Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [microcontroller]

A device which includes a central processing unit (CPU), memory, and (generally) an assortment of I/O peripherals (UART, ADC, DAC, general-purpose I/O, I2C, etc.) in a tightly-coupled standalone package.

22
votes
13answers
28k views

Intel HEX (.hex) viewer/readers

Lately I've been doing a lot of work with Intel HEX files. I want a program that can import an Intel HEX file and allow me to view the byte contents at each address. There are a handful of programs I'...
8
votes
5answers
1k views

What are some of the more compelling use cases for plug computers? [closed]

Are plug computers useful for anything besides network-attached storage? I know that you can hang a bunch of drives off them, maybe set up your own web server. But those uses have limited ...
7
votes
2answers
2k views

What MCU, need hi res ADCs?

I'm trying to find a powerful MCU that has multiple analogue to digital converters. I want around a 14 bit resolution to do some serious audio sampling. Any suggestions or comments would be great, ...
6
votes
8answers
2k views

eZ430-Chronos Development on *nix?

So I just got my TI eZ430-Chronos Dev kit (a runners watch & eZ430 micro dev combined), and I am chomping at the bit to start playing around with my new toy. I have just a few issues the ...
7
votes
1answer
496 views

Interfacing with Nichrome heater

I'm using Nichrome wire for a heating application and just using some scavenged parts from a slow cooker. What would be the easiest way to turn on/off the Nichrome? I'm thinking of just having a ...
4
votes
4answers
1k views

SIM card for SMS messaging application. Just pay per text (SMS) rather than monthly fee? [closed]

I"m working on an app that uses text messaging (SMS) in an embedded application and I'd like to source a SIM card where I just pay per text (dont really care about the rates) but I refuse to pay a ...
4
votes
3answers
256 views

Electronics used for cooking

I have a project where I want to be able to cook food (very similar to a crock pot). What would anybody here recommend to use to convert AC to useable DC and what should I use to heat the food? ...
40
votes
18answers
13k views

What are good microcontrollers available today? [closed]

I have experience with assembly and C programming for microcontrollers, but I'm not familiar with the various MCU and DSP families offered by today's companies. (eg: Texas Instruments, Atmel, Renesas) ...
5
votes
4answers
436 views

What is Arduino?

What is this Arduino concept that I keep hearing about? Is it a microcontroller family, or a demoboard? Please include pictures in your answer, and if there are multiple possible items known as ...
11
votes
4answers
4k views

Best PIC programmer?

I would like to start using PICs in my projects and was wondering which programmer I should get. I have plenty of experience using micro-controllers (68k, avr), I also have lots of experience with ...
180
votes
13answers
238k views

What's the difference between a microcontroller and a microprocessor?

What's the difference between a microcontroller and a microprocessor?
92
votes
5answers
8k views

Can microcontrollers be run at arbitrarily low clock frequencies?

The datasheet for the ATTiny13A, for instance, lists Min frequency of 0 MHz. Does this mean the clock can be run at any arbitrarily low frequency with no ill effects? I'm assuming it draws lower ...
6
votes
2answers
1k views

Op-Amp Slew Rate Requirements

After looking over this question and the answers received, it prompted me to wonder: Given pulse signals generated by a uC, what kind of slew rate on an op-amp will you need to reproduce the waveform ...
55
votes
9answers
5k views

RTOS for Embedded Systems

I have seen many articles that tell me I should be using RTOS for time management and resource management. My time has not permitted my own research, so I come to chiphacker for advice. I use low ...
-1
votes
2answers
375 views

Reading a LPC2378 microcontroller [closed]

I can't get data off my ARM LPC2378 microcontroller - does it need UART or can any GPIO be used?
24
votes
13answers
6k views

Level of a water tank with a microcontroller

How do i measure the level of a water tank with a microcontroller?
4
votes
2answers
508 views

COP8 MCU information needed

I have a problem with a sbc that I am repairing, the sbc is controlled by an 8-bit OTP microcontroller which I think is broken. I only get 200 ohms between pin Vcc and Vss, specifically the chip is ...
24
votes
7answers
3k views

Good book for non-beginner firmware development

I do a lot of firmware work at my job, but I'm looking for more advanced books on the topic. Things not like the basics of "what is an interrupt". I'm reading the O'Reilly book on embedded systems ...
4
votes
1answer
559 views

Hacking/Controlling BLDC from CD-burner

I have an old CD-burner (HP 9100 plus) where I would like to control the BLDC motor from. My idea is to use the original IC of the burner as the driver and use an ATtiny13 for controlling it. There ...
5
votes
2answers
1k views

Programmable current source

I need to build a programmable current source from a 8051 microcontroller. It needs an output current from 0 to 10mA maximun. How do i go about doing this? what circuits do i need to build? I was ...
17
votes
17answers
2k views

What do you wish you had known before you started with Microcontrollers?

When working with AVR microcontrollers or Arduinos, what is something that if you had known sooner would have saved you a lot of time or frustration?
14
votes
6answers
3k views

Starting out PIC Programming

I've been looking into doing some PIC Programming, but unlike some of the other microcontrollers available the sheer number of different chips available has caused me some confusion. It also appears ...
11
votes
7answers
2k views

Is Parallax Propeller a good product? [closed]

How does the Parallax Propeller stack up against other multi core solutions? I just saw an article about the open stomp project that won their design contest. I wanted to see what other people ...
49
votes
5answers
39k views

Programming microcontrollers: JTAG, SPI, USB oh my!?

I've noticed, with regards to microcontrollers, there are several way to program them. I am sorta familiar with USB as my Arduino's can be programmed via USB. What is a JTAG or SPI interface? ...
4
votes
2answers
303 views

Crystal radio as user interface problem

If I built a coil like the one in this crystal set. How could I use a micro to detect which point the alligator clip is on? Basically I want to use the crystal set as a user interface for an audio ...
8
votes
7answers
15k views

Encryption Library for Arduino

I am using an Arduino to read a keypad and open an electric strike upon keypad PIN entry. For this sketch I wanted to use some sort of lightweight encryption to store the PINs in EEProm. Does anyone ...
6
votes
1answer
2k views

ATTiny2313 ISR stack usage

I'm using an ATTiny2313 to act as a serial concentrator. It only has 128bytes of RAM. I think I'm running out of RAM during the ISR. My question is how much RAM (stack) does an ISR use to save the ...
47
votes
20answers
75k views

What is a good microcontroller for Ethernet applications?

What is a good microcontroller for doing Ethernet applications? Or do I just need a good Ethernet library to connect with an Ethernet MAC/PHY?
4
votes
3answers
956 views

Using a RealTek Ethernet Switch

I'm starting a project using the Realtek RTL8305SC ethernet switch. Does anybody have a good idea of how to use it, some code for it, or even a flow diagram of how it should be used in conjunction ...
29
votes
11answers
16k views

I'd like to learn how to make my own USB gadgets

I've been writing Linux character device drivers for other people's stuff for some time. I'd like to find a new hobby and the thought of making my own USB gizmos seems really neat. I would be ...
6
votes
4answers
666 views

Turning the TV-B-Gone into a universal remote

Ok, so I don't really want to turn the TV-B-Gone into a universal remote, specifically, but I would like to know/learn how I could go about creating a universal remote (I merely thought that working ...
9
votes
3answers
3k views

How do I detect the pattern of the knock on a door, and use it as a signature to unlock a door?

How do I detect the pattern of the knock on a door, and use it as a signature to unlock a door?
22
votes
3answers
10k views

Low Battery Indicator

I'm looking to make a battery life indicator that I can use in conjunction with a micro-controller. I'm hoping that I can then read the current battery life remaining and increasingly put the micro-...
19
votes
5answers
12k views

PIC Microcontroller Programming on Mac OS X

How can I start PIC Microcontroller Programming on Mac OS X. Can I use an Arduino connected to my Mac has a programmer? Or do I need to buy specific programmer board and serial adapters?
33
votes
15answers
1k views

What microprocessor for experimentation?

I harbor a secret fantasy (oops, not so secret anymore) to build a simple computer from scratch. I'm looking for an easy-to-use microprocessor to start with. I know about the usual suspects such as ...