Description: This project is basically decoding a DTMF signal to digital form where an microcontroller detect the signal. The project uses an integrated decoder chip MT8070DE which decodes all 16 DTMF tone pairs in to 4 bit code. AVR Microcontroller reads these codes and outputs them to LCD as characters. DTMF receiver stores last 234 [...]
Description: This project describes how to build a simple wireless RF Temperature transmitter which uses TXM-433 module ,AVR micro controller and the PC side consists of SILRX-433 (Receiver) connected to PC via RS232 port. RF Temperature transmitter sends six bytes of data at fixed interval. Module measures three temperature values, light level at photocell and [...]
Description: This is a small 8 Bit Micro controller board for high performance systems. Micro controller: ATMega128 Hardware: up to 128kB external SRAM (Configuation with 0Ohm resistors). Plugable into your electronical design. External Batterie drive possible. External Brown out detection. Low drop voltage regulator. 2x V24 level converter. In system programable. 32.786 kHz crystal. For [...]
Description: Bright LEDs are cheap today. So many new projects with large amount of LEDs can be done. But there is one problem – large amount of LEDs consume large amount of energy. This is a project that implements special technique that allows driving efficiently hundreds of LEDs. This is a large PCB where 25×25 [...]
Description: This Distance Measuring project interfaces an application module with AVR microcontroller and two SFR04 sonic modules. Measuring principle is very simple. Measure time between sonic transmission and echo reception and then divide it by sound speed in this environment. The distance measured is displayed on LCD screen. This distance meter can measure distances from [...]