Eric Bogers (288)

17-12-2020 | Touch keys are a ubiquitous these days, but there was a time (whether you believe it or not) when they were something very special! Let's ta...

18-11-2020 | The "big" ideas and projects of an electronics enthusiast are often not noticed by family and friends. A self-built oscillator or a servo co...

4-11-2020 | There are situations that you might like to know if someone has been at your door (and rang the doorbell) during your absence. With, say, ni...

1-11-2020 | In the previous installment (in the September/October issue of your favourite magazine), we racked our brains over the H-circuit and saw tha...

1-11-2020 | Here are, once more, a few little circuits to keep you soldering and to sharpen your experimentation skills when you don't feel like beginni...

1-11-2020 | You can build a DIY lap counter for a model race track. The number of laps is measured using an infrared reflection light sensor. The actual...

15-10-2020 | It's that time of year again when the leaves fall off the trees — and not just the leaves.

30-09-2020 | Most bathtubs have an overflow pipe to prevent the bathtub from overflowing if you forget that you have opened the tap. However, disasters a...

22-09-2020 | Before digital signal processing entered the stage, musicians had to use ingenious electromechanical contraptions to create certain sound ef...

17-09-2020 | Here is a simple circuit that measures changes in skin resistance. You can use it in a playful way as a lie detector. An ordinary ohmmeter i...