Circuit Lake

SAMEgen is a small test generator for the National Weather Service’s Specific Area Message Encoding (SAME) coding and may find use in both development of decoding circuitry and in testing SAME-enabled receivers. SAME is used by the NOAA Weather Radio (NWR) broadcasts and the Emergency Alert System (EAS) to disseminate weather watches, warnings, and [...]

The goal of this PIC 16F870-based project is to build simple function signal generator that can produce multi waveforms like sine, square, triangle, and saw burst sweep noise. The project uses R/2R resistor ladder network for a real fast and cheap D/A and a few other parts.

This java based circuit simulator is useful application for electronic student and hobbyist to learn electronic circuit You can simulate basic circuit like RLC circuit, Digital Logic Circuit, Opa-amp, MosFet, Passive Circuit, or combination analog digital circuit in animated schematic.

The MeetingMinder is time reminder for public speaker that give a warning when their speaking time will end. The project is built as indication light tower that has red, green and yellow 360-degree wraparound lights, mounted to a base which houses a large two-digit seven-segment display and the control circuitry. The tower colors indicate “talk” [...]

This portable Oscilloscope project uses Graphical LCD screen, 64*128 pixel dots (GDM12864A with KS0108 processor or other compatible) as display and Microcontroller ATMEGA32 as the processor. The project used an external ADC0820 converter chip to increase the speed.

This multi purpose project is built around MCU AVR AT90S2313. Besides as Frequency meter, the project can be used as Pulse Generator too (combined counter and frequency meter). It doesn’t have any front panel controls because the user interacts via an RS-232 terminal program at 9600 baud. The user controls reads data via an ASCII [...]

This portable 2.4 GHz Spectrum Analyzer is built inside a cell phone case, Nokia 3410, and used the phone’s graphical LCD to display measuring results. It uses AVR ATMega8 as main controller and CYWM6935 module. The software is written in C using arv-gcc under Windows (WinAVR). The program runs continuously and make around six or [...]