Heat pumps become louder and louder after a few years. This is often because the fan motor bearing suffers damage after 5 to 10 years. As a result, the outdoor unit gets noisier, runs unevenly, and eventually sounds like a truck engine outside the house. Bearing failure is rarely repaired, as the process is labor-intensive… Continue reading Heat pump too loud
Category: DIY
DIY DMX-USB-Interface
This post is about building a simple DMX-USB-Interface for 2€. Hardware The DMX standard to control lights and other effects is based on the RS-485 standard. All you need: Connect the 3-PINs of the XLR connector (also works with 5 PINs DMX or DMX over RJ-45) with the corresponding PINs of the RS-485 board. Software… Continue reading DIY DMX-USB-Interface
DIY Fohhn-Net NA-11 Converter Alternative
This article is about building an “USB to Fohhn-Net Converter” for Fohhn Audio devices for 2 € (instead of paying hundreds of Euros for the Fohhn NA-11 converter). Fohhn Net is based on RS-485, which is a simple standard for data transmission. So all you need is a USB to RS-485 interface – and a… Continue reading DIY Fohhn-Net NA-11 Converter Alternative