminal I'm using to connect a high speed CAN transceiver plus a D-SUB plug.

This was a quite nice example to go ahead a simple "hello world" ;-)

I hope that in the future the download problem is going to be solved inside of the M5Stack HW and that a reseller like Amazon or Conrad would become available also in Germany (I would really like to get hands on the proto board with housing and the self balancing robot extensions).

One nice way for a permanent fix would be to solder the capacitor inside of the Proto board with extenasion:

https://www.aliexpress.com/item/M5Stack-Official-Stock-Offer-Proto-Module-Proto-Board-with-Extension-Bus-Socket-for-Arduino-ESP32-Development/32843231933.html

But this is not sold seperatly at all.

I've got the same problem.

By adding a capacitor, I was also able to solve the issue. But for me this looks more like a weak reset circuit in the M5Stack board rather than a drive issue. At leat adding the capacitor is is more a workaround rather than a solution.