I have found the problem. It's a mix up between Serial1 and USB console. Forcing the console on USB did the trick. So now the system is working in the same way, connected to IDE or disconnected. Thanks for your help and explanations.
GeekBot
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I have found the problem. It's a mix up between Serial1 and USB console. Forcing the console on USB did the trick. So now the system is working in the same way, connected to IDE or disconnected. Thanks for your help and explanations.
GeekBot