Building a computer-controlled LED lamp with an ATMEL microcontroller....

Diode D1 and resistor R1 provide the VDD isolation when programming the 24 pin devices. The jumper J3 must be shorted for 24 pin devices, and open circuit for 28 pin device programming. Following EEPROMs are pin compatible with their EPROMs version, ..

Large Dancing Robot Build a large dancing robot. This was supposed to be a walking robot, but it more kinda beebopped around. video on last step. Build a P....

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I usually use an NPN Bipolar transistor to do the relay switching, mainly because my relays are 12v coil rated, but it also keeps everything nice and seperated. and yes i add a diode. with no problem. ( do I or did I need to drive it with a transistor ) but....

Many application requires large number of keys connected to a computing system. Example includes a PC keyboard, Cell Phone keypad and Calculators. If we connect a single key to MCU, we just connect it directly to i/o line. But we cannot connect, say 10 or....

Currently using the PIC24FJ128GA010 and I am planning to use Input/Output port to connect my 4. 2 V LiPo battery and to check if the voltage value doesn`t go below 3. 7 V. You should avoid digital. You have two options, use an ADC or use an Analog....

Here is another little circuit I designed for radiation logging purposes. It is based on an Atmel 168 Microcontroller and a small and precise RTC device called RV3029. I also used an AT45DB41 Dataflash for this Circuit, as I had the sourcecode for....

The microcontroller board is shown (top left/green board) along with the auxiliary board (bottom left / brown board) and the two geared Hurst stepper motors. In this view of the microcontroller board the programming jumper is in the upper right area. Power....

This project was used to introduce a friend of mine to microcontrollers and circuits. I wanted something that used a variety of microcontroller functionalities and used only parts that I had lying around. I ended up using a PS2 numpad as the key entry....

This clock timer uses a PIC16F628 microcontroller to display 3 and 1/2 digit time and control an external load. It can be programmed to time from 1 to 59 minutes. The clock includes a calendar with leap year and optional daylight savings adjustments. The....

A development board for practicing 8051 microcontrollers. The development board is simple one containing minimum hardware required for a 8051 chip to function. The 8051 chip used in this development board is 89S52. The AT89S52 comes in a 40 pin PDIP package.....

1. Spectrum-analyzer project 2007 update Since the development of the wide-band VCO almost 10 years ago, the whole spectrum-analyzer project with all relat....

Designing a simple and yet functional Line Follower Robot (LFR) is always a fascinating and challenging subject to be learned, the LFR actually could be implemented in many ways start from a simple two transistors to a sophisticated PID (Proportional,....

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This is not new Idea of interfacing LCD using two wires, but it can help in many situations when there is not enough of microcontroller pins. This example is based onHitachi 44780 Alphanumerical LCD. This circuit I provide is only to represent an idea but I....

The following instructions will allow you to build a practical test tool for troubleshooting and analyzing digital and microcontroller circuits. The complete Assembly and Instruction Manual can be downloaded from the the following web link: Don`s Projects....

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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....

This is a control of servo motors in software programming using PIC 16C71 microcontroller. The input signals are between 0 - 5V delivered by ...

The WS2512-TR1G, a Wide-band Code Division Multiple Access (WCDMA) Power Amplifier (PA), is a fully matched 10-pin surface mount module developed for WCDMA handset applications. This power Amplifier Module operates in the 1920-1980 MHz bandwidth. The WS2512-....

This simple circuit can be used to activate whatever you like, for example, by connecting it to microcontroller, relays, secret alarms, robot applications or just turn on LED1 which lights up as long as you touch the metal plate. The circuit consists of....

Although there are significant variations between different implementations of the general-purpose timer in different microcontrollers, there are many similarities in the principles of operation and the structure of the timer subsystem. The central element....

Although our kit utilizes an off-the-shelf microcontroller (AtMega328P-PU based Arduino), we additionally designed a simplified version. This allows other collaborators and students to potentially replicate, or modify the project and eventually fabricate....

A few old N64 controllers lying around and figured that it would be pretty cool to use them to control other things. In this article I will describe in detail every step I took to achieve this. I`ve used a PIC microcontroller, but it should not be too hard....

There are numerous posts on Instructables about how to make a flickering LED candle. This is my version. The project requires the following components...

This article focuses on a minimal resource microcontroller implementation for a 3 phase BLDC motor, closed loop speed motor controller application based on a Microchip PIC12 device. It shows how minimisation techniques can reduce the number of I/O pins to....

This application note describes a controller for a 200 W, 24 V Brushless DC (BLDC) motor used to power an electric bike. The design uses Zilog`s Z8 Encore! MC Z8FMC16100 Microcontroller unit (MCU) and associated circuitry to implement motoring control,....

A PB-12N23PW-05Q buzzer and I`m trying to use it with ATmega 162. I can`t connect it directly to pin, because from what I`ve read from 162`s datasheet, it can source at most 20 mA. The buzzer takes 50 (or around 25, if we take a look at the graph), so I....