![Air Ioniser [071072]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimages%2F10%2F20170613093206_071072-51-air-ioniser.png)
| Allergic for grass pollen, trees, pollution, your cat, etc. This project, published in June 2009, might help you!
Hedwig (6)
| Today we got a surprise parcel from Germany. An enveloppe just containing a circuit board and nothing else, no name, no clue, no nothing...
![500 ppm LCR Meter [110758]](https://cdn.xingosoftware.com/elektor/images/fetch/dpr_1,w_800,h_340,c_fit/https%3A%2F%2Fwww.elektormagazine.com%2Fassets%2Fupload%2Fimg%2Fpublic%2Foriginal%2F110758-54a-rev-1.jpg)
| The remarkable precision of this device and its amazing ease of use are the result of careful design.
| The remarkable precision of this device and its amazing ease of use are the result of careful design.
| Elektor's clock galary / museum. Which clock to you like most? Sputnik Time Machine.
| Elektor's clock galary / museum. Which clock to you like most? Sputnik Time Machine