Hi all, Recently I am stuck on my first microcontroller project. I think I have everything nailed down to the absolute last detail, but have...

Hi all, Recently I am stuck on my first microcontroller project. I think I have everything nailed down to the absolute last detail, but have not yet been able to find a solution to this - after about 6 weeks of looking. My 8051 microcontroller is trying to determine the ocean floor depth. To do this, it sends out a ping, enables a timer, and counts how long until the echo is returned. Si...

Hello i was looking at using a atmel 8515 or a pic (not sure which variant yet) for a project. The microcontroller will be connected to a...

Hello i was looking at using a atmel 8515 or a pic (not sure which variant yet) for a project. The microcontroller will be connected to a max186 for analog aquisitions which will be stored in an eeprom, also looking at a keypad ,lcd,x10 and serial pc interface to configure the unit and download data from the eeprom.. one of my concerns on the 8515 is the price @10$ but i can use gcc, i ...

I have a set of sensors and actuators all operating at +5v and draw 10mA to 680mA current. My microcontroller will stwitch these units ON or...

I have a set of sensors and actuators all operating at +5v and draw 10mA to 680mA current. My microcontroller will stwitch these units ON or OFF in various configuration. My microcontroller has enough output port to drive switching circuits. How can I switch these unit ON/OFF without using mechanical relay? What is the electronic equivalent of relay ? (May be FET/MOSFET ? How to driv...

Hi, I need to convert MC68HC705-based firmware to PIC. The original is a 28 pin MOT microcontroller. Is there a company that makes...

Hi, I need to convert MC68HC705-based firmware to PIC. The original is a 28 pin MOT microcontroller. Is there a company that makes MOT-to-MCHP microcontroller converter PC boards, and vice versa? Thanks, Mike

Hello, All! I'm studying 8051 microcontroller now. Please recommend some resources with sample projects, which I could implement with Keil...

Hello, All! I'm studying 8051 microcontroller now. Please recommend some resources with sample projects, which I could implement with Keil compiler and simulator, cause currently I don't have real hardware. Thanks in advance! With best regards, Roman Mashak. E-mail: mrv@tusur.ru

Hi there, I've got a little problem while working on a bootloader for a C164 microcontroller. The microcontroller gets the data over the...

Hi there, I've got a little problem while working on a bootloader for a C164 microcontroller. The microcontroller gets the data over the serial port. I've already implemented some functions that transmit some vmc and hex files to the controller while there is a OS running on it. But now I'd like to transmit my one bootstrap loader and I've got some problems with the serial communication in...

Hi ALL I am Mohd sulaiman, I am working on Position control of the BLDC motor using the microcontroller. I have to implement the...

Hi ALL I am Mohd sulaiman, I am working on Position control of the BLDC motor using the microcontroller. I have to implement the PID controller in Microcontroller through coding. My worry is mainly about the calculation of Kp,KI and KD constants. If you know how to calculate them or have a document which talks about the determination of these parameters. please let me know and how...

Hi, I want to use code banking for my project on 8032 based microcontroller. I am using Keil uvision2. I want to know how efficient is code...

Hi, I want to use code banking for my project on 8032 based microcontroller. I am using Keil uvision2. I want to know how efficient is code banking? I have to implement a tcp/ip stack on the microcontroller. So i cant afford inefficieny.

I know very little about USB, so excuse the naive question. I'm looking for an IC that I can interface with a microcontroller (in my case, the...

I know very little about USB, so excuse the naive question. I'm looking for an IC that I can interface with a microcontroller (in my case, the ATMega32) that will let me communicate with a computer over USB. My project involves large data transfers (for logging purposes) and serial / UART is too slow. Any direction would be helpful. Thanks, -J

A lot of the leading-edge technology for autonomous vehicles is coming from military applications. Actually, the U.S. Navy built what was probably...

A lot of the leading-edge technology for autonomous vehicles is coming from military applications. Actually, the U.S. Navy built what was probably the first drone helicopter back in the 1960's: http://microcontroller.com/news/military_autonomous_vehicles.asp Bill Giovino http://Microcontroller.com

With all these Zigbee-ready transceivers popping up as demo boards offered by our traditional microcontroller companies, it looks nice that a...

With all these Zigbee-ready transceivers popping up as demo boards offered by our traditional microcontroller companies, it looks nice that a designer wouldn't have to spend more than $10-$15 for the zigbee-specific electronics and microcontroller embedded with zigbee. However, is there an extra cost? Do I just solder in the ICs that the Zigbee alliance has blessed, and can now declare my p...

I'm about to embark on a new project that will require a 32-bit microcontroller. I've spent the last month evaluating the merits of the various...

I'm about to embark on a new project that will require a 32-bit microcontroller. I've spent the last month evaluating the merits of the various choices architecturely, and have a pretty good idea of what's out there. It's come down to development environments, and I'd like to get some first-hand reports from people on this group. The three choices on my short-list are: Pic32 and MPLAB ...

Hi everyone, Ive only worked with the Atmel ARM variants, but im curious about knowing your views on which ARM-based microcontroller is the...

Hi everyone, Ive only worked with the Atmel ARM variants, but im curious about knowing your views on which ARM-based microcontroller is the most popular..Plz enlighten me! Regards Mayank

The story so far: I'm trying to reverse engineer a certain much- maligned gaming peripheral from circa 1990. I've already interfaced with it the...

The story so far: I'm trying to reverse engineer a certain much- maligned gaming peripheral from circa 1990. I've already interfaced with it the way microcontroller-God intended and worked out the basic functionality, but I've reached the limits of trial-and-error. There are hidden features that never saw the light of day, embedded deep in the firmware. I can't blackbox them. So I did the onl...

I am a hardware engineer and want to get aquainted with embedded programming by working on a microcontroller development board. I would like to...

I am a hardware engineer and want to get aquainted with embedded programming by working on a microcontroller development board. I would like to buy one for myself to experiment, so are there any sites giving good deals on the dev boards. I would like to have suggestions on what sort of board to go for. I know a bit of C and assembly programming. thanks in advance

Hello All, Some time ago (years actually) I encountered an article named the '25$ webserver'. It was about connecting a microcontroller to...

Hello All, Some time ago (years actually) I encountered an article named the '25$ webserver'. It was about connecting a microcontroller to an NE2000 compatible ISA network card. Just recently I thought it would be a nice project to connect a RTL8019as NIC to an Atmel Mega32 microcontroller and using assembly as the language-of-choice. A further googling found me a site using BasCom,...

Hi Group, We wish to thank you all for the immediate and informative response to our previous topic. We wish to know about programming the...

Hi Group, We wish to thank you all for the immediate and informative response to our previous topic. We wish to know about programming the microcontroller and associated chips this time. These are the chips we have decided to use: AT89C52/AT89S52: MICROCONTROLLER DS1307: RTC MAX232/MAX485: LEVEL CONVERTER AT24C1024: SERIAL EEPROM 4051B: 8:1 ANALOG MUX LM339: COMPARATOR 1. What are th...

Dear all, I am trying to send commands to a max6952 LED driver via SPI with my microcontroller (ATmega8) which has SPI, however I have never...

Dear all, I am trying to send commands to a max6952 LED driver via SPI with my microcontroller (ATmega8) which has SPI, however I have never writtern programing for serial communication, and I don't know were to start. Would anyne be kind enough to guide me the write direction (documentation, website...). I can't find anything on google. Can I use general pins on the microcontroller? Or ...

I'm looking for suggestions for a microcontroller for use in an audio player. This is going to be for a high-end player, not a mass-produced...

I'm looking for suggestions for a microcontroller for use in an audio player. This is going to be for a high-end player, not a mass-produced portable, so I'm not bothered about size or power consumption, nor am I worried about getting the lowest possible cost. It needs to have Ethernet for connecting to the outside world. Some support for wireless networking would be good too, if poss...

A lot of you are familiar with the method of using a shift register to multiplex a matrix of LED's. My college project this year was to make...

A lot of you are familiar with the method of using a shift register to multiplex a matrix of LED's. My college project this year was to make a Connect4 game consisting of a 7x6 matrix of LED's. I had two choices for implementing the display: 1) Use two pins from the microcontroller 2) Use one pin from the microcontroller The technique of using two pins would be something like ...