RF and IR Remote Control

This PIC based remote control allow you to control up to 8 devices by this easy constructable remote control. The project very flexible you can use it as radio remote control or infrared remote control, depending on the components. Each device output can be configured to be momentary (turned on while you press the button) or latched. Latched outputs can be toggled on/off by one button per channel, or turned on and off by two buttons per channel.

tag : IR remote control, RF remote control, wireless project control, src

Read More

AVR Wireless Streaming Radio

The project allow you streaming your radio broadcast wirelessly over internet. The wifi radio built using an Asus WL-520gu wireless router, an old USB audio headset, AVR ATmega8 and other part. If you are interested to build Wireless Streaming Radio, here is the requirement you need to prepare : Wireless connectivity through existing Wifi network; Audio output (preferably 44kHz, 16 bit stereo); Shoutcast/MP3 streaming audio decode; A display to indicate the station and currently playing song; An integrated amplifier and speaker(s); Several built in station presets; and Simple user interface, using standard radio controls (volume, tune, etc).

Gary Dion said that the radio can be controlled over Ethernet and also IR transmitter. The firmware in the project is written in C. You can download the source code here and router shell script. The project inspiration come from Jeff Keyzer.

Read More

LED Psychedelic Lights

This project aim is to reproduce the old style psychedelic lights system that was very popular in the 70s. Being in the "digital era", the technical solutions adopted are quite different from what was characterizing their predecessor system. Old style lamps have been replaced by three high power LEDs; all filters, previously implemented with analog components, have been realized with digital processing techniques; input stages have been replaced by one A/D converter and one digitally controlled variable amplifier, that is able to warranty the best signal amplitude for the system.

The project requirements are related to technologies adopted: high power LEDs need to be driven with a constant current; digital filters need a fast DSP engine, to be implemented, and an A/D converter is required to transform an audio signal in a numerical representation. Control data communications between central processing unit and external analog components require to have an SPI on board and, last but not least, the capability to link the system with a PC could be very useful for firmware debugging and for tuning some parameters in real time without needing expensive developing tools. The project is designed by Marco Signorini.

Read More