Arduino Pro Mini is a microcontroller board based on the ATmega168. With 14 digital io pins. Eight are analog inputs, six are capable of PWM output. Programming and power is done via a six pin header which can be connected to a FTDI cable. The official board was designed and is manufactured by ...
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2answers
26 views
Arduino Pro mini to CH340G Connection problem
I have worked with Arduino UNO but recently I bought a new Arduino Pro mini 5v 16M and a CH340G converter to work with. I have searched google to connect pins but I found examples that explains this ...
0
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1answer
24 views
Will Arduino Pro Mini 3.3V run at half the speed of 5V version?
Provided a very simple sketch like this:
void loop() {
digitalWrite(1, !digitalRead(1));
}
... should I expect 5V Arduino to run twice as fast as 3.3V, or are there some internal adjustments in ...
0
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1answer
37 views
What is the output of Software Serial .read() function
Hi I am new to arduino development i was using esp8266 using software serial library
here is the code
#include<stdlib.h>
#include <SoftwareSerial.h>
SoftwareSerial monitor(2, 3); ...
0
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0answers
30 views
Esp8266 Serial Connection using Arduino showing garbage
I am new to Arduino pro mini (5 V running it at 3.3 V) and esp8266.
I am trying to use AT commands using sketch program.
Here is reported the code I tried:
#include <SoftwareSerial.h>
...
0
votes
1answer
20 views
Can I use Arduino Nano V3 to program another arduino (Pro Mini)?
I was planning to buy serial to USB converter (FT232RL) to be able to program Arduino Pro Mini.
But the shop nearby offers Arduino Nano V3 at almost the same price.
Could I use this Arduino instead ...
0
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0answers
16 views
Connectivity of arduino pro mini with different modules
Can an arduino pro mini be used with an audio decoder, 2.8 inch tft touch screen and ethernet shield simultaneouly?
1
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4answers
86 views
Power Arduino from 230v with battery fallback
I've build a fairly simple doorbell using Arduino Pro Mini 3.3V: https://www.youtube.com/watch?v=WFd94CYT2Lw&feature=youtu.be
Here's the current setup:
Arduino running of the 9V battery
A ...
0
votes
2answers
31 views
PWM on non PWM pins
Why does this code not function in a similar way to the example fade sketch?
I have had to resort to using bit-banging as a way to implement PWM onto non PWM pins due to a lack of available free pins ...
0
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0answers
26 views
Bit-banging Pulse Width Modulation LED fade
Whilst programming an arduino pro mini I realised I had ran out of PWM pins. Upon reading the tutorial about "bit-banging on the official arduino website I wanted to use this in conjunction with the ...
1
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2answers
40 views
Arduino PRO Mini - The pads [was “jumpers”] on the back and Low Power Consumption
I've noticed that on the back of an Arduino PRO mini are two Jumpers next to the A4 and A5 pins, marked with red in the following :
Looking at the leads one seems to be a bypass for the POWER Led ...
1
vote
1answer
29 views
How to use Arduino Pro Mini without Programmer
I'm a software engineer, but I'm not too skilled at understanding hardware design yet. I'm trying to learn how to use an Arduino Pro Mini board without the programmer connected, so I can actually make ...
0
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1answer
28 views
Pro Mini Fuse Repair
It looks like I broke my Arduino (Compatible) Pro Mini board using AtmelStudio to change the fuses. I was having trouble with speed and using some basic sketches. For example, the LED blink was on for ...
1
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0answers
47 views
Arduino Pro Mini I2C Problem
I am trying to connect a distance sensor VL6180x to Arduino Pro Mini via I2C. Yesterday it was working without any problems, but today it refuses to work, even though I haven't changed anything. The ...
0
votes
1answer
52 views
Get Analog Input From Arduino To Android Studio (Real-Time)
I am coding an application in Android Studio that uses analog inputs from an arduino. I am trying to send analog input from an Arduino Pro mini to an Android App. However, I cannot connect straight to ...
0
votes
2answers
41 views
Need to make an action just once when condition is reached
I'm making a device for the visually disabled that makes a sound when the water in a bowl reach certain levels.
I've already made the sensors for three levels of water and if statements to make the ...
1
vote
2answers
31 views
Arduino Pro Mini and Electronic Speed Controller (ESC)
I want to send servo signal to ESC and Servo with my 3.3V Arduino Pro Mini.
Can the ESC/Servo read 3.3V signal from Arduino Pro Mini? Or do I need to make some level shifter to make 5V signal?
6
votes
1answer
677 views
Pin 13 fires relay when powering on… How to disable?
Pin 13 fires relay when powering on... How to disable?
I'm using pro mini 5v 16MHz and a DC 12V 2 Channel Relay Module Optocoupler. The relay Jd-VCC is powered by a 12V and it's VCC is 5V (the same as ...
1
vote
4answers
278 views
Powering from 3V coin cell to VCC, using I/O pin as supply GND
I'm thinking of creating a "small" electronic dice.
(I will solder the button a little different though xD)
But there are some concerns on my design:
Powering from a coin-cell
It's a 5V arduino ...
0
votes
2answers
74 views
ISR executes twice if data coming through SoftwareSerial
I am using Arduino Pro Mini to get GPS info from a u-blox NEO-M8N chip and display it on a Adafruit OLED display. NEO-M8N has a PPS(pulse per second) output which is aligned to GPS's second. Because ...
1
vote
1answer
24 views
Uploading code to Arduino wirelessly
I have been working on a project watch which would work best if it is entirely sealed (to waterproof it). The watch may need future updates, but I will be unable to send code to it using a usb ...
0
votes
1answer
30 views
Why does the Pro Mini 5 v and 3.3 v version have different clock frequencies?
It looks like the 5 volt version used the 16MHz external crystal while the 3.3V one uses the 8MHz crystal. I need to use 3.3v as my operating voltage.
Can I just remove the linear regulator and bring ...
0
votes
0answers
35 views
Is there any diffrence between UNO and Pro micro Hardware Serial?
I've use this tutorial with Uno and it works great, but when i replace the UNO with Pro Mini 5v, GPRS works fine(communicate with micro perfectly) but GPS can't send back coordinate.
I connected GPS ...
0
votes
1answer
61 views
Mounting Arduino in an enclosure
I've decided to use Sparkfun's Pro Mini boards to make my project into a semi-professional product.
My first thought turned to enclosures - of which the entire internet seems to be bereft. If I ever ...
1
vote
1answer
25 views
Arduino Pro Mini
I have the following problem
I have a pro mini clone, with 328/5V. It was successfully working in my board. I pulled it out of the board, and wanted to update my software. I connected it to my FTDI, ...
0
votes
0answers
23 views
Arduino resets itself when its connected via Bluetooth
I've got an ArduIMU v3+ (Atmega 328, 5V, 16MhZ) and a Bluetooth Mate Silver (NT-42) connected to it.
When I run this firmware https://gist.github.com/dj-hedgehog/42b9899ad3c4a1844370 and connect it ...
0
votes
2answers
308 views
MQTT broker and Arduino + Sensors NRF24L01
I am newbie, I have never used MQTT before, so I have some questions.
Here is my topology.
I have several sensors (Arduino Pro Mini + NRF24L01) and main server/handler(Arduino Mega + Ethernet Shield ...
1
vote
0answers
33 views
Arduino signed int can't fire timer > 15 seconds
I have tried to use different libraries like TimeAlarms , SimpleTimer, Timer and others. My goal is to call function periodically every minute or so. Each library works fine when repeat time is less ...
1
vote
0answers
28 views
How to generate Analog Signal (Voice) to the microphone
I have question about microphone and generating sound signal. I have microphone in my intercom at home. It is simple analog microphone, not digital.
What I want is to connect arduino analog ...
3
votes
2answers
444 views
What is the best serial protocol for bidirectional communication with NodeMCU?
Except hardware UART. Main requirements are reliability and simplicity of use. Speed isn't as important.
Details:
I have an Arduino Pro Mini (ATmega328P 5V) controlled via UART.
I wish to connect an ...
0
votes
1answer
48 views
Unable to initialize W5100 using Arduino Pro Mini
I am unable to initialize a W5100 module using an Arduino Pro Mini. I try setting the MAC and IP addresses but read invalid values thereafter.
Here is the Arduino program along with the output:
void ...
0
votes
1answer
458 views
Use ESP8266 as WiFi client connected to Arduino Pro Mini
So i'm trying to use the PubSubClient Library on my arduino mini pro, but I'm connecting to the internet via wifi using an ESP8266.
Using a mini means I have to use software serial to connect to the ...
-1
votes
1answer
65 views
Reading SPI between an MCU and NRF24L01
I have a remote control that has an STM32 MCU and sends data via NRF24L01. What I would like to do is clone the data sent when buttons are pressed by reading what is being sent to the RF24 and then ...
1
vote
1answer
41 views
Can I use my phone's charger to connect arduino M0 pro R3 with computer?
I found out that the arduino M0 pro R3 needs either micro HDMI or micro USB.
Since I don't have any micro USB or HDMI adapters, can I use the Samsung galaxy USB/micro adapter to connect?
1
vote
1answer
220 views
Atmega328P burn bootloader with FTDI
I need your help.
I am using Arduino ProMini in my project.
In project board there is Atmega328P which doesn't have Arduino bootloader, and Atmega328P RXD, TXD pins are connected to FTDI ...
1
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1answer
71 views
LM35 and Character LCD
I have an arduino pro mini and I have attached a 16x2 character LCD and an LM35 analog temperature sensor. When I upload a sketch using only the sensor and send the readings to serial monitor, the ...
3
votes
2answers
78 views
Newbie - What is the Difference Between Power Supply's GND and Arduino's GND?
I am new to electronics and Arduino.
What is the difference between power supply ground and Arduino's ground. If I connect my LED cathode to power ground, it doesn't work. But if I connect it to ...
0
votes
0answers
48 views
Arduino Pro Mini+ MPU 9150 BreakoutBoard gives unreadable symbols on Serial Monitor via Bluetooth Mate?
I am trying to read motion fusion data from MPU-9150 breakout board via bluetooth. I have set the baud rate to 38400 on the sketch uploaded on the Arduino Pro Mini.
When I am connect via USB the ...
2
votes
1answer
172 views
Arduino Pro Mini lower BOD problem
I am planing to build a project where an arduino pro mini 3.3V runs on 2 aa batteries. The standard brown out detection shuts it down at about 2.7/2.8V where it could run on lower voltages too.
So I ...
1
vote
0answers
104 views
Raspberry Pi, Teensy and Arduino's on i2c
I just got into an interesting mess.
I have 3 Arduino's (Pro Mini's) and 2x Teensy's (3.1's) connected via I2C to a Raspberry Pi Master. The 2x Teensy's I2C data lines are connected via OctoBoards ...
-1
votes
2answers
73 views
FTDI breakout connection
I have been successfully programming UNO boards. I wanted to transfer the project to a Pro Mini. I am using a FTDI breakout. It wouldn't show the device port. I found the device driver I was using was ...
0
votes
2answers
128 views
Powering arduino and 12V Fan from same supply
I have found a relatively small 12V switching power supply that I want to build into my device, using it to power both the Arduino Pro Mini and a couple of 12V cpu fans.
Am I correct in assuming that ...
1
vote
2answers
412 views
Waiting for an AT command to complete
I'm looking for a way to wait for a response from an AT command to return OK or CONNECTED or whatever the command returns when it's true.
I can check if the serial is available, but that means I have ...
0
votes
1answer
45 views
Arduino Delivering less power
I connected 4x716 Coreless DC Motors on pin 13,12,11,10 and 1xGY-521 to Arduino Pro Mini 328, 5v but speed of propellers is not enough to produce enough torque to lift the quad whereas when i connect ...
0
votes
1answer
110 views
High power consumption during power down mode
I try to use power down mode to extend battery life, but no matter what sleep library I use, the power consumption never goes below 3.4-3.6 mA. I'm using a chinese pro mini board with VCC input (but ...
0
votes
1answer
42 views
Arduino LED lighting up when signal is reading low on multimeter
My code is designed to play a tone when ever pin 3 is high on my Arduino. When I am examine the pins voltage with a multimeter it is always reading below 1 volt. When I examined the voltage off of a ...
-1
votes
1answer
287 views
MPU6050 or GY521/HMC5883 chips are burnt for no reason
I been trying to interface MPU6050 and HMC5883 with an Arduino Pro Mini/Nano. I²C scanner works just fine and identifies the device with no issues. I let the I²C scanner run like for 5 minutes and I ...
1
vote
0answers
464 views
Motor shield power from Arduino pro mini 5v RAW Pin 150mAh cannot run servo
linked to my old question, Pro Mini 5v with Adafruit motor shield v1 power sharing problems
I figured out and use one 7.2v battery (6 AA cells), and link it with RAW pin to Pro mini and join its 5v ...
1
vote
1answer
122 views
How can I build a simple “Smartwatch” with Arduino Pro Mini and Display?
I want to know how I can build a simple "Smartwatch" with an Arduino Pro Mini and a Display with a size from maybe 1,5" what Display should I use for Touch and color?
I only want simple things like ...
1
vote
0answers
83 views
Arduino Mini Pro 3.3 V Issue with Bluetooth Mate
I have an Arduino Mini Pro 3.3 V powered from a coin cell(3.6 V, CR2450) and connected to Bluetooth Mate Gold. I have checked the connections and they are fine. I can also connect to the bluetooth ...
0
votes
2answers
170 views
Pro Mini 5v with Adafruit motor shield v1 power sharing problems
I am trying to convert a RC car into autonomous car using Arduino Pro Mini 5v 16 Mhz. I have done this with UNO and Adafruit motor shield 1.0 with 4 gear motors and one micro servo for mounting range ...
