UART0 on newer boards

The newest boards RAK19003 rev. E and RAK19010 both have RX0/TX0 (UART0) accessible through the header pins, compared to RX1/TX1 (UART1) in the older boards.

Do you plan to continue with this trend, i.e. changing the header pins to UART0 for older boards, including RAK19007?

This is especially interesting to us, as the Link.One device uses RAK19007 and doesn’t have a useful UART port, as the exposed UART1 is already occupied by the BG77 modem. The other UART port, UART0 is unaccessible on the device.

One can use RAK19010 in Link.One to circumvent the problem but it increases the cost slightly.

Welcome back to the forum @lukasp

This is not an easy to solve problem.

Using RX0/TX0 on the pin headers makes sense, as other modules are already using RX1/TX1.

But
(1) Customers who rely on having RX1/TX1 on the pin header will be angry (we had this negative feedback when we changed the RAK19003)
(2) We have one WisBlock Core module that doesn’t have RX0/TX0, the RAK3372

We have a change on the Base Boards coming up, but no decision made yet regarding which UART should be on the pin headers.

Hope we can get some feedback from other forum users here to this subject.

1 Like

Understood, it’s not an easy decision.