Arduino board with 3 uarts

Using Arduino Microcontrollers
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Hi,

I am looking for Arduino board with 3 or more Uarts. The only one I could find is Teensy 3.0. Are there any other boards that are supported by Sketch programming environment?

Thanks and Regards,
WonderfulIOT

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I've got almost zero knowledge of the ARM based Arduino boards but I did see some that used the ATSAMD21G18 processor (like the MKR FOX 1200 for example). The Microchip datasheet says that there are 6 serial comms interfaces that can be configured as UARTs or I2C etc.

Whether these pins are broken out to the edge connectors or not, I don't know.

There's also the MEGA1280 and MEGA2560 based boards. These apparently have 4 UARTS, according to the datasheet.

EDIT: A quick look on a well known auction site and there are MEGA2560 boards available for just under 10GBP.

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The Mega boards do indeed have 4 UARTs, 1 is used for the serial port, the other 3 are available for whatever you like.

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The "nano every" has 4 uarts. I think 3 are useable (broken out) but you'll have to check the product info. I use MegaCoreX which makes it easy to setup the pin configuration ...

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For multiple serial interfaces, the STM32 "Bluepill" (STM32f103c8t6) is also worth looking at. It is very cheap and well featured. You can program it via the Arduino IDE. I used one for a GPS / Satellite clock.

Here is a getting started guide: Program "blue pill" with STM32 Cores in Arduino IDE · One Transistor
But be aware that there is a learning curve which you avoid by staying with the AVR (Uno/Nano/mega etc.) architecture.

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Arduino DUE.

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