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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.

Arduino Pro Mini is a microcontroller board based on the ATmega328. With 14 digital IO pins, 8 are analog inputs, 6 digital pins 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 SparkFun Electronics, however there are many clones out there. It exist both 5V/16MHz and 3.3V/8MHz. It can be used with UART, SPI and I2C.

272 questions
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Corrupted output from HC-05 Bluetooth module

I have arduino Pro Mini 3.3V version with hc-05 module connected to 3.3V/GND and RXI/TX0 pins. I am then using my android phone to connect to the module. It shows up and pairs fine. Then I use BlueTerm app to view the output. I am seeing output that…
DominicM
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Why does this Arduino Pro Mini use a capacitor on the DTR reset line?

I'm kind of curious as to why there is a 0.1uF capacitor on this Arduino Pro Mini (https://www.arduino.cc/en/uploads/Main/Arduino-Pro-Mini-schematic.pdf). It seems like it would work just fine without it.
Izzo
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Arduino Pro Mini is burned by 12v. Can I save it?

I have this Arduino Pro Mini clone (ATmega328) 5v. I gave it exactly 12 volts through the RAW power input, but it instantly got hot and started fuming. Fumes were coming out of the area close to the black S4 thingy. I don't know why, because I…
Sergio
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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 Arduino ground, it works. Aren't all ground the same?…
maomaopop
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Arduino Pro Mini doesn't align nor connect in fritzing

When using fritzing (0.9.6) I notice that the Arduino Pro Mini 3.3 V component doesn't align nor connect to breadboard pins like other components. Is this a bug or a feature? I've tried to wiggle the board/component, disable/enable 'Align to Grid',…
maxschlepzig
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How to use a 4-pin ultrasonic sensor as a 3-pin ping sensor?

const int pingPin = A0; void loop() { long duration, inches, cm; pinMode(pingpin, OUTPUT); digitalWrite(pingPin, LOW); delayMicroseconds(2); digitalWrite(pingPin, HIGH); delayMicroseconds(5); digitalWrite(pingPin, LOW); …
ramireddy rachana
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Blew my arduino pro mini s4 named component

While working on my project I supplied 12v to my pro mini through raw input and then a s4 named component smoked and my pro mini stopped working . It didn't turn on either through vcc or raw. The voltage regulator seems completely fine. Can I…
Garvit Goyal
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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 requires the board's fqbn and I can't find it…
Michele Cioccarelli
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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 upload again (I changed the timing on the blink)…
Gary Quiring
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Sketch works on Arduino nano but not Pro Mini

I have a simple test sketch to run for my led aquarium: #include #include IRsend irsend; void setup() { } void loop() { irsend.sendNEC(0xF7C03F, 32); delay (2000); } I am using a 850nm Infrared LED and a 330Ohm…
GreenXL
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Short battery life concern with Arduino Pro Mini

I am using an Arduino Pro Mini with a L293D H-bridge driver to drive a bi-directional motor. The system takes input from a capacitive sensor which is constantly looking for a trigger. I don't have any low power optimization in the code. I was using…
Niloy Talukder
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Did I overheat my Arduino while soldering to perfboard?

So this is the second time that I've had a circuit that worked perfectly on a breadboard, but as soon as I connected it to a perfboard and soldered the joints together, the Arduino stopped working and wouldn't let me upload sketches (though I could…
auphynne
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How to load program into Arduino pro mini using FTDI cable?

Do we need a ftdi basic board to connect a ftdi 232R USB - TTL serial level converter cable via a 6 pin 0.1" male header into an Arduino pro mini/ nano 328 to upload the sketch?
Rebekah
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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?
John K
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How do I make a atmega 32u4 mp3 player?

Is there a way to use the atmega 32u4 breakout board to make a mp3 player without the mp3 shield?
urw7RSeeh8FR
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