Sonoff electric candle

Simple modification of commercial electric candle and installation of very popular Sonoff Basic relay inside candle to make it "smart". Batteries not needed, entire setup is powered from Sonoff!

DIN rail mounting of the Z-Wave module

Until recently Z-Wave modules for mounting on the DIN rail hasn't been available in the home automation. For this reason improvisation was the only solution, you can see one in the following text.

iPhone as a frequency generator

To show that iPhone is not just a fashion accessory, as many like to say, read below how to make it a useful device. It is a frequency generator with solid characteristics. Quality will satisfy the needs of amateur electronics and it will be sufficient for the basic measurements and adjustments in audio technology.
Only two components are required, assuming that you have the iPhone:
- Application "Freqgen" which is free and available in the AppStore.
- Adapter that you have to make. Construction is very simple, and the whole process is shown below.