A small microcontroller board based on the ATmega168 or ATmega328 chip. Use this tag for questions specifically regarding the Mini, and not just general Arduino usage.
0
votes
3answers
58 views
Several serial ports in Arduino Mini
I have a problem regarding using several serial ports on Arduino Mini. I just wanted to use both UARTs to communicate with PC and SoftwareSerial to communicate with an A7 GSM/GPRS/GPS module.
All I ...
0
votes
0answers
16 views
Arduino mini + HC-05 small power source?
I'm a little confused about the Arduino Mini. It's small so that you can incorporate it into small devices, and yet the official website says it requires a 9V battery (obviously large) or a steady 5V ...
0
votes
0answers
31 views
How would I connect & charge a 3.7V LiPo to an arduino
I want to connect a 3.7V 500mah LiPo to an arduino Mini Pro. I would like to keep my project small and am wondering what the best option would be to be able to charge the battery and also use it in a ...
1
vote
1answer
27 views
How to use setModemRegisters in RF24
The below picture is the introduction of setModemRegisters .
First: What is the mean of ModemConfig* config? I mean: how to write the parameter. Maybe just give a example, and it will be better if it'...
4
votes
1answer
172 views
How do interrupts work on the Arduino Uno and similar boards?
Please explain how interrupts work on the Arduino Uno and related boards using the ATmega328P processor. Boards such as the:
Uno
Mini
Nano
Pro Mini
Lilypad
In particular please discuss:
What to use ...
0
votes
0answers
45 views
Why is pin not reading voltage when code is implemented?
I'm learning to use the Adafruit LSM9DS0 and have cobbled this code together such that an LED will turn on when it detects motion on the accelerometer, specifically when the magnitude is over a ...
0
votes
1answer
56 views
Programming an Arduino Mini 05
So, I recently bought an Arduino Mini (5V, 16MHz), and a USB to Serial Converter.
Provided are the links to both the products:
Arduino Mini,
USB to Serial Converter
Now, I tried programming the mini ...
3
votes
2answers
114 views
I can't get code transferred to my Arduino Mini Pro
About 3 years ago Sparkfun had a sale on Arduino Minis, so I bought 6 of them (3 x 3.3 V @ 16 MHz and 3 x 5 V @16 MHz). I used two of them for separate projects (everything worked flawlessly) then ...
-1
votes
1answer
59 views
Picking the time a led on an arduino should turn on, via android
I have created an app which is connencted to my arduino via bluetoth. The user of the app can turn on and off a led which is connented to the arduino. But I want to take it a step further... I want ...
0
votes
1answer
90 views
How to read data from PC
I'm new to Arduino.
I'm passing some data from my Android phone to my Macbook via bluetooth (throught the app Sensoduino).
What I'd like to do now is to export that data to my Arduino Mini Pro.
Is ...
0
votes
1answer
118 views
Arduino mini being programmed with CH340G
So, I have bought this USB programmer with CH340G chip on it, but it seems, that I cannot program arduino mini clone.
So, this programmer has pinout of 5V|GND|TX|RX|3V3.
I have connected TX to TX ...
1
vote
0answers
282 views
Why the serial connection only work when Tx and Rx are shorted?
I have a Arduino Pro Mini 3.3V connected to a sim800l chip using a serial connection of 9600bps. When I connect the Arduino to the device, it seems I don't receive anything on the Arduino Rx pin.
I ...
0
votes
3answers
4k views
Ping IP address using ESP8266 connected to Arduino
I want to make a system using NeoPixels, an Arduino and an ESP8266 module to ping IP addresses on my network to determine if certain people are on our Wi-Fi (I'll be pinging mobile phones).
I'm ...
-1
votes
2answers
212 views
Which Bluetooth Module can I use with Arduino Micro/Mini?
I need to use a Bluetooth module with an Arduino Micro/Mini.
Please suggest which one would be the best, HC 05/06, or any other?
0
votes
1answer
56 views
Arduino TMP36 sensor
I am following the tutorial Tiny WiFi Temperature Sensor with Arduino. everthing works fine, but I have a little problem.
When the serial monitor is opened the sensor is reading fine like 23.20, 20....
0
votes
1answer
43 views
XBee + Arduino Problem
I've been doing some XBee experiments with Arduino Pro Mini 5V. I knew that XBee S2 is 3.3V only, so I've connected its Vcc to 3.3V from external supply, but I had also connected XBee RXTX to arduino ...
2
votes
1answer
54 views
powering RF on GPIO
I have been running a simple RF link between 2 arduini uno recently and everything went faily well. I am now trying a new project with an arduino mini pro (5V/16MHz) and the seeeduino RF link (@315MHz)...
2
votes
2answers
190 views
USB mini type B port on Arduino Uno
I bought today an Arduino Uno R3, and I'm looking forward to make it an HID device. I have seen many projects using a serial USB type B port. As I want to build a little gamepad, I would like to use ...
2
votes
1answer
132 views
How to calculate voltage?
I want to check each cell voltage using arduino.
and how to calculate dc current using CT Sensor using Arduino?
1
vote
1answer
495 views
How to troubleshoot the Arduino Mini and Arduino usb2serial?
I am trying to get an Arduino Mini (R5, mega 328p) working.
Just connecting it to power has following effect: the on-board LED lights up. It's the power-on-led, I presume.
Since other Arduino ...
2
votes
0answers
191 views
Read from the SD card - ACMD41 times out
I'm trying to read from the SD card using an Arduino Pro Mini (3.3 V), Pololu micro-SD reader (the 3.3V one) over a SPI protocol.
I've tried both the SD library from Arduino SDK, and the Adafruit one....
3
votes
2answers
216 views
Store floats in and reading them from flash
How do I store floats in flash and how do I read them from there? (I need a look-up table for pairs of float values.)
The storing part doesn't seem to be so difficult as this compiles:
PROGMEM float ...
1
vote
0answers
315 views
Feedback Request: HID USB to Bluetooth Relay
Bluetooth Relay Project:
Develop a USB to bluetooth adapter for my mechanical keyboard. Using a USB host shield, have an Arduino Pro Mini read keyboard usb commands and repeat them over bluetooth.
...
0
votes
1answer
582 views
Arduino Mini Pro not working with my Neopixel project
my project involves 9 Neopixel LEDs. I have tested my code with my Arduino Uno board successfully. I'm using a mix of breadboard, jumper wires, and solder to connect everything. Powering the strip of ...
1
vote
2answers
257 views
Light sensor always getting max value
I have build a simple voltage divider with a light resistor and a 5.6k resistor. I am reading the input on A0 on my arduino board but it is almost always at 1023, independent of light. If I cover it ...
6
votes
1answer
3k views
What is the maximum wire length for serial communication between two Arduinos?
I am building a project in which two Arduinos will be linked by three wires: TX an RX for serial communication and a common GND. What would be the maximum length of the wires here before communication ...
1
vote
2answers
6k views
How to know which Arduino to choose: Nano, Micro or Pro Micro?
I'm puzzled at the moment with which one to choose.
Form-factor plays a significant role in my project, so I prefer the smaller boards mentioned in the title to fuller boards like the UNO, MEGA, etc.
...
