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.
1
vote
1answer
26 views
Storing data on AT24C02 EEPROM chips with arduino
I have recently come across some 8-pin 128-byte EEPROM chips. I've seen those usb eeprom chip programmer units, but I was wondering if there is any way I could manually store data on the chip with my ...
-1
votes
0answers
13 views
how to make no strings in DHT library
I want to get rid of the string part of the DHT reading. I normaly get
Tempature: 20.00
Humidity: 89.56
The code:
include "DHT.h"
define DHTPIN 2
define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
...
0
votes
1answer
16 views
Qduino Mini bricked?
So I have been experimenting with keyboard inputs and I think I may have accidentally put a loop in my code that never actually ends the keyboard input thus not allowing me to upload any sketches to ...
1
vote
1answer
37 views
How can I switch a 1.5V buzzer with my Arduino?
I want to make my alarm clock “smart”. I'm very new to this stuff, that is, the hardware side. The programming shouldn't present too many problems.
I’m currently experimenting with a simulator (http:/...
0
votes
0answers
53 views
How can I verify that my ESP8266 is working?
As I have not the FTDI interface to communicate the ESP module to the computer, I did it through an Arduino Micro board. I've read a lot of forums where people have success in working with this ...
0
votes
0answers
16 views
What off-the shelf components could be used to recreate “Pinoccio” wireless controllers
The reason for this question is just to try to understand how the Arduino components go together, on a generic level.
I noticed that CrowdSupply sells this Pinoccio microcontroller in two variants:
...
1
vote
3answers
50 views
How to detect pinout at run-time
Is it possible to query the pin-out and each pin's attributes at run-time with Arduino?
If not, can it be done at compile-time?
Finally, if not, how can I incorporate this kind of information into ...
0
votes
1answer
31 views
Detecting I2C transfer with LED
I am going to do a project with a lot of Arduinos connected via I2C, where like of them can became master for a moment to announce an event. So I would like to see how much is the bus used. As there ...
0
votes
0answers
58 views
Safe way to setup I/O to read switch AND manipulate LEDs at the same time
I would like make educational shield for playing with Arduino, where (at least couple of) pins would be connected to grounded switches (so could be configured as INPUT, or INPUT_PULLUP a digitalRead() ...
-1
votes
1answer
47 views
Looking for a distance sensor that works through plastic (i.e. car bumpers) [closed]
I'm noticing a few companies are making parking sensors that go behind your bumper, and I'd like to know what sensor they're using for that?
Which sensor can be used for this purpose and are they ...
5
votes
1answer
94 views
Difference in Arduino pin distance
I have an Arduino Uno rev 3. Today i tried to mount a breadboard as a shield for my Arduino on top of it. I plugged in the pin headers i bought and was surprised that the breadboard won't fit. As you ...
2
votes
0answers
48 views
What USB to UART chip provides highest data rates with Arduino boards?
Checking out online stores for a USB/TTL adapter, I came across a wide range of products, and I'm having a hard time selecting the one which would achieve the highest data rate. I was comparing ...
3
votes
3answers
50 views
Can a motherboard be a simple circuit between arduino uno and a set of devices (ie: motors)
Reason for question:
My son is working on a project to build a robot controlled by an arduino uno. This question is more about terminology than process, but since terms are very important at this ...
-2
votes
2answers
59 views
Do I use an Arduino or an ARM based Launchpad board for my commercial project? [closed]
I want to use a board for an Industrial Project, which is based on temperature sensing, sharing and data storage.
Which board do I use?
Will it be reliable for a long span of time?
Will it be ...
1
vote
2answers
95 views
Why is my arduino acting like a radio? And is there a way to abuse this?
I am playing around with an arduino and a cheap SDR dongle and I just noticed something strange!
When I play a tune on pin 13 with just a random piece of wire connected to the pin (Using the Melody ...
0
votes
1answer
36 views
Pointer to Hardware Differences Documentation For Arduino Boards?
I hope this question isn't overly broad although it is more of a search for consolidated information.
BACKGROUND:
I am new to the Arduino universe and am drawn in by the open hardware concept. ...
0
votes
1answer
63 views
Arduino motor shield
I'm making a soccer car with arduino. And I have this undocumented motor control shield. So I don't know how to program it. I've tried to code it as if it be an H bridge, but is not working. Someone ...
0
votes
2answers
59 views
Making three led's blink at different times in Arduino
I have a breadboard connected to an Arduino Uno, 220k resistors connected to an led, of course it has a common ground and a pin connected to 5v. All pins are digital.
Now, I want led 1 to turn on ...
0
votes
0answers
26 views
Is this compatible: Arduino Zero + Arduino WIFI101 shield + Adafruit Music Maker shield
QUESTION:
Can an Arduino Zero with Wifi 101 shield, and with Music Maker shield all be connected together ?
PROJECT:
I want to have the Zero use the 101 to receiver an MP3 stream by WiFi, and send ...
1
vote
0answers
150 views
How to attach Arduino MKR1000 to a shield meant for Arduino UNO?
I have an Arduino MKR1000 and need to interface it to an Adafruit Music Maker shield, which has pinouts for an Arduino UNO.
Maybe I'll have to attach female headers, and then jumper pins over.
Which ...
1
vote
1answer
35 views
Thunderstorm triggering button press?
So I recently built a small IFTT powered button using an ESP8266 for my boys to play with. Tonight during an intense Thunderstorm, I kept getting alerts that it had been pressed. They weren't in the ...
2
votes
2answers
223 views
Do I need to supply the 12V connection to an HDD
I'm working on trying to control a hard drive with an Arduino Uno, but I'm having trouble with the power supply. From what I know, both the Molex Mate-n-Lok and the new SATA connectors both have 2 ...
1
vote
1answer
60 views
Arduino Due ( Atmel Microcontroller) IC Heat up and led goes off
I was connecting L293d Motor Driver IC with an Arduino Due Board. May be due to wrong connections, but when I made the grounds common, the Arduino LED goes off and Atmel IC heats up. When I reconnect ...
-1
votes
1answer
55 views
Is Adafruit Arduino Feather M0 WiFi compatible with Adafruit Music Maker shield?
I want Arduino to receive MP3 by WiFi (from iPhone), and then send to Music Maker codec and amplifier.
I want to use Arduino IDE and library software from Adafruit for the Music Maker, so I need an ...
0
votes
1answer
100 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
1answer
30 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
98 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
2answers
107 views
What are the Ramps pins on my Arduino mega?
I've been working on a 3D printer and I've come to the last step, which is wiring it all up.
The 3D printer I'm making works ONLY with the Arduino Mega. No Ramps. If I need to get Ramps later, I will,...
0
votes
1answer
28 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
179 views
Is it ok to power a Wemos D1 R2 placed outside with a smartphone charger? [closed]
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
51 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
51 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 ...
1
vote
0answers
41 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
50 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
169 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
56 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
62 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
30 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
40 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
28 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
67 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 ...
0
votes
1answer
214 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
78 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
65 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
101 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
99 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
101 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
117 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
2answers
239 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
1k 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 ...
