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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.
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.
On 20th of October we (BlueberryE represented by Engelbert and me) visited the München Arduino Meetup. We did a short presentation of about 12 slides and later on entered into some demos that all luckily worked well.
our friends at activestatistics.io are working on an online platform targeted towards the Internet of Things (IoT). It spans from a simple datalogger to a sophisticated online data monitoring and analysis system. It is built as client/server system where the server is centrally provided by them and the client can be as small as our Uno8266 uploading data using the MQTT protocol.
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