I'm trying to replace a Nano with a Nano Every, but the TXD pin seems to not work. The TXD on the Every blinks but sends nothing to the RS-485 board it's connected to. Any thoughts?

Which RS485 board do you have and how have you wired it to the Nano Every? How are you determining that your RS485 board isn't receiving the data from the TXD pin?

I don't know the manufacturer of the RS485 board. It's from China (of course). The TXD pin from the Every connects to the TXD wire on the RS485. With the Nano connected, the TXD LED on the board will blink when the TXD LED on the Nano blinks. With the Every, its TXD blinks but the RS485 LED doesn't …

The Tx and Rx pins on the Nano Every are Serial1. Serial is for the usb serial and is separate.

[image] ptblake: The TXD pin from the Every connects to the TXD wire on the RS485. That sounds wrong. When the Nano transmits a byte shouldn't it go to Rx on the RS485 module ?

[image] markd833: how have you wired it to the Nano Every? @ptblake can you provide a drawing/schematic of how you wired the RS485 board to your Nano Every. The RS485 boards i have don't have a pin labelled TXD. Arduino TXD usually goes to a pin labelled RI, and the Arduino RXD pin usually g…

Its a little odd, but it is from the instructions, and it works.

Instructions from the manufacture say to connect TXD toTXT and RXD to TXD. It works fine with the Nano but not with the Every.

Can you upload a photo of your RS485 board or provide a link to where you bought it from?

did you use emulate nano ports options on every for compatibility?

Nano Every won't replace Nano

Projects General Guidance

blh64 December 8, 2021, 9:57pm 3

Despite the name, they are very different boards. This discussion has lots of the details: Nano vs Nano Every - #2 by Juraj

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Nano Every won't replace Nano

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