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How to compile Firmware / Bootloaders for BlueberryE Uno335

The BlueberryE Uno335 Firmware & Bootloaders

This post is about compiling firmware and bootloaders for the Uno335 a specialized variant of the wellknown Arduino/Genuino Uno board. The most significant changes are an onboard 512kbit serial SRAM and levelshifters to 5V to 3.3V for SPI and I2C, but this is not what this post is about.

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A Wifi switchable socket/plug

Eine über Wifi  schaltbare Steckdose

wäre für viele Gelegenheiten eine super interessante Sache (z. B. Kaffeemaschine aus dem Bett anschalten, den Kindern remote den Fernseher abschalten, ich denke jeder der hier landet hat schon eine Idee was er gerne machen würde. Hier wollen wir beschreiben wie man selbst mit eigenen Mitteln eine Wifi Steckdose völlig sicher selbst realisieren kann.

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Getting ESP8266 to work

probably almost everybody tinkering with electronics has heard of the wonderful ESP8266 MCU with embedded wifi. It is a really cheap, yet very powerful wifi module with an Arduino like hardware interface (GPIO, SPI, ADC ...). Usually it doesn't ship as a chip but as module. There are plenty of different modules and we focus here now on the ESP8266EX-12

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