ESP8266: Turn a $9 Body Scale into a Smart Scale – Part 1

Splash Screen of the SmartScale In this project I will show you how you can build yourself a fancy Withings-like body scale. I divided the article into two parts: Part 1 describes the hardware hack and Part 2 the software. In this project I used a cheap scale I bought in the local super market for 9 Swiss Francs (which is currently about USD $9.-) and I am optimistic that other digital [...]

Read more

ESP8266 based Plane Spotter – How To

#ESP8266 Plane Spotter
When I sit at my living room table I can see wonderful big airplanes in the final approach to Zurich (ZRH) airport or ascending to a far destination: Airbus A380 or Boeing [...]

New Weather Station Demo on Github

New Weather Station Demo based on Platformio
I have been working on a new demo of the Weather Station which is built as a platformio project. It has a few features which are not in the library demo: Wifi Signal [...]

ESP8266-Hack – Piggybacking OLED display on WeMos D1 Mini

128x64 OLED display directly soldered on a WeMos D1 Mini
Inspired by Mike Rankin's (@mikerankin) beautiful crossovers between an ESP8266 ESP-01 and an 0.96 Inch OLED I2C display I decided to try if there wasn't an easy hack to [...]

ESP8266: SSD1306 Oled Library Release

WeatherStationStencilFont
The "ESP8266 OLED SSD1306" is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all [...]

ESP8266: Continuous Delivery Pipeline – Push To Production

Continuous Delivery on ESP8266
The integration of the ESP8266 framework into the Arduino IDE brought ease of use for development. This was further improved when firmwares could be pushed over the local [...]

ESP8266 Peripherals: Indoor Positioning with IR Camera

DF Robot IR Camera Sensor
The sensor I'm going to talk about here is a very powerful one. And you actually might have a very similar one in your home somewhere. The DF Robot Positioning IR Camera uses [...]

Daddy Day Science #2: Heated Air Expands

Experiment Preparation - Pot with cold water, bottle, balloon and manual
Thursday - Daddy Day - Science Day! In the second experiment I wanted to show my daughter that air expands when it gets warmer. My favourite "science" book offered a good 5 [...]

ESP8266 Peripherals: Mini PIR Motion Sensor

PIR Sensor with 3.3V support
  The ESP8266 is all about Internet of Things, right? So lets start sensing something in the real world! What about (human) presence in your apartment? There are [...]

Daddy Science Day: The Potato Battery

A single lemon cell: 0.931V
I see myself as very privileged to enjoy a day alone with my daughter once per week. There are many aspects to it: it is a great thing for the relation with my wife, since I [...]

ESP8266 Peripherals: uBlox GPS Module

ubloxgps
Almost 20 years ago when I studied a few semesters of electrical engineering at the famous ETH in Zurich I had a lecture about the basics of digital electronics. And I [...]