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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.
@Bernd
Hello,
jumping in late ... it seems that this is no longer relevant for @Raik, but for what it's worth: I ordered expansion shields for ESP8266 from quite a few ebay sellers. Each and every order was cancelled by the respective seller after a few days. All for the same reason: "quality problems with the module". I now have quite a few ESP8266 lying around, but no adapter expansion shield :)
This is the type of module I'm talking about: https://www.ebay.com/itm/Duinopeak-ESP8266-ESP-01-WiFi-Expansion-Board-Shield-Without-ESP8266-Module-For/312730751293?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
I finally managed to obtain a different type of WiFi module here:
https://www.ebay.com/itm/ESP-12E-ESP8266-UART-WIFI-Wireless-Shield-for-Arduino-UNO-R3/254282142174?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
These have arrived, but i haven't managed to test them yet. Hopefully sometime during the end-of-year break.