Posted on 07 May 2008
The EnvStick is cheap, homemade temperature sensor that plugs into a USB port. It provides a simple way to collect a room’s ambient temperature.The EnvStick shows up as a serial port - a COM port on Windows boxes. You can see the typical output (on a program like Hyperterminal) - it waits a specified number of seconds, spits out a temperature reading, and starts waiting again. If you press “p”, you can set the number of seconds in between each temperature reading.[more]
Posted on 19 Feb 2008
This is an infrared remote control receiver for Arduino.It woks fine with any RC5 format remote control.The received RC5 code will be send to the serial port to be read on the serial console hyperterminal on windows at 9600 Baud-8-N-1.[more]
Posted on 12 Feb 2008
The DTMF decoder 2 is a useful tool used for decoding DTMF (Dual Tone Multi frequency) generated by telephones. The decoded digits are viewed on a 16×2 LCD screen. The DTMF decoder can be directly connected to a Serial port to view the digits in HyperTerminal on a computer. The decoder stores the last 234 received digits in EEPROM. The contents of EEPROM can be viewed on the LCD screen via two scroll buttons. Total power consumption is 12mA. The DTMF decoder has two inputs. A RJ11 jack for connecting to the phone line and a 1/8″ audio jack for connecting to a scanner, tape recorder or other audio output device.[more]
Posted on 01 Feb 2008
Here is PC Stepper Motor Driver designed by avrprojects.net.With this circuit you can control two unipolair stepper motors in full step mode via the RS232 serial port of your PC. A terminal program such as Hyperterminal can be used to control the stepper motors. The stepper motors can be driven one at a time.[more]
