AVR Electronic Humidor

This Humidor project was designed with a Peltier module and Sensirion SHT1X series sensors. The project built to keep cigars in perfect condition by maintain preferred level of moisture and keep the temperature around 70 degrees. The core of system is based on a microcontroller ATMEGA-16 programmed with BASCOM-AVR. The application is broken into two sections the Menu system that allows configuration of the desired humidity and temperature and what units for temperature you would like to use and display. The Hardware consists of an ATMEGA-16 controller, 7 Tip120 Transistors, 1 DPDT Relay, MC78T12 Regulator, LM7805 Regulator, a few passive components, a 16*2 lcd, and a few connectors.

Tag : Humidity Project, Temperature controller, AVR project source

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.

CAN-Servo Controller

This dsPIC30F4011-based servo (position) controller receives commands via a CAN. If a DC motor does not have a rotary encoder, you can plug a contactless magnetic rotary encoder (CMRE) module into the board (via two SIL connectors) and provide (in a self-contained unit) rotary encoder and position control.

Mariano Lizarraga Fernandez, the designer, explains that the board in this project also fully configurable via a CAN network and no power-cycle is necessary for any change to take effect. The board has programmed PID controllers with selectable parameter from user. The controller gains, maximum and minimum pwm commands, and device ID are also configurable. All configuration values are stored in the dsPIC's EEPROM so once it is configured at the full contempt of the end-user, no more changes are required.

Download:
Project Documentation and Schematic (zip)