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Automated Juice Mixer

Introduction Sound Bite The Automated Juice mixer is a juice mixing device that allows user to create desired drinks with up to four different ingredients through a user friendly interface. Summary Mixing juices can be a very tedious job.  We have created a juice mixer that allow user to mix drinks with desired amount and manage their recipes with ease.  We use RS232 serial port connection between the compu ...

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Night Light Saver V5.0 using AT89C2051

Introduction The Saver V5.0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost, easy installation, no battery backup and no EMI. The AT89C2051 uses external oscillator generated by schmitt trigger gate CD4093, ~680kHz. Reference frequency was derived from 50Hz main line. Time setting only allows at 18:00 by pressing ...

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Night Light Saver V6 using AT89C2051

This new version has internal Ni-MH battery backup, reset button and simple time setting. Now the circuit board was embedded with lamp fixture. Preset turn on period is from 18:00 to 22:00 everyday. You may let the saver turn on whenever you want. The period of time on can be reprogrammed with sdcc. Howvere this project is not recommended for beginner. The circuit uses transformerless supply and no galvanic ...

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Air-Mouse using ATmega32 microcontroller

I. Introduction The Cornell University Airmouse Initiative is a motion sensing glove with buttons on it that plugs into your computer to function as a mouse. Many tasks that are performed on the computer require the use of both a keyboard on the mouse, and many people find it frustrating and awkward to have to switch back and forth between them. So, we've created what we believe to be the solution to this d ...

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The Reflow Soldering Oven with LCD Display using ATmega32

Introduction Our project consists of making a reflow soldering device using a normal toaster oven with a graphical LCD display for control and GUI. Soldering is an important and difficult task for custom printed circuit board design especially for integrated circuits that come as chip packages that are impossible to solder by hand. This is particularly true for ball grid arrays (BGA) and small-pitch quad fl ...

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ATMEL AVR ATMega 8535/16/32 and ATMEL AT89S5x Family Learning Kit

Both Mainboard Features Pin compatible for 40-pin AVR and AT89S5x family Microcontrollers Single sided PCB, header for 4 I/O ports, ISP port and RS-232 port Built in +5V voltage regulator LM7805 with heatsink Built in +5V and +12V (depend on input voltage) with terminal screw connector for further expansion Onboard In System Programmer header Schematic Included Both mainboard is identically appearance with ...

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Door Chime Privacy Sentry using Attiny12

An ATtiny12 controller as a timer and some switching circuitry turns the doorbell off for 10 hours at the same time each day. The string of resistors across the top of the board are series connected to make a 728 Ohm 2 watt resistor. The slide switch is used to switch the circuit between the test and operate modes and the large round component to the left of the switch is the 0.033 farad capacitor. Download ...

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