An Arduino Pro Mini is a small microcontroller derived from the Arduino Uno using the ATmega328. It is unique for its tiny size and the required external FTDI adapter.
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30 views
Atmega16u2 Serial to USB adaptors [duplicate]
The best part of Atmega16u2 is that, it can be act as a USB-HID device after flashing the keyboard firmware (hex file) in it using DFU mode. In Arduino Uno this can be achieved but but due to UNO ...
0
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2answers
51 views
How to get the ID of an Arduino? [duplicate]
I use Arduino Pro Mini. As I know, every MCU has a number. Different MCU has different number. How to get it ?
0
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1answer
30 views
How do I run multiple vibration motors from an Arduino Mini with PWM?
I'm building a project for my Physical Computing class that involves 4 vibration motors for varied haptic feedback based on serial input via analogRead. I have each coming out of their own pin and ...
1
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1answer
80 views
It seems like the math of arduino is off
[SOLVED] By changing the offset for the incoming data into int16_t type there won't be any rounding errors and the values I'm getting are all back to zero in the sensor its base position
This is my ...
1
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1answer
120 views
Cannot move TM1637 from Uno to Pro Mini
I have a very simple setup which works fine with an Uno.
#include <SevenSegmentTM1637.h>
#include <SevenSegmentExtended.h>
const byte PIN_CLK = 2;
const byte PIN_DIO = 3;
...
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0answers
32 views
SOLVED - How can I disable a specific interrupt for a while?
The solution is below
After beat my first obstacle, then I want to put the board into sleep mode every 8 seconds but it can be awaken when a button is pressed. Then a counter increments and again the ...
4
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0answers
27 views
SOLVED - Waking up async the Arduino while it's sleeping periodically
The solution is below.
I´m using LowPower.h and PinChangeInt.h libraries to put my Arduino into the sleep mode every 8 seconds and then it wakes up, modifies a counter and it goes to sleep again, but ...
1
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1answer
48 views
Waking up async the Arduino while it's sleeping periodically
The solution is below.
I´m using LowPower.h and PinChangeInt.h libraries to put my Arduino into the sleep mode every 8 seconds and then it wakes up, modifies a counter and it goes to sleep again, but ...
1
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2answers
56 views
Same code in setup() and loop() give different results
As the answers to this question and this one state, setup() and loop() are identical in the way they execute code (apart from the obvious looping function of loop()).
However.
I get different ...
0
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0answers
35 views
How to upload sketch from Uno to Pro mini without removing Atmega328p
I know there's a lot of tutorials out there already about how to upload a sketch to Pro mini. However a lot of them doesn't exactly fit what I'm looking for.
What I'm looking for it a way to ...
0
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2answers
38 views
Cannot set Pins to LOW
I am controlling 2 motors from my Arduino Pro Mini and L293D motor driver module. Problem is, I have to set a pin high and after 1 second set it to LOW. But that doesn't happen... The pin just stays ...
1
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0answers
25 views
Board.txt configuration change Atmega328p
Hi I am trying to configure an Atmega328p to run with an 8MHz oscillator in part to reduce power consumption and so I don't need to have level shifters all over my project.
I have changed the board....
3
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1answer
39 views
Arduino Pro Mini RESET button suddenly stopped working
I am powering my Pro Mini(3.3V version) using an external battery (~6.5V 700mA) . I used to connect it to the RAW and GND pins on my pro mini and everything ran fine.
Today when I powered up my ...
1
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3answers
63 views
Arduino Pro Mini Serial Monitor garbage
This is my first post. I hope that I am posting in the right section of the forum. Otherwise, could an admin move this topic to the appropriate section please?
Board : Arduino Pro Mini 3.3V 8MHz
...
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1answer
30 views
Arduino Pro Mini automatically resetting
I have an Arduino Pro Mini 3.3v in a robot. The problem is, the Mini would automatically randomly overwrite the uploaded sketch with the default blink sketch... And this is becoming quite a problem.
...
4
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1answer
39 views
delete the memory or re-upload a program
At the moment I am following the instructions of this project https://github.com/JoernL/LimiTTer. Besides the peripheral parts like a Bluetooth module and an NFC module, the central unit is an Arduino ...
0
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1answer
24 views
Arduino Pro Mini name in CMakeList.txt in CLion
I recently try to get my Arduino Pro Mini (5v 16mhz)running in Clion.
I tried to set up the CMakeList.txt but I get the following error:
Error:Can not find f_cpu in boards.txt for Arduino board ...
8
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2answers
977 views
very lightweight low power microcontroller with memory?
I have build a couple of projects using arduino. For a new project I want to log skin surface temperature vs. time (just perhaps a few times per day) and possibly other easy to obtain info such as ...
4
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0answers
37 views
Trouble connecting Arduino Pro Mini (Atmega328, 3.3V) to nRF24L01 over SPI, receiving all 0 values when I use radio.printDetails();
I am trying to connect my Arduino Pro Mini 3.3V to an nRF24L01 transceiver and cannot see what I am doing wrong. I've checked my wiring a million times because the problem hints there is an invalid or ...
1
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4answers
121 views
Arduino 16 MHz with only 3.3V?
Now I have these Arduino Pro Mini from Sparkfun. They are the latest version that I know (yeah, it's the one that have those horrible misaligned pins). Now they are designed around the ATmega328P and ...
0
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1answer
41 views
Eclipse C++ Ide for Arduino 2.0 and eeprom.h (no such file or directory)
I am using pro mini and above stated arduino eclipse plugin. I have a project that is close to 1000 LOC and I am using things such as analogRead() and u8g display library. Now I am at the point where ...
0
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2answers
80 views
Multiple I2C BREAKOUTS with pull-up resistors doesn't work [UPDATE]
[UPDATE] Now it works fine but the as soon as I add the GY-521 module (hardware not software), it starts sending me crapy info
Project uses:
Arduino Pro Mini as brain
FTDI as a programmer
GY-521 ...
3
votes
2answers
125 views
Soldering Arduino Pro Mini's disaligned pins
I have a couples of Arduino Pro Minis (original from sparkfun) that have those 4 disaligned pin. Unfortunetely, I need to use 2 of them, A4 and A5, because they are the I2C pins and I want to solder ...
2
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2answers
68 views
Arduino mini pro as ISP for Atmega329P-PU serial monitor failing
After trying a lot of tutorials and manuals around the web including at least 20 solutions here on StackExchange, I don't know what to try anymore.
My goal is to write a message in the serial monitor ...
0
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0answers
45 views
I cant upload arduino promini using a uno r3
Arduino: 1.6.10 (Windows 10), Board: "Arduino Pro or Pro Mini, ATmega328 (5V, 16 MHz)"
Build options changed, rebuilding all
Sketch uses 928 bytes (3%) of program storage space. Maximum is 30,720 ...
1
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1answer
51 views
How do I know if bootloader flash was successful?
I just bought a raw Atmega328p microcontroller. I am attempting to flash it with the Arduino bootloader.
The process seemed relatively straightforward as I had just followed the posted tutorial (...
0
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0answers
55 views
Using the manchester Libary with Attiny85 and Ardunio Pro Mini
I have problems sending data from my Attiny85 to my Ardunio Pro Mini with 433MHz RF Modules with the Arduino Manchester Library.
The LEDs are switching on both sender and receiver, but I am only ...
0
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1answer
77 views
Can I convert 3.7V to 5V's using 3.3v to 5v converter
THe product: (https://www.sparkfun.com/products/12009)
So guys, here' s a pretty simple but important question for me:
Can I convert 3.7V (li-po battery's voltage level) to 5V's (I do have arduino ...
0
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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
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0answers
43 views
Control the Power of a Raspberry Pi 3 using the RUN header?
I want to control the power of a Raspberry Pi 3 using an Arduino Pro Mini (the 3.3V version). I don't want to change anything on the board, except soldering the RUN header. I also can't put anything ...
0
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1answer
34 views
Control/switching of headphone audio
I need to do some simple line control of audio out from a phone, 3.5mm TRS. I would have preferred to use transistors, but the voltage drop on an already fairly weak signal makes it unusable. Also not ...
0
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1answer
15 views
Connection of seeeduino gprs with relay module
Good day, on my project, i'm working on home automation the stage i am now is the implementation part where i want to assemble all the materials i need to use. the materials are: seeeduino gprs(...
0
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1answer
55 views
Arduino Pro Mini interrupts timer not working
i am trying to make an arduino pro mini sd card serial logger.The arduino should log the data that comes over the uart and write it to an sd card and if it is no data on the serial for 25 seconds to ...
0
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1answer
75 views
Yikes! Invalid device signature. Fail to burn bootloader and read fuses
I know this problem is kinda common but I had to post it anyway.
Before anything, I would like to inform you guys that I changed the fuse of my arduino pro 3v3@8MHz to allow 1,8V brownout and also ...
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0answers
37 views
code, that is working on arduino uno didn´t work on pro mini
i am trying to make cnc machine controlled by ps2 mouse. I wrote the code, and it is working, when i upload it to the UNO. But when i uploaded that code to the arduno pro mini (throught ISP) it didn´t ...
0
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1answer
46 views
Atmega328p clock and safe operation zone
im not used to write in english but i hope you guys can understand. I have some doubts about using the arduino pro mini 3v3@8Mhz
I know its possible to change the clock to 1 MHz with the fuses easily ...
0
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0answers
49 views
avrdude error RetroWatch
Im trying to make a RetroWatch (http://www.instructables.com/id/Make-your-own-smart-watch/?ALLSTEPS) and am getting an error when uploading. I am uploading to a pro mini through an Uno.
WARNING: ...
3
votes
3answers
158 views
Arduino Project Power Consumption Calculations
I have built an automated window blind controller that will adjust the angle of a servo based on the value received via a light dependent resistor. Once every 10 minutes the MCU wakes up, gets the ...
0
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0answers
29 views
Aruino pro mini not accepting new code
I recently purchased an Arduino pro mini from Amazon, and a ch340g serial adaptor to program it. When I first used it, I only used the simple blink program, just editing the delays. This worked great, ...
0
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0answers
93 views
RC Switch with Arduino Pro Mini & 433MHz Receiver
I have downloaded the latest RC Switch library and uploaded the simple receive example to my arduino pro mini 3.3v with the receiver attached to pin 2, interrupt 0.
Testing it with my controller, ...
0
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0answers
86 views
Raw power to arduino pro mini
I am using a arduino pro mini and want to power it using a 9V battery. I have connected the battery to RAW and ground.
However now the VCC pin seems to provide 3.3V instead of 5V (I am using a 5V ...
1
vote
2answers
193 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
votes
1answer
41 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
73 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); // ...
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0answers
114 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
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1answer
53 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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1answer
69 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?
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4answers
143 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 simple ...
0
votes
2answers
199 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
146 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 ...
