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.

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27 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
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2answers
60 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
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1answer
32 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
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1answer
55 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
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1answer
45 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 ...
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0answers
172 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
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2answers
2k views

Ping IP address using ESP8266 connected to Arduino

I'm wanting to make a system using neo-pixels, an arduino and an ESP8266 module to ping IP addresses on my network to determine if certain people are on our wifi (I'll be pinging mobile phones). I'm ...
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2answers
48 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?
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1answer
50 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
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1answer
39 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
48 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
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2answers
149 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
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1answer
120 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?
0
votes
1answer
240 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
159 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....
2
votes
1answer
138 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
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0answers
227 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
362 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 ...
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2answers
188 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
2k 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 ...
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2answers
5k 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....