| As practically every Elektor reader will attest, electronics can be a lot of fun. The circuit described here, a small electronic game for tw...
Stefan Hoffmann (12)
| An electronic dog whistle tcapable of producing two alternating high-frequency tones. A design like this has several advantages over convent...
| This jogging timer emits a brief tone using its piezo buzzer indicating how many o ten-minute periods have elapsed using a series of eight L...
| The circuit idea given here serves to switch off lights and other appliances centrally with a minimum of fuss.
| This circuit detects when a window is open (it can also be used with a door), indicates that the window is open by means of a red LED or a b...
| If you forget to switch off the light after leaving a seldom used room (such as the loft), there’s a strong likelihood that it could remain...
| The rules of the ‘123’ Game are described in the ‘123 Game – all MCU-free’ article. Naturally, a more luxurious version can be built with a...
| This is a reaction timer game between two players, red and green. Each player has a pushbutton in front of him that he must press at just th...
| Although this alarm is designed to protect valuables left in a tent, it can also be used as a baggage alarm (either on or in one‘s bags) and...
| This electronic game pits a human player against the ‘machine’. The opponents use a common ‘game token’ and take turns moving along a path b...