Cool board. Impressive hardware!

@nerdhut

3 жыл бұрын

Yeah, I'm already looking forward to using it in different projects and builds! :)

What frequency was your sine wave? I assume it is running flat out so it is at its maximum frequency. Looking at the scope it was 27Hz? That seems extremely low.

There is No EEPROM memory, is there a way to save data before power down on this controller ?

@nerdhut

3 ай бұрын

Yes, you have many options! Some that come to my mind from the top of my head include using an external EEPROM chip or module (nerdhut.de/2019/01/17/eeprom-arduino/), using an SD card module, sending the data to a server, or storing the values in a hard-coded string in source code (read-only, e.g., config values).

You shouldn't complain about the box 🙂 just think a bit, a bigger and uglyer box will not attract attention and will not be lost in transit 😉 instead of them or you loosing the product in a small envelope.

I am having issues in decide what controller to get in between this one, Adafruit QT Py RP2040 and Adafruit QT Py SAMD21, I want something really small but just to control and play with rgb neopixels, that is all. Best regards.

@nerdhut

2 жыл бұрын

I think they are all great choices. However, the Adafruit boards come with an onboard NeoPixel that you can use for your experiments. You should also keep in mind that Adafruit offers stemma QT compatible NeoPixel rings and strips, so connecting a compatible Adafruit board to the pixel PCB would be a straightforward process.

Can I connect HC-05 Bluetooth module with this board? An immediate response would be appreciated. Thanks.

@nerdhut

3 жыл бұрын

Yes, that's possible. The two serial pins of the XIAO are the ones farthest away from the USB port. Once connected, use the Arduino IDE to write a program that communicates with the HC-05 module.

@vrushabhshah4291

3 жыл бұрын

@@nerdhut Thanks for the reply. The code will be same as the arduino right or any changes are required, say some libraries or stuff?

@nerdhut

3 жыл бұрын

You're welcome! Unfortunately, I don't know whether you can simply use existing libraries without modifications. But I assume that you can easily find a port for the generic Seeeduino board family, which the XIAO is also a part of.

@vrushabhshah4291

3 жыл бұрын

@@nerdhut Okay, I'll try and once again thanks for your help!!

Can you please confirm me that this xiao supports HID and can be used a rubber ducky? Does it have any reset pin?

@nerdhut

3 жыл бұрын

yes, the XIAO board has a reset pin on the underside. Please refer to the official wiki for further information on how to use it. As for the HID: According to the MCU specs, the controller should be able to act as an HID device (www.microchip.com/wwwproducts/en/ATsamd21g18#additional-features), but I'm not sure whether the XIAO actually supports this feature. Please refer to the official wiki or contact the manufacturer for further details. Lastly, I'm unfortunately not sure what you mean with the rubber Duck? If you mean whether you can put it inside one: yes, as long as the duck is large enough.

@mr.anirban6631

3 жыл бұрын

@@nerdhut well thanks for that information. If you don't know what's rubber ducky u should google 'rubber ducky'. One more thing if you find the rubber ducky interesting plz experiment with this board.

@nerdhut

3 жыл бұрын

oh you meant the USB rubber ducky? My bad, I thought you meant the squishy yellow toy. Haha that explains a lot! :)

@mr.anirban6631

3 жыл бұрын

@@nerdhut Yah I mean that usb rubber ducky 😅 could you please try that in this board?

@nerdhut

3 жыл бұрын

I'm sorry, but I don't have one

Commercially a powerful and certainly inexpensive processor, ... but unfortunately, many users end up with unrecognized and unusable XIAOs after an upload that has crashed ! And the documentation is very silent on this subject ...

@nerdhut

2 жыл бұрын

Oh, I didn't know that. Thanks for sharing! Is there any undocumented workaround or known fix? I have experienced a similar behavior with some Arduino boards. But with those, you could always force them into bootloader mode. Doing so would typically fix upload problems.

@michelfrance75

2 жыл бұрын

@@nerdhut I searched but it seems complicated and poorly documented. I do not know how to do. It would first be necessary to recover the recognition of the XIAO by the device manager. I think the bootloader or Arduino IDE I use in my case are not robust.

@nerdhut

2 жыл бұрын

@@michelfrance75 Huh, that's an interesting problem. I might look into these issues myself once I have more time.

@homoevolutus

2 жыл бұрын

They have a fix for this.

This review unfortunately did not include any information on - D/A conversion resolution - clock velocity - number and type of digital I/O - memory onboard - logic levels (5 - 3V) - additional ports support for ic2 etc It has been therefore not useful at all for me.