10MHz DDS Sine/Square Function Generator based on the AD9835 using PIC16F628

An extremely simple and low cost Sine/Square wave generator based on the Analog Devices AD9835 Direct Digital Synthesis (DDS) Generator chip. The frequency can be set for any frequency from 1Hz to 10MHz in 1Hz resolution steps! All this with three push buttons and a novel "sliding window" LED display. The controller chip is a Microchip PIC16F628. There is no wiring, and the PCB fits into a standard UB3 Jiff ...

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Rotating Sprocket Wheel Generator using PIC16F84

Background My friend Arthur, in his lifelong quest for circuits that don't really do anything useful, but are really neat nonetheless, built a really neat Lissajous pattern generator. This Lissajous pattern is not your traditional circle, oval, or figure-8, it is a circle with varying amplitude, in a pattern that makes it look like a sprocket. Not satisfied with that, he also made it so that the sprocket ro ...

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STEAM GENERATOR using PIC16F873

Introduction This program is a steam generator controller that is intended for use in a residential steam shower. It controls water inlet and drain valves, power to the heating element, and various level and thermal sensors. Features Push button automated control of the steam shower. High and low steam rates, extendable cycles, error conditions are sensed and handled. Specifications Power: 220VAC, 3000W Tim ...

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Wavewatch, a soundcard oscilloscope and waveform generator

Features Features are summarized herebelow, and can be seen in the wavewatch13 (updated 15/05/2015). Up to two channels (A&B) at 44100Hz sampling frequency, Time range from 10µs to 500ms, Channel gain adjustment with voltage estimation based on online tuning, Channel Enable/disable, offset with dedicated marking Channel triggering source and level selection Automatic and single shot triggering mode, wit ...

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Microcontroller based Morse Code Generator with Applications

The term Morse Code generator is an ancient language, used to transmit the data or information in the form of a series of ON/OFF buttons. This language can be directly understood by a skilled observer who knows the Morse code without any special devices. Understanding of this language is very difficult for the people. Because, this code is denoted by a unique series of dots & dashes or dahs & dits. ...

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Emergency Excuse Generator using PIC16F690

This device is a must-have for any respected professional. Any time the need arises, you will have an original, freshly-generated excuse ready in seconds. One press of the button can get you out of a tight spot ensuring smooth sailing toward retirement and guaranteeing that you don't have to perform any actual work. How does it work Simple: The device continuously monitors and decodes the brain waves coming ...

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Simple nanosecond-width pulse generator provides high performance

  If you need to produce extremely fast pulses in response to an input and trigger, such as for sampling applications, the predictably programmable short-time-interval generator has broad uses. The circuit of Figure 1, built around a quad high-speed comparator and a high-speed gate, has settable 0- to 10 ns output width with 520 ps, 5V transitions. Pulse width varies less than 100 ps with 5V supply var ...

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LT3095 – Dual-Channel Low Noise Bias Generators

Features Generates Two Independent Low Noise Bias Supplies Boost Regulator: Wide Input Voltage Range: 3V to 20V Adjustable Switching Frequency: 450kHz to 2MHz Synchronizable to External Clock 950mA Power Switches Integrated Schottky Diodes Internal Frequency Compensation Linear Regulator: Wide Output Voltage Range: 1V to 20V SET Pin Reference Current: 50μA Low Noise: 4μVRMS (10Hz to 100kHz) High Frequency P ...

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1Hz – 2MHz Function Generator with XR2206 using pic microcontoller

1Hz - 2MHz Function Generator with XR2206 Component List: XR2206 - Function Generator IC Function Generator PCB RCA Gold Plated Connector SW1 - 4-DIP Switch SW2 – (Sine / Triangle) / Square Switch SW2 – Sine / Triangle Switch 1x 3-PIN Gold Plated Male Header 2x 2-PIN Gold Plated Male Header P1 - 100K Potentiometer (Frequency – Coarse) P2 - 50K Potentiometer (Frequency – Fine) P3 - 100K Potentiometer (Amplit ...

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