The physical circuitry and other components of a machine or device. This is distinct from the program code running on a device, which may be called software or firmware.
-3
votes
0answers
64 views
Which Arduino is the best for my project
I switch my hardware from Raspberry to an Arduino i want make a man-in-the-middle for a 9-bit bus protocol with 4800 baud.
Because i want see on my laptop when a framing error happens and so on. My ...
0
votes
1answer
21 views
Arduino + Wifi 101 Gerber Files
Is it possible to get the Gerber files for the Arduino Uno r3 and the WiFi 101? I've been teaching myself the SW side of this hobby (with much help from SE Arduino) and I'd like to better understand, ...
1
vote
1answer
36 views
It seems as if there is a 220K pull-down resistor on analog pin 0
So I am building a project that uses the analog pins for precise measurements of resistance through a voltage divider and I have been having some seemingly unsolvable problems with nonlinear response ...
1
vote
0answers
23 views
Easy way to connect and control 3 servos
I need to connect and control three Parallax Standard Servos to an Arduino board, and apart from the USB connection, nothing else will be connected to the board. My predecessor used a setup of and ...
1
vote
0answers
22 views
how to differentiate in code between Sangunio and Microduino core+
Sanguino and Microduino core+ both uses ATMEGA644PA . I need to write a piece of code in my library where I need to check what board has been selected
#elif defined(__AVR_ATmega1280__) || ...
0
votes
1answer
22 views
Assembled redboard PTH kit, when I turn it on the led flashes increasingly fast and stops
I assembled the following sparkfun redboard: https://www.sparkfun.com/products/retired/10776
When I plug the board in it start to blink but increasingly fast until the LED stops.
I'm very new to ...
1
vote
5answers
58 views
Arduino fried? Onboard blink ok; offboard blink not ok
EDIT :
I have plenty of weird bugs. I will open another thread, and come back to this one when I have better understanding, rather than completely modify this one halway through. Sorry to every ...
1
vote
1answer
79 views
Designing a robotic arm using Arduino Uno
We are making a robotic arm using Arduino Uno board in which we are not able to decide which kind of motor to use.
Which motor will be better if we want to lift weight up to 1kg using gripper at the ...
0
votes
1answer
42 views
Arduino Mimicking Voltage Dividing Keypad / Matrix
Still very new to Arduino, so bare with me. I've been all over Google looking for ways to hack my alarm keypad. This is my first time using the Arduino to hack something :smiley-confuse:
The keypad ...
1
vote
1answer
27 views
Possible to use the hardware serial port for peripheral on ATmega32u4 when using USB for programming?
I have a Arduino Pro Micro and use the USB port for programming. Is it possible to use the hardware serial port for connecting with a peripheral while I'm using the USB port (and hence the hardware ...
5
votes
4answers
88 views
Breadboard for kids
I am interested in teaching young kids how to build arduino projects. I was thinking that using a breadboard may be difficult for them, as the holes are all very close together. It is easy to put the ...
0
votes
2answers
83 views
Can we detect a magnet using Arduino? If so how? [closed]
If so, please tell me and also tell me if any interfacing of other microcontroller needed?
2
votes
2answers
49 views
ATMega328P-PU not working
I bought some material on the net to start working with Arduino. I didn't want to buy an Arduino, since it costs a bit too much IMHO, so I bought an ATMega328P-PU, and made an Arduino on a breadboard. ...
1
vote
1answer
95 views
Arduino Hardware Issue
I have two Arduino Uno R3 boards and both of them now seem to have an issue. There's a micro sized 8 Pin chip near the dc power port. This seems to get incredibly hot (i managed to get a blister from ...
1
vote
1answer
101 views
Setup J-K Flip-flop for logging on Arduino RESET
There are two events I plan to log; using no switches or requiring manual input of some kind. One of the events is whenever the Arduino Serial Monitor is opened; the other, is when external event ...
0
votes
1answer
145 views
Arduino sending data over MAX485
To introduce myself as I'm new to this forum, I'm student from Czech and currently I'm working on a meteostation project.
I've got Arduino set up, with plenty of weather sensors, as well as WH1080 ...
1
vote
0answers
29 views
How to test Arduino behaviour on Windows? [duplicate]
Hello fellow Arduino enthusiasts,
I created an Arduino project for a Mega2560 board in Microsoft Visual Studio.
Before loading the code on the board I want to test it on my Windows desktop computer.
...
1
vote
1answer
29 views
Analogue input 0 staying at 0 when sensing light with Arduino and a photocell
I am doing a circuit for capturing light intensities.
I followed the tutorial provided by Adil Moujahid
Yet, when I plug the jumper wires on 5V the circuit stops working and when I plug on 3.3V the ...
0
votes
1answer
60 views
Arduino Uno pin dead for no reason. Why? [closed]
After struggling with an LCD showing rubbish characters on my previous post, I found that my pin 5 was dead, for no reason. I never connected it to anything except the LCD - I bought it two days ago.
...
0
votes
1answer
81 views
How to latch a 200mS LOW pulse?
Trying to latch a 200 mS, LOW event to log the event. LOW only occurs when external Watchdog timer sends reset pulse to the Arduino.
Is a D Latch suitable for this application? It has been years ...
8
votes
1answer
280 views
How does serial communications work on the Arduino?
With reference to the Arduino Uno, Mega2560, Leonardo and similar boards:
How does serial communications work?
How fast is serial?
How do I connect between a sender and receiver?
Please note: This ...
3
votes
1answer
42 views
Due : DMAC BTSIZE trimmed modulo 8192?
On Arduino Due, I set-up DMA transfers using direct control of memory mapped hardware registers.
There is a 16-bit BTSIZE field in CTRLA which indicates the number of (width sized) transfers. If I ...
1
vote
1answer
43 views
Xbee for Arduino Uno
I'm very new to Arduino, and I was wanting to control my Ardunio wirelessly. Some googling shows that there is a shield for Arduino called Xbee that allows wireless communication. Unfortunately, I ...
0
votes
0answers
32 views
Beginning electronics programming [closed]
I have substantial experience programming computers, but never programmed micro controllers or built digital equipment. The closest I ever came was controlling modems by reading & writing ...
7
votes
2answers
330 views
Re-use smartphone/tablets parts like a camera
For learning and hacking purposes, I plan to study and use parts from smartphones and tablets like Galaxy or iPhone. They are really efficient and pretty cheap...
Did anybody do this before? If yes, ...
7
votes
1answer
188 views
A good water flow meter to monitor home usage with Arduino
I'm searching for a good water flow meter to add to my home controller project with Arduino. I have been searching in several pages and I only found some devices that work for low flow. I need to ...
3
votes
3answers
168 views
Sending IR (NEC)-Signals with Arduino
I have an Arduino Micro where I want to control a display with IR commands. So the Arduino should send the IR commands to the display.
I have found a library "Arduino-IRremote", which I am using to ...
0
votes
1answer
27 views
Buying Arduino Parts Different Manufacturers
I'm looking to buy my first arduino kit. However I have a concern.
If my Arduino Mega is bought from one manufacturer, then can I buy shields or other parts from other manufacturers? Are there any ...
0
votes
3answers
121 views
8x8 solenoid matrix
I've been teaching a blind student how to program and build electronics with Arduino. So far I've substituted LED's with piezo buzzers with excellent results. We are getting to the point where more ...
-1
votes
1answer
48 views
Arduino Part Needs Identified
I do not know what part this is. I ordered an Arduino beginners kit and this part was not labeled. Please help!
-1
votes
1answer
121 views
What's Happened with my Arduino?
I am in a First Year Design class, and we are supposed to be making an autonomous robot. After hooking up some wind speed and temperature sensors to calibrate, I plugged in to my laptop (we have 2 ...
1
vote
4answers
80 views
Create a device to detect object state
Here is what I want to do or get it done (since I am not a embedded guy)...
create a prototype with Arduino to detect open window/door of my room using camera(image processing/object state ...
0
votes
1answer
19 views
Gain on a receiver
I'm doing a project on the arduino with simple 433MHz antenna modules. And I was wondering if someone could offer clarifications on how receivers work.
I read that high gain receivers can pick up a ...
0
votes
0answers
39 views
Please! Help with the implementation of Arduino on a clap switch circuit
i am a novate in this topic of Arduino and Electronics, what happens is that i want to implement Arduino on a clap switch. Take a llok to the circuit (without Arduino, off course):
The idea is to ...
1
vote
1answer
78 views
less expensive alternative arduino board to CMUcam4
Is there any similar (less expensive alternative) arduino board to CMUcam4?
CMUcam4:The CMUcam4 is a fully programmable embedded computer vision sensor. The main processor is the Parallax P8X32A ...
0
votes
1answer
332 views
Esp8266 V12 Wiring
I have tried a Google search and cannot find any place that tells me exactly how to wire the version 12 esp8266 ,
How should it be wired for normal operation and for flashing ?
I am designing a diy ...
1
vote
1answer
110 views
Arduino and 127/220 Volts: Relay and Isolation
I am new to Arduino, also, I am not fluent in english.
I wish to create a controller for several circuits. All of those circuits are "in parallel" with additional circuits.
My question is:
Do a ...
1
vote
4answers
98 views
A knob that can be turned by hand, have the position read, and turned by software to another position?
I'd like to be able to change variables on the Arduino by adjusting a set of knobs. When I get to a desirable setting I'd like to be able to save those settings on the Arduino... and then I'd like to ...
0
votes
1answer
45 views
Mega pin stuck high after driving optocoupler
I have an Arduino Mega which is driving a board. On the board is a quad optocoupler (K847PH). Pins 42 - 45 of the Arduino are each attached to the Anode of a opto. The cathode goes to ground through a ...
0
votes
2answers
125 views
Powering arduino and 12V Fan from same supply
I have found a relatively small 12V switching power supply that I want to build into my device, using it to power both the Arduino Pro Mini and a couple of 12V cpu fans.
Am I correct in assuming that ...
0
votes
0answers
176 views
Control linear actuator with ROS and Arduino
I would like to control a linear actuator with ROS the same way ROS can control a servo like this
ros tutorial for 1 servo connected to an arduino. ...
0
votes
1answer
107 views
Connect GPS module accompany with GPS antenna SIM39EA to Arudino Board
I bought GPS module accompany with GPS antenna SIM39EA online.
I have Arduino board, it has 3 ground pin, one Vcc and two input/output pin.
I want to know how can I connect this module to Arduino ...
0
votes
2answers
177 views
Dagu Mini Driver Board Issues
I have the Dagu Mini Driver board which is based on the atmega8 and I uploaded the code here. It uploaded perfectly and I wired 4x AA pack to the battery terminals making sure to observe polarity.
I ...
0
votes
1answer
37 views
atmega16 in Arduino Board
I had a very common question. Why a additional MEGA used in most of the Arduino Boards. Arduino board Mega2560 also have a MEGA16U2 controller on board which i think is used for programming via USB. ...
0
votes
1answer
83 views
Fog Machine - On Command
I work with a marching band, and we want to use fog machines for a particular part of the show. I know how to code/program in Arduino, however I am not great in the electrical and technical end. I own ...
0
votes
1answer
219 views
AnalogWrite custom voltage
I want to get a low voltage on output pin of Arduino mega. I have connected Pin 46 to A3, and wrote 120 value to 46 port. Expected was to get 2-3v on A3 input pin. Instead I always get 1023 values ...
0
votes
1answer
39 views
safety for power electronics
I'm quite new to Arduino. I have build a number of projects successfully, like potentiometers, serial communication, DAC, sensors, motors etc.
I use a laptop to power my Arduino project and Atmel ...
3
votes
1answer
491 views
Can both the 3.3V and 5V pins on the Arduino be used at once for power?
I'm supplying power to Arduino via PC USB.
0
votes
3answers
80 views
Can a Ethernet USB Dongle be instead of ethernet shield for arduino?
Can a Ethernet USB Dongle be instead of Ethernet shield for arduino in order to cut costs?
0
votes
1answer
2k views
avrdude: ser_open(): can't open device “\\.\COM3”?
My computer cannot detect my Arduino Uno anymore,
Reset button- > L led light blinks and it turns on forever
Arduino 1.6.5: Tools->Port (greyed out) I remembered that previously it wasn't like this
...
