Mode Zero

Have any of our boffins looked at, or done anything with this DIYMore board? The specs, including onboard xtal oscillator, in such a small package while still using standard pin spacings, look impressive.

Seeeduino XIAO Microcontroller SAMD21 Cortex M0+ Nano 48MHZ SPI I2C

https://a.aliexpress.com/_mMlmHQh

Might be ok, maybe not....instructions in the link say no more than 33v on i/o's....think that should be 3v3.
Crappy details like this makes one wonder about the rest.

bluejets wrote: ↑24 Apr 2021, 02:09 ......Crappy details like this makes one wonder about the rest.

True, but this time appears to be poor copy & paste rather than a questionable product.
3.3v is correct.

I checked both the Seeeduino website:

https://www.seeedstudio.com/Seeeduino-X ... -4747.html

And the wiki:
https://wiki.seeedstudio.com/Seeeduino-XIAO/

Item Value
CPU ARM Cortex-M0+ CPU(SAMD21G18) running at up to 48MHz
Flash Memory 256KB
SRAM 32KB
Digital I/O Pins 11
Analog I/O Pins 11
I2C interface 1
SPI interface 1
UART interface 1
Power supply and downloading interface Type-C
Power 3.3V/5V DC
Dimensions 20×17.5×3.5mm

I've got some and have programmed them, using the normal serial, and via a programmer soldered to the extra 'test point' pads on the bottom of the board. They don't have enough I/O pins for many of our transmitter projects. Obviously they could be used for a single channel encoder, but we already have several alternative chips for those. Also would be good for airborne projects that don't need too many pins, nor 5V operation.

They have lots of processing power and memory, compared to standard 8-bit microcontrollers, and in a nice small package. If anyone has a project in mind that requires such features, the XIAO is a good choice.