I tried the Mega 2560 r3 instead, and this seemed to work (I don't think the board i'm using is genuine- on the front it says mega 2560, when i think it might actually be an r3).



The programmer options for the Mega 2560 are actually in the FCD (the chip definition file used by Flowcode) and ...

Please post your project (.fcfx) and the generated .c file as that will help us determine the issue.

WingNut wrote: ↑

Mon Aug 10, 2026 5:15 pm

I think they mean any string needs to be in quotes

Yes, unless it's the name of a string variable.

Right-click the "properties" heading and select "Show Titles" instead of "Show Variables".

See Leigh's comment. The "color" also needs to be in quotes.

Thanks for the update - it's really interesting.

When you come to use Flowcode Web Developer, let us know if there are things you'd like to do that are not already there. For example, other components or better information on doing certain things with it.

We have plans for improving this mode of ...

And the Value property should also be a string - i.e. "0". Note that some versions of Flowcode automatically convert a number to a string in this case.

Thanks for keeping updated on your adventure!

"Clean Start" is a MQTT v5.0 setting.

The Web Developer component uses MQTT v3.1 or v3.1.1 and has the "Clean Session" flag as a property of the component, and also the QoS setting as a parameter when publishing or subscribing to a message.

I'm not as ...

Excellent. We'll get that officially released soon, but you should use this version until then.

Thanks, Martin.

For anyone using their own components folder, more info about this is on the following wiki page:
https://www.flowcode.co.uk/wiki/index.p ... irectories