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.
0
votes
0answers
2 views
SIM808 Module's D5 LED os not lighting up
I bought a SIM808 GSM module. I followed the instructions. Powered it up with a 12v DC adapter. But whenever I click power on button, only D3 and D4 LEDs are lighting up, but not the D5 LED. I also ...
0
votes
1answer
10 views
SOLVED: Soft Power On SIM900 module - JP pads missing!
I have this SIM900 board and working just fine.
But i can't find a way to soft power on this board from arduino.
I read for JP pads. They need soldering first, but from my board this JP pads missing.
...
0
votes
0answers
10 views
Interfacing with Nintendo Consoles
I am working on a project right now with my trusty Arduino that requires me to emulate a Wii Classic Controller (not Pro). I already have all of the wiring setup as this device is going to be plugged ...
0
votes
1answer
25 views
Water valve for food
I am working on a project, where i need to control the flow of a liquid made from food.
For example: making chicken curry, I will separate all the liquid from the meat, and run that tough a pipe, ...
0
votes
1answer
16 views
pH ORP sensor esp12 esp82666
I need to know if there is a sensor that mesure pH and ORP, I have already googled about this type of sensor but i found only AtlasScientific that commercialise this kind of sensor
thanks
0
votes
1answer
17 views
How to use Aiduino module to connect to computer network?
I have 4 usb Hard Drives and I just want to connect them to computer network directly without a traditional computer. Is there an any module with 4 usb ports and one RJ45 port. The module should able ...
0
votes
1answer
26 views
Is it ok to power a Wemos D1 R2 placed outside with a smartphone charger?
I'm currently playing with a wemos D1 R2 for some simple temperature / humidity logging on my balcony. For the moment the board is powered via its micro-USB entry by a small smartphone charger.
I've ...
0
votes
1answer
47 views
Computer to Arduino to hardware, controlling on / off state of hardware via user input on computer
First time coding for Arduino. I'm working on code to operate an electronic valve switch. We have a laptop connected to an Arduino Mega, and that Arduino is hooked up to the valve (hardware) on Pin 53....
3
votes
1answer
33 views
RC Car Hack Issue
I am trying to hack a cheap RC car as to be able to control it using my Arduino. I took apart the cars remote controller and found the pins that make it go forwards, backwards, left, and right. So I ...
0
votes
0answers
15 views
Minor questions on connecting a Nintendo 2DS to Arduino for control
Background
The Nintendo 2DS is a game system from nintendo that has a series of buttons on the front. Included are the Up, Down, Left, Right, A, B, X, Y, L, R, Start, Select and Home buttons. The ...
1
vote
0answers
38 views
Serial Request error
I am working on arduino Uno board.I am trying to send request Serially from out Side using docklight.I am sending COmmand is request send every 5S to 10S and get response.When i tested this code with ...
0
votes
2answers
42 views
Is it possible to connect 2 ultra sonic sensors to 1 arduino?
I am currently using the Arduino Pro Micro board and I want to connect 2 ultrasonic sensors to 1 board, whilst knowing which sensor is being triggered. The sensor I am using is a HC-SR04 Ultrasonic ...
0
votes
1answer
65 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
2answers
46 views
How to calculate the needed voltage and current to supply for Arduino
I have Arduino MEGA and I'm connecting to it 5 servomotors.
{ 3 TowerPro M995
Basic Information
Modulation: Digital
Torque: 4.8V: 130.5 oz-in (9.40 kg-cm)
6.0V: 152.8 oz-in (11.00 kg-cm)
Speed:...
1
vote
1answer
51 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
25 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
31 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__) || defined(...
-1
votes
1answer
25 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
64 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
125 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
49 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
35 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
91 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
88 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
58 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. ...
2
votes
1answer
109 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
142 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
2answers
353 views
Arduino sending data over MAX485
I would like to introduce myself as a student from Czech Republic. I'm 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
30 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
30 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
63 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
94 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
496 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
53 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
50 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
33 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
773 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
245 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
309 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
30 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
153 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
101 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 detection)...
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
45 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
85 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
398 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
116 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
109 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 ...
