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
31 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
22 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
652 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
3answers
185 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
40 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
23 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
25 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
27 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
43 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
21 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
20 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
121 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
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0answers
32 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 ...
0
votes
0answers
21 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
218 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
27 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
271 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
56 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
30 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
103 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
vote
1answer
59 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
69 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
38 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
141 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
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0answers
92 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 ...
0
votes
2answers
62 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
103 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
275 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
43 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
92 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
41 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
251 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 ...
0
votes
0answers
335 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
108 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
73 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
146 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 ...
1
vote
0answers
89 views
Adafruit motor shield 1 and Arduino Pro Mini
Can any one tell me how to connect Adafruit motor shield v 1.0 with Arduino Pro Mini 5v 8 Mhz. Motor shield uses which pins as I want to replace my Arduino UNO to Pro Mini and need re-wiring. Tried it ...
1
vote
1answer
70 views
FTDI Adjustable 3v3/5v only outputs 5v
I bought the below FTDI programmer for use with my 3v3 arduino pro mini. But even when the switch is set to 3v3 it is powering the board with 5v, (hence the IO voltage is also 5v). Note that when the ...
1
vote
2answers
221 views
sending struct from Arduino to Raspberry Pi - wrong types
I'm using Raspberry Pi and Arduinos for my home automation project where Raspi is controler of Arduino nodes.
I use nRF24 wireless transceiver to communicate these two.
My problem is that when I was ...
0
votes
0answers
177 views
Pressing button stops listening on nrf24l01
I have been tinkering for 2 days to manage send and receive between 2 arduinos. My code is bellow:
Arduino 1:
#include <SPI.h>
#include <RF24.h>
#include "printf.h"
#define LED 2
#define ...
0
votes
1answer
648 views
Powering an Arduino Pro Mini directly from a LiPo
I've recently purchased an Arduino Pro Mini, 3.3V version. I've planned to use it in a diy remote: I've empty a ps2 remote, just left the buttons, and the board will be inside. The remote will be ...
0
votes
1answer
107 views
How do I make a atmega 32u4 mp3 player? [closed]
Is there a way to use the atmega 32u4 breakout board to make a mp3 player without the mp3 shield?
1
vote
1answer
266 views
Unable to power an Arduino Pro Mini through the RAW pin
I've recently bought an Arduino Pro Mini, the 3.3V and 8MHz version. The first time I powered it, using the VCC pin, all worked. But, as soon as I attempt using the RAW pin instead, nothing lights ...
0
votes
1answer
51 views
Arduino stk500_getsync(): not in sync [duplicate]
We have an arduino pro mini, we are trying to trying to upload sketch the controller but we are prohibited, as the arduino attempt to upload the sketch, it display an error of: not in sync.
We are ...
0
votes
1answer
89 views
Custom Bootloader on Atmega328p - PU - 28 pin DIP
I am experimenting with low-power wireless arduino modules. For that, I needed 3V powered arduino so that I can do away with voltage regulators which eat up a lot of battery juice.
I am using 28 pin ...
0
votes
1answer
102 views
Running Pro Mini Continuous on 12v w/o Damaging Regulator
A Pro Mini needs to be placed in a 100mmx50mmx25mm, no holes but not air tight ABS plastic enclosure, with a 12v power supply connected to the raw input. It will be consuming max 40mA, ambient ...
6
votes
1answer
1k views
Problem programming Mini Pro via Arduino as ISP
I just picked up a pair of Arduino Mini Pro 5v clone boards (Inland, sold at Microcenter, currently $4 USD) and I wanted to use my Uno as an ISP like I've done with ATmega328 and ATtiny85 chips ...
1
vote
2answers
939 views
IR Receiver interrupt and arduino sleep mode
I need to put my arduino into the sleep mode in order to consume less power. My arduino receives IR data and do some work with it, but I need to make it sleep until there is no data. If the data has ...
0
votes
4answers
1k views
How to have an Arduino communicate with 3 other Arduinos
I was wondering how can I get 4 Arduinos in total to communicate with each-other through a wired connection. The goal is to have the master Arduino send a number 0-100 to each of the other arduinos.
...
0
votes
1answer
44 views
Use Arduino pro micro to program pro mini?
So I got a pro micro and 2 pro minis and I was wondering if I could use the pro micro to program my minis? Anyone has any links or guides on how to do this, if at all possible?
