Circuit Lake

The project shows you how to build an automatic volume control system for TV-sets, home audio systems, etc. The system measures current volume level from Audio AUX output and controls audio volume by Infrared commands. The idea is simple – in many situations TV-set user has to adjust the volume: when he or she watch [...]

This autonomous tracking weather station is built based on PIC 16F877A and SIM900/300 GSM module. It takes (analog/digital) measurements and sends them to a web server over GPRS. It supports up to 3 Analog or Digital inputs. User can make it fully autonomous by adding a battery and a solar station.

This controller was developed using Renesas SKP16C62P Starter Kit Plus. Each remote controller is controlled via RF. There are four types of generic control: general purpose timer, sprinkler timer, cooler, and heater. Each Controller may have up to 4 stations, (the Sprinkler Timer may have 8 outputs by multiplexing the outputs). Each controller’s program is [...]

TeleSecretary is a low-cost Renesas M16C microcontroller-based remote PDA system. It contains a touch-tone decoder and generator, and digital voice recording and playback components. The touch-tone decoding and generating is handled by the Renesas microcontroller M32C/84.
An event database is built on the M32C/84 microcontroller to store the scheduled appointments. The M32C/84 on-board real-time clock (the [...]