Bluetooth in a room where arc welding is going on

Projects Networking, Protocols, and Devices
1

I'm working on a project that is a accessory to a TIG welder that involves two Arduinos communicating via UART. I'd like to make it wireless with something like a couple of HC-05 serial pass through modules. I know that arc welding and bluetooth don't mix very well. I tried my Bluetooth earbuds and there was definitely a lot of interference when the welder started up.

My application will only require about one byte every 30 or so Msec. My question is what will the error rate be and what will the errors look like? Will some percentage of transmissions fail to complete? Will most transmissions have at least one bit in error or will a significant percentage be correct and the others have one or more errors. The values being sent will change slowly, so I can send the same data multiple times and do some error rejection.

Depending on the response here, I may set up a test and see if it looks feasible. I'm open to suggestions about alternate hardware as well. For reference, the Arduinos are both Nano Everys.

Thanks in advance.

2

The answers will come when you develop/use a protocol that includes error checking. Unless you check for errors, there are none!

3

I think that that will be the best way. Let the sender send a known sequence of bytes and monitor the output of the receiver for missing or corrupt bytes.

4

IME, it's random. You'll get a certain amount of packets that just don't show up (the delivery rate drops off) and some that show up but are corrupted. I don't think there's much you can do about the former, but the latter can be helped by an error detecting protocol.

5

Hello jerholz1

Take a view here to get some ideas: