Lux meter circuit atmel attiny26-16 microcontroller based on the value of the LED displays on the display lux with LEDs placed on 2sk1061 MOS...

I am trying to design a digitally controlled analogue oscillator. The idea is that a control voltage is generated by the a microcontroller (Arduino) which is used via the 2 op amps, resistor and capacitor network which forms a integrator circuit. The....

There are several ways to read multiple switch inputs using a reduced number of microcontroller-unit (MCU) pins. For example, you can use an analog MCU pin to read multiple switches by assigning a unique voltage to each switch through a resistor network, or....

using only total of 7 pins from your microcontrollers GPIO. So LCD module will cost only single port out of fours. >> The EN line is called "Enable. " This control line indicates to the LCD that we are sending it data. To send data to the LCD, the EN should....

This is another project which fullfills a need. I once built a frequency counter using plain TTL chips. That was long before the CMOS HC versions, even before LS was available. It uses only 4 chips - 3 HC TTL`s and an Atmel At90S2313 microcontroller. It has....

This ISP Programmer can be used either for in-system programming or as a stand-alone spi programmer for Atmel ISP programmable devices. The programming interface is compatible to STK200 ISP programmer hardware so the users of STK200 can also use the software....

The FX919A is a CMOS integrated circuit that contains all of the baseband signal processing and Medium Access Control (MAC) protocol functions required for a high performance 4-level FSK Wireless Packet Data Modem. It Interfaces with the modem host processor....

The programmer uses serial signaling scheme to program the chip in circuit. The signaling is carried through the programming clock (PGC or ICSPCLK) and the programming data (PGD or ICSPDAT) pins. In addition, the MCLR/VPP pin is used as either a high voltage....

The clap sensor is a simple circuit that incorporates a PC microphone, a microcontroller, and an output. The following diagram shows the logical circuit design: I chose the ATtiny84 microcontroller for this project because I`m familiar with the....

AH1751 is a single-digital-output Hall-effect Sensor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an Amplifier to amplify Hall voltage, and a Comparator to provide switching hysteresis for noise....

The Flip-Flop Robot drives forward until it hits an obstacle, and then reverses until it hits another obstacle. This back-and-forth process continues indefinitely. By limiting the functionality to this very rudimentary behavior, it can be generated from an....

Here is a simple code for reading tags from the id12 RFID reader. It should be quite easy to modify if you know the dataformat your reader is sending out. Here is how to hook it up for serial communications, either using a microcontroller like arduino or....

This circuit is based around the PIC 16C84 (or PIC 16F84) microcontroller. This chip is actually a small computer contained in a single chip, including RAM memory, EEPROM, I/O ports, CPU and so on. When you buy this chip, it comes empty with no program on....

Microdot - wrist watch LED pattern timepiece Another RGB Sunset Productions production! This project is a circuit board for making a wrist watch size versi....

learn to use microcontrollers to create traffic-light applications. In this project we will use microcontroller AVR-007 from Circuits-Home. Before creating the program, the first job we have to do is understand about the hardware specs...

This circuit is one of the simplest voltage to current converters to drive low loads. In this example a small 0, 25 Watts speaker, with 8 © resistance, is driven. It is suitable for microcontroller designs or any other circuit that uses PWM (TTL logic). You....

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The purpose of the layout control mother board is to provide a simple way to allow people to control portions of their layout. The layout control motherboard consists of a single microcontroller that interfaces to the MRNet bus and a number of slots into....

This project is output port expander of microcontroller 8051. In this project we will learn, how to interface a large load bank with microcontroller 8051. In this load bank project, up to 50 solid state relays are interfaced with microcontroller using shift....

The TPS6420x controller is designed to operate from one to three series-connected cells or from a 3.3 V or 5 V supply obtained from a USB port. At its output it can produce 3.3 V at 2 A, suitable for powering a microcontroller-based system. With a suitable....

A popular project among microcontroller aficionados is to build a radio-controlled clock. Tiny receiver boards are available, with a pre-adjusted ferrite antenna, that receive and demodula..

As found in SLAA458, the revised pulseoximeter application, I`ve attached an image of the USB schematic that is used to output collected data. I just had a few questions about this schematic. 1) What do J3 and J6 correspond to I can see the corresponding....

As you see in the circuit above the four pins "Controller pin 1", 2, 3 and 4 will control the motion and direction of the stepper motor according to the step sequece programmed in the controller. As already discussed in case of L293D, Here in this circuit....

This project shows how to create an MB Electronics Simon game clone using an 8-pin PIC12F683 microcontroller. The game includes a full emulation of the original Simon `game 1` and the ability to select from 4 skill levels which control the number of colours....

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The ADUC831 MicroConverter is a fully integrated 12-bit data acquisition system-on-a-chip. Like all of ADI`s MicroConverter products, it features precision A/D & D/A conversion and a Flash Microcontroller on a single chip. For detailed documentation on the....

FIG. 1 (A) illustrates the circuit diagram of one embodiment of the fluid level detector of the present design. The supply voltage for this circuit is typically provided by a 12-volt automobile battery which is reduced to a 5-volt DC source voltage by means....

When trying to move things with microcontrollers, there are basically three kinds of motors that are most useful: DC motors, servomotors, and stepper motors. Most all motors work on the electrical principle of induction. When you put electric current through....

This project displays how the Nokia 3310 LCD can be interfaced and driven using the PIC16F628 microcontroller. The code is written in Hi-Tech C and the character table is embeded in the source code. The Nokia LCD has 84x48 pixels and is divided to operate in....

When firs time found this article, i think it`s a great project using only few component. I like microcontroller project based on LED. And as you know this project very simple. I must try it. one day "I was always fascinated by the emergence of patterns. One....

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We are using 6v/2amps 1. 8degree stepper motor. In this circuit CD4050 hex buffer using to connect to the microcontroller. The output of cd4050 is connected to the TIP122 of the BASE. The Emitter and collecter is conneted to 1N4007 diode the colleter of....