ESP8266, ThirsDee: 3D printed casing arrived

This was my first take ever at designing something for a 3D printer. Since I didn’t have a 3D printer available with a big enough printing area I ordered it online at Sculpteo.com. And only a few days after my order I received a nice little package from France today. Tada, the cover for Thirsdee, the intelligent plant helper! As you can see from the.....

ESP8266: Meet Thirsdee, the Intelligent Plant Helper!

It’s amazing what you can do with just a few components: a load cell, a high gain analog-to-digtal converter and a NodeMCU module. You can for instance measure the water consumption of your dear plants. If you combine the previous mentioned components with a OLED display you can even visualize the current water level in the plant pot. And if the level reaches a critical low yo.....

ESP8266: Calibrating the Wifi Scale With Temperature Compensation

In my last post I talked about my self made scale. There are plenty of applications for a sensor that can sense the weight of things. But I guess the scale should not be tared (or set to zero) every time the ESP8266 wakes up from sleep. The load cell is basically a resistor that reacts to tearing and pushing of the metal bar. But like all resistors, they are prone to temperature drift. Thi.....