The Arduino Nano is a small board based on the ATmega328 or 168. It has male headers, so it can be plugged directly into a breadboard. It is small and compact, and features a USB chip.
0
votes
0answers
4 views
Did I fried my ESP8266 module, or was it something wrong with it?
I was trying to connect my Arduino Nano to my home wifi. To do that, I connected my Arduino to ESP8266 module.
I connected pins
Arduino | ESP8266
3.3V | VCC
3.3V | CH_PD
D10 | RXD
D11 ...
1
vote
1answer
28 views
Physical dimensions(size) of the new MKR1000 board?
Anybody here knows the physical dimensions(size) of the new Aduino MKR1000 board?
0
votes
2answers
48 views
Arduino Nano no output on any controllable pins except for RX and TX pins
I have 2 Arduino Nanos which don't output anything on any controllable pins except for RX and TX pins. I used an LED which I have tested works on the 3.3v/GND and 5.0v/GND. When I try to control the ...
0
votes
2answers
48 views
How to upload a sketch via Arduino Nano
I have two Nano boards, but the first one seems the CH340 chipset was burn. :( ,
Nano v3, CH340 chipset but unable to identify after connect to my Mac using USB
Nano v3, FTDI chipset and in good ...
1
vote
2answers
32 views
Cannot disable interrupts
I am new to arduino.
Why does this not work the way it's supposed to?
Shouldn't it block all interrupts for 3secs after it received one from digi pin 2?
How would I accomplish this:
Running a method ...
-1
votes
1answer
44 views
Control brightness of 20 watt street LED light using Arduino
I have searched google and I now know that if we change the resistance, we can change the brightness of an LED, but I was wondering how to change resistance by using a micro controller.
0
votes
1answer
35 views
Can I power a 9g servo from an arduino nano with USB power only?
I want to run a 9g servo off of the pins from an arduino nano board, using only the 5v USB connection.
The servo specifically is a SG90, which I have measured a stall current of ~250mA - I don't ...
1
vote
1answer
47 views
Can Android phone can be used instead of( or with) Arduino as controller?
I am Android application developer and I want to modify regular toy RC car which can be controlled by Android phone. I want to use 2 Android phones: 1 as remote controller, 1 as controller in RC car. ...
0
votes
3answers
63 views
Arduino Nano, ICSP header and 595 Shift register
I'm trying to control a 4-digit 7 segment display with an Arduino Nano, but I'm getting something wrong. I'm using the ICSP header to interface with a 74HC595 Shift Register which is then connected to ...
5
votes
1answer
76 views
Precision voltmeter using Arduino
I am newbie, I need to measure precise voltage in range 0.00-0.80V, two digits precision.
The voltage will not be greater than 1V-1.2V.
I wonder if I need divider or not, I am sure that voltage ...
0
votes
2answers
31 views
Porting my project to multiple Nanos
I'm still fairly new to the Arduino world. I got myself a kit with a clone board couple of months ago and have successfully prototyped the project and got it to the state I want it to be. I now want ...
0
votes
1answer
60 views
ESP8266 cannot read DHT22
I am trying to build a WiFi humidity and temperature sensor. My board is a nodeMCU using the ESP8266 connected via USB. The board is working fine with various WiFi examples and various serial ...
0
votes
0answers
45 views
Cannot Upload to Arduino Nano (\\.\COM1": Access is denied.)
I cannot upload a sketch to an Arduino Nano from the Arduino IDE, my operating system is Win 7. When I try to upload, it gives me this error:
"avrdude: ser_open(): can't open device "\.\COM1": ...
0
votes
1answer
56 views
HC-05 Bluetooth - Disable PINCODE / connect to a device that doesn't have PINCODE
I need to connect a Bluetooth remote control to an Arduino. On the Arduino side I have a HC-05 Bluetooth module, which is running in Master Mode.
C2C:26:ED7B6E is the MAC Address of the remote.
...
0
votes
2answers
79 views
HC-05 Bluetooth Module - INQ-Command doesn't work
For a project I need to connect a Bluetooth Remote control with an Arduino Nano.
The Problem
I am trying to setup a connection to said Bluetooth remote Control. This device is visible! (I have ...
3
votes
2answers
78 views
Watchdog approach
I'm developing up a project that is designed to run 24/7 (an energy monitor) logging via wifi.
Due to a variety of considerations I've ended up with a design that links an Arduino Nano with an ...
1
vote
1answer
62 views
Connect Bluetooth remote control with Arduino
For a project I need to connect a Bluetooth Remote control with an Arduino Nano.
On the Arduino-side I have an HC-05-Bluetooth module. With the Android Application "Bluetooth Terminal" I can verify ...
1
vote
1answer
41 views
Using an Arduino as the processor for a computer-mouse-like speed detector
I'm looking at making a pretty cheap and easy odometer, eventually for an electric car or similar vehicle.
My idea is to implement a big computer mouse, and track the speed with that: a computer ...
3
votes
1answer
41 views
Module and library for self healing large sensor network
I have to build a wireless sensor network with arduinos on my project. It does not need to be a mesh network, but it needs to have self healing capabilities.
I would like to use something cheaper ...
1
vote
1answer
52 views
C Serial Communication Code is unreliable
This going to be a difficult to debug problem but I hope some ppl here have C knowledge and idea what's going on. Given an arduino nano which is controlled by a C program from WRT54G.
Here is the ...
0
votes
2answers
38 views
detecting presence inside - PIR or ultrasound?
(I am professionally a software guy working in the GCC compiler with MELT, so I am fluent in software, but much less in hardware - I did use a solder for a 74LS00 nand gate based stuff in the 1990s. ...
0
votes
2answers
117 views
Problem with serial driver for CH340G board
I bought a USB Nano V3.0 ATmega328 16M 5V Micro-controller CH340G board For Arduino and tried it with Arduino 1.6.6 on my MacBook Pro running OS X 10.11.1
The USB serial could not be seen. I searched ...
3
votes
1answer
59 views
Arduino Nano gives 7V on the 5V PIN!
I have an Arduino Nano which is Powered by an external Power supply. This is connected with VIN and GND. The voltmeter says, there are 12,12 V
I have some components connected on the 5V PIN, which ...
0
votes
1answer
40 views
Issue with Serial PINs (RX/TX) on Arduino
I have an issue with an Arduino Nano.
I want to communicate with it through the Serial-Port. Meaning I want to send and receive Serial commands. With USB and the "Serial Monitor" this works nice.
Now ...
0
votes
0answers
25 views
Arduino EEPROM lifespan [duplicate]
I have a Sharp distance sensor connected to my Arduino Nano. Whenever the sensor measures a certain threshold (e.g. 100 cm), it should increase a counter and save it.
Also it should be able to show ...
0
votes
1answer
62 views
Arduino Nano Atmega328P doesn't work on Macbook
I've bought and Arduino Nano compatible on eBay:
But by the time I connect it to my Macbook Pro (OS X El Capitan 10.11.2) doesn't appear under "Tools -> Port" in Arduino IDE:
I've followed some ...
0
votes
1answer
22 views
Negative voltage output Or Controling negative voltage
I've got an RGB led strip I'm trying to control. It's a 12v, 4 pin strip.
Pin layout seems rather odd to me as 1 pin takes 12v of power and 3 pins (that go to ground) control the colors. In other ...
0
votes
2answers
62 views
Arduino countdown timer for repeating actions
I have tried to find simple library for triggering timer after some time.
The idea is to retry network connection (RF24 network library).
I have following code now
while(!mesh.write(message, ...
0
votes
1answer
50 views
Rotating a motor with L293D
I'm following this tutorial to control a DC motor with an Arduino.
I have the same problem as this stackexchange post arduino.stackexchange.com/questions/10049/problems-with-l293d where the motor is ...
0
votes
1answer
54 views
Blink question with breadboard & LED
I tried a basic Blink example and I found a strange case where :
Works
Does not work
Can someone explain me what is happening ?
3
votes
2answers
64 views
Arduino power sources
Is it safe to connect a USB input to an Arduino (Nano) at the same time as an external regulated 5V supply to its 5V pin is connected, assuming the supplies have common grounds ? Will (I hope) the ...
1
vote
1answer
55 views
Arduino Nano - programmer is not responding
I cannot seem to upload the simple blink program to my Arduino Nano. I keep getting the message:
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in ...
0
votes
1answer
28 views
Convert INT to Array of Strings
My sensor outputs an int. I would like this to be an array of strings so I can send it with my 433MHz transmitter.
Converting an int to a string to an array of strings seems to be extremely ...
3
votes
1answer
157 views
Why are Arduino clones cheap?
You can buy Arduino Nano v3 clones from Alibaba at the cost of roughly $2-$3.
I have calculated the cost for fabricating and all the parts in the BOM for Arduino Nano V3, and it ended up costing ...
1
vote
2answers
165 views
433MHz sending not receiving
I'm trying to send data using these cheap parts.
When I check the voltage on the data port of the transmitter, I see what I expect, 1.2 and 0.6 fluctuating while sending.
But when I check the ...
1
vote
1answer
40 views
How to connect MCP4141 digipot and a data logger shield to the same Arduino board
The main problem here is that they both need to communicate via the Arduino's SPI bus, and I know that each of the two devices will need its own CS pin (The data logger is hard wired to 10, so the ...
1
vote
2answers
65 views
Counting minutes in arduino
I have a dipswitch of 4 steps to get a binary number that will turn out to decimal from 0 to 15, So I need to get that number and make it the ammount of minutes to make something and also be aware of ...
1
vote
2answers
2k views
Arduino Nano v3.0 with ESP8266
I am attempting to connect and use an ESP8266 board with my Arduino nano v3.0 and I am not have much luck.
I have read a bunch of tutorials and articles, the most recent is ...
0
votes
1answer
133 views
Getting a binary string and convert it to decimal
I have a 4 dipswitch to get a 1 or a 0, try to get that into a string and from that get a decimal, therefor if I get for example a 0011 a 3.
so, I know that from the variations of 0000 to 1111 is a ...
1
vote
1answer
25 views
Computer to multiple arduino bluetooth modules
Im going to take part in a competition called IEEE Very Small Soccer and I need to set up a communication between my computer, that will run visual and strategy algorithms, and send some commands to 3 ...
1
vote
7answers
501 views
Using / calibrating pH sensor module
I've bought this sensor module board to link to an Arduino nano: http://www.ebay.com/itm/For-Arduino-Liquid-PH-Value-Detection-detect-Sensor-Module-Monitoring-Controller/321764233326
I assumed the ...
0
votes
1answer
67 views
Ultrasonic sensor returns random values on external power supply
my Problem is, that I get random values from my ultra sonic sensor if my arduino is connected to any external power supply (vin port 30) on my arduino nano.
If I power up from the laptop usb port, I ...
1
vote
1answer
112 views
What could make an LCD stop working permanently after being connected for 5 seconds to Arduino?
I was using a 20x4 LCD connected to Arduino Uno via a common I2C adapter board. Everything was working perfectly, including the LCD. I had it running like this for a couple of days without any ...
0
votes
1answer
128 views
Parallel servo control?
I have an Arduino Nano & am success fully controlling 4 servos from it but it then occurred to me that I am controlling these in a serial manner, ie I set 1 position then the next then the ...
1
vote
1answer
137 views
Using an Arduino Nano, how many LEDs can I safely power?
I am working on building a wordclock using one of the several design ideas that you can find all over the Internet. Something like a mix of this one: http://www.instructables.com/id/Sleek-word-clock/ ...
0
votes
1answer
31 views
how much current does Arduino Nano draw when only using 8 digital pins?
I want to connect an Arduino Nano to an Intel Minnowboard Max (it's like a Raspberry Pi). I know Arduino can draw up to 500 mA current through the USB connection. Since I already need the USB to ...
0
votes
1answer
64 views
SoftwareSerial returns garbage when powered externally
Hello I'm currently working on a project with the esp8266 and arduino nano, and when I power the device via usb they talk to each other via SoftwareSerial just fine. I use the ardiuno IDE serial ...
0
votes
1answer
71 views
Is the Serial buffer going from Arduino to PC and from PC to Arduino different?
I'm both sending and receiving strings to Arduino from my Python program on the PC and the opposite. I don't check by code if one is finished before doing the other. Are they seprate buffers, or is it ...
0
votes
1answer
56 views
make Arduino tell when the Python program stops reading from the Serial (crash, etc)
Here's the Arduino code:
void setup() {
Serial.begin(9600);
pinMode(7, INPUT_PULLUP);
}
void loop() {
int val = digitalRead(7);
if (val == HIGH) {
Serial.print("1");
} else ...
0
votes
0answers
125 views
Using Arduino and SIM900 to post data via HTTP
I have an Arduino and bought a SIM900 module.
I looked at the tutorial at the Arduino website and I worked out the following code:
#include <GSM.h>
#include <VirtualWire.h>
#define ...
