In few of my previous articles I have explained a handful of GSM remote control circuits using ordinary cell phones as the modem. All those designs incorporated the ringtone of the cell phone as the triggering signal. In this post we’ll learn how the same could be achieved but by using the vibrator feature of […]
Control
Control Two Submersible Pumps Alternately
In this post I have explained a simple water level controller circuit applicable for automatic toggling of two submersible water pumps alternately in response to a predetermined water level switching. The entire circuit is built using just a single IC and a few other passive parts. The idea was requested by one of the interested members of […]
Digital Up/Down Volume Control Circuit
In this post I have explained a simple digital volume control circuit using the IC DS1668 which can be used in amplifiers and all audio equipment for achieving a push button press up/down volume control facility. What are Electronic Rheostats The DS1668 and DS1669 Dallastats are electronic rheostats or potentiometers. These devices present 64 possible […]