Questions tagged [arduino-pro-mini]

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.

40 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2 votes
0 answers
76 views

My LED display fails with MSGEQ7 output stuck

I have an Arduino setup with a pro-mini, a MSGEQ7, and a auto-gain mic. Even if I remove the audio input to the MSGEQ7 remains the same in the 890s (out of 1024). It's the same on each of two new ...
mystack's user avatar
  • 21
2 votes
0 answers
248 views

Arduino pro mini resetting itself

I am working on a brushed motor quadcopter using Arduino pro mini. Every time I try to throttle, the Arduino gets reset by itself (motors start to spin but they will be turned off in 2 sec). I have ...
AjithMahi07's user avatar
2 votes
0 answers
72 views

Arduino Voltage Reading Problem

I was trying made a gear indicator for my bike, with manually sensing the gear shift. But failed, cause my bike has no separate "neutral" wire, instead there is gear sensor in-built...!! ...
BLUE's user avatar
  • 35
2 votes
0 answers
119 views

Can't reprogram Arduino on protoboard (perfboard), but could program the same circuit on breadboard

So I have a circuit that works well when it's on a breadboard and without removing any pins I'm able to upload sketches, but for some reason when I transition it to a protoboard I can no longer upload ...
auphynne's user avatar
  • 125
2 votes
0 answers
262 views

Installing Optiboot loader for pro mini 3.3V 8MHz

I have tried to install a better bootloader in some chinese Arduino pro mini boards. I have tried the OptiLoader application via an ArduinoAsISP. I failed in some way. The boards got unstable, I can ...
Wirewrap's user avatar
  • 341
2 votes
0 answers
68 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 ...
dugdthndwytn's user avatar
2 votes
0 answers
341 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 ...
dugdthndwytn's user avatar
2 votes
0 answers
185 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 ...
devchandan's user avatar
2 votes
0 answers
1k 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 ...
Builder's user avatar
  • 195
2 votes
0 answers
491 views

Pro Mini 3.3v + Neopixel not working when disconnected from USB

I'm doing a project using an Arduino pro mini 3.3v and Adafruit's Neopixel. I've flashed an example (strand example) from the Adafruit Neopixel's library sketch into the Arduino using the FTDI Basic ...
cagnarrogna's user avatar
2 votes
0 answers
365 views

Connecting Indicator LEDs to Arduino Pro Mini

I'm new to electronics and unsure whether my design below will work as intended. XBee Series 2 and Arduino Pro Mini 5V are used. There are 4 LEDs, each with the following roles: LED1: Flicker when ...
Nyxynyx's user avatar
  • 1,389
2 votes
0 answers
360 views

Arduino ProMini green led flashing and unable to reset

so I'm using a promini running on solar power. For some reason, after sometime it gets stuck with the green led flashing and only by cutting power can I reset the promini. Even the reset button doesnt ...
suckms's user avatar
  • 125
1 vote
0 answers
264 views

How can I program an Arduino Pro Mini with an ESP8266-01 connected to its TX and RX?

I am working on a project that uses an Arduino Pro Mini to gather information from various sensor. Once the readings are taken I turn on an ESP-01 from a separate dedicated 3.3v power supply. The ESP-...
user1114881's user avatar
1 vote
0 answers
60 views

Low power RF decoder possible?

I'm building a panic button project for my grandma which uses a 433MHz RF remote keyfob and a 3.3v Pro Mini connected to an RF receiver, a buzzer and an led. The purpose is that whenever she needs ...
Kokachi's user avatar
  • 123
1 vote
0 answers
131 views

Problem getting data from Arduino pro mini

I am currently working on a drone project using multiwii. I m using mpu6050 as gyro and accelerometer sensor with i2c protocol. I was able to read data coming from mpu6050 while using Arduino Uno ...
Anmol Kumar's user avatar
1 vote
0 answers
97 views

Problems using SIM808 with Pro Mini

I'm having problems with my setup. I'm trying to create a wind-speed system when you send an SMS to retrieve the correct wind speed as an SMS response. I'm using a pro mini, connected by USB via FTDI, ...
connersz's user avatar
  • 266
1 vote
0 answers
207 views

arduino pro mini fqbn

Introduction I am trying to program an arduino pro mini, I have to use this board because of it's size. I use the arduino-cli to program arduino and one of the steps to upload code to the system ...
Michele Cioccarelli's user avatar
1 vote
0 answers
438 views

Analog Comparator works on Nano, but not working on Pro Mini 3.3v

I've coded an analog comparator to work on Nano, but the same code does not work on a brand new Pro Mini 3.3v 8MHz. The serial monitor just outputs the triggered interrupt continuously. Lines orange ...
Rick's user avatar
  • 61
1 vote
0 answers
55 views

Arduino AT Cmd Not Working

We are Using I-CUBE-LRWA Lora Module AT Cmd with Arduino ProMini Set of commands set with DockLight working Perfectly but with Arduino, we are getting some coded response and well every time RXTimeout ...
Rahul SIngh's user avatar
1 vote
0 answers
56 views

Can only program Pro Mini board once then error getsync()

I am 100% new to Arduino. I am using the Pro Mini 328P 3.3v 8mhz board. I can successfully write to the board once with the Blink program. I set the FTDI to 3.3v jumper. It works. Then if I try to ...
Gary Quiring's user avatar
1 vote
0 answers
201 views

Sketch works on Arduino nano but not Pro Mini

I have a simple test sketch to run for my led aquarium: #include <IRremote.h> #include <IRremoteInt.h> IRsend irsend; void setup() { } void loop() { irsend.sendNEC(0xF7C03F, 32); ...
GreenXL's user avatar
  • 11
1 vote
0 answers
459 views

HX711 with NodeMcu

I am trying to make a scale that measuring weight. In internet i did some researches so i got some questions. I have this module as a HX711 And square 3 wired loadcells( Red,White,Black Wired). My ...
Dogan Cignakli's user avatar
1 vote
0 answers
189 views

DS3231 OSF register changing without lost date

Dears, I have an logger prototype with arduino and ds3231 breadboard. My code check periodically OSF register to check if oscillator is/was stopped, as informed in datasheet. I turn on my logger, ...
Mario J.'s user avatar
1 vote
0 answers
1k views

Choosing between ESP32 and Arduino Pro Mini

This is probably a fundamental question but I am hoping to get some pointers on how to chose between Arduino Pro Mini and ESP 32. I am hoping to make a wrist based wearable like fitbit. Three ...
PagMax's user avatar
  • 111
1 vote
0 answers
175 views

Programming arduino with FT232RL, not in sync: resp=0x00

I realize this generic error has been asked about lots of times before, but I have been unable to find an answer that works for me. I have a bunch of pro mini's that I program with an FT232RL. It ...
Akegata's user avatar
  • 11
1 vote
0 answers
685 views

Flashing firmware in ft232rl

I am new with arduino and hardwares at all and I am having some problems in a project where I want to assemble the head tracker device from this project https://git.iem.at/DIY/MrHeadTracker/wikis/mrht-...
Enzor's user avatar
  • 11
1 vote
0 answers
614 views

Is there a bridge needed to connect Pro Mini 3.3v to HC-05 (level 3.3v)?

I can't understand how to connect my arduino pro mini https://www.amazon.in/gp/product/B071ZCHW5P/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 To my HC-05 Bluetooth module https://www.ebay.in/itm/...
Hardik Sharma's user avatar
1 vote
0 answers
648 views

Arduino Pro Mini (5v) I2C pullups

I recently bought an ESP-WROOM-32 module and I want it to talk to my Pro Mini via I2C. Do I have to pull-up the lines to the 3.3v side (ESP32)? Since the Pro Mini runs at 5v, I think it's a bad idea ...
JFetz2191's user avatar
  • 155
1 vote
0 answers
60 views

Analog Read gives Erratic behaviour in Struct

I'm getting some very strange behaviour from a Haptic feedback system I'm trying to make. The test code works fine as a Multiple-In One-Out in the main loop, but once I moved the code to the Struct, I ...
Minothor's user avatar
  • 111
1 vote
0 answers
730 views

Wake up arduino mini with a external signal from a rf wake up receiver

I am working in an arduino which sleeps after 1.2 seconds of running time and wake up when receiving a signal in the pin 2, but this last part is not working. I tried with the four modes of the ...
Miguel Sanz Narrillos's user avatar
1 vote
0 answers
624 views

Arduino Pro Mini ATmega 328P: garbage output on serial console

Arduino Pro Mini ATmega 328P 3.3V 8MHz, connected to USB port via USB to Serial breakout board built around the FT232RL FTDI chip. JTAGenum project code uploaded to the Arduino. I opened terminal and ...
minto's user avatar
  • 221
1 vote
1 answer
121 views

Arduino Mega prototype analog timer interrupts: newbie question

I am currently using an Arduino Mega with a fast vibration sensor to trigger the components operation (force sensor, temperature sensor) and also toggle sleep mode. I am very new at this and I have ...
Worapat Sopa's user avatar
1 vote
3 answers
450 views

How to set cables to connect CP2102 to Pro Mini?

How to connect the cables in order to program the pro mini with the CP2102 usb interface ? The TX RX and GND is easy, but I am not sure about the RST, DTR, DST, etc When I try cables like this: TX .....
adrianTNT's user avatar
  • 252
0 votes
1 answer
320 views

How to find the time of any point on the graph on an Arduino serial plotter or Processing software?

I am plotting the graph of some sensor values on my Arduino serial plotter which looks something like this - But what I want to do is hover over any point on the graph and display the time at that ...
blazingcannon's user avatar
0 votes
1 answer
1k views

GPS: Not receiving any valid output from ATGM336H

I have an Arduino Pro Mini along with a GPS Unit - ATGM336H. Below is the sketch I'm currently using: #include <SoftwareSerial.h> #include "Ublox.h" SoftwareSerial GPS(4,5); Ublox serial_gps; ...
Mitchel Stuart Fountaine's user avatar
0 votes
1 answer
570 views

SPI.H library to control APA102

I am trying to run a strip of APA102 addressable LED's using a Mini pro. The same strip I can run using a raspberry pi using SPI so I know the Strip works and what data I need to send to get it ...
DevilWAH's user avatar
  • 143
-1 votes
2 answers
720 views

How to use AT+CFTRANTX command in SIM7100

I am working on a project using pro mini 8MHz/3.3v and SIM7100, I want to know how can I used AT+CFTRANTX command. I am try to read file from EFS and write to SD card via Serial port. I have get some ...
Ali Morawej's user avatar
-1 votes
1 answer
977 views

Sending a string from Arduino to ESP8266 works on UNO but not on Pro Mini

I have a project where I am getting sensor data and sending it over to an ESP8266-01 to send to ThingSpeak. After some work I got it to work. So like a real smart person I decided to replace the ...
user1114881's user avatar
-1 votes
1 answer
3k views

Is the A6 module broken?

Hi recently I've could send some messages with the A6 GSM module, which uses AT commands. To switch on the board, you need to press the power button about 4 seconds or connecting the VCC pin to the ...
cpinamtz's user avatar
  • 175
-2 votes
2 answers
306 views

Arduino Pro Mini doesn't automatically reset

I have an issue with my Arduino pro mini. Yesterday, I uploaded a sketch a few times on the pro mini, with an FTDI adapter, and everything worked fine. Today I'm trying to re-upload a sketch, but now, ...
BruceWawe's user avatar