I wasn’t really happy with the light which comes with my 30 l aquarium. But I have a lot of white 3 W LED laying around. So we will build a new LED light for the aquarium. Bill of material 3x Aluminium heatsink for 4 x 3 W LEDs 1x Constant current source 11-20W 350mA … Read more
Two days ago it finally happened. After months of research, I finally ordered my first 3D printer. It is a GRR Neo (German RepRap). The GRR Neo is a fully assembled 3D printer. I want the printer as an additional tool in my toolbox and don’t want to tinker on the printer itself. So, in … Read more
To improve the efficiency of automatic garden watering systems, I tested some methods to measure the soil moisture. Mainly I tried resistive and capacitive methods. For connecting the sensors to a home automation system I need an adapter circuit. It should read the sensor periodically and send the data to the home automation system. All … Read more
Here is a new LUA script example for your ESP8266 running NodeMCU. The script creates a TCP server listening on port 80. Each time you receive data on the server, it toggles the LED connected to the ESP8266 and sends a message back to the client. If you need help with installing NodeMCU on your … Read more
In our last NodeMCU post, we covered the installation of NodeMCU on our ESP8266 board. Now we can start to load full LUA script files onto the ESP8266. I will show you how you can do this with a quick example. Needed software You need a terminal software to communicate via the serial interface of … Read more
Here you can find the new post from 2016 A little instruction on how to flash NodeMCU on your ESP-01 module. Then you can run LUA code on your ESP8266. Hardware needed: ESP-01 module FTDI UM232R as USB-to-serial adapter (or a compatible adapter) Software needed: Git Python 2 Hterm (or any software to view serial … Read more
Here is a little gallery with pictures from my vacation in holland during the Autumn vacation:
We got a lot of dragonflies visiting our pond lately. So, I tried my macro lens and waited for the right moment to take a picture. Here just one picture as a result: Shot on a Canon 60D with a Canon EF-S 60 mm f/2.8 Macro
In the last article about my ebb and flood system was some pictures of the growth in a month. So here is an update on the state of my grow box.
Before I describe my ebb and flood system, here a review of what I tried in the past. I tried the micro drip hydroponics system last week. It works fine for my neglected pepper plants, they got healthy new roots. It is a little difficult to build. You have to get all the little hoses … Read more