Questions tagged [atmega328]
The ATMega328 is the chip that is the heart of the Arduino Uno. It is popular also as a chip to use to create your own board. Since it is available in the through hole version, it can be placed on a breadboard easily for circuits.
79
questions with no upvoted or accepted answers
3
votes
1
answer
140
views
Connecting nRf24L01 to Atmega328PU with external 8Mhz Crystal problem
I am trying to fix the problem of communicating between two nRf24l01+ together, one connected to Arduino Uno and another connected to Atmega328PU with 8Mhz external crystal.
The bootloader on ...
- 41
3
votes
0
answers
682
views
Is it possible to put ATtiny85 to sleep while using TinywireS?
I have an arduino uno as the master I2C device talking to an ATtiny85 as the slave.
What I want to do is have the Attiny85 receive a message from the UNO to tell it to power off which will then ...
- 165
3
votes
1
answer
3k
views
Atmega328P-PU: Programmer is not responding
Few days ago, I built my own custom Arduino on the breadboard. It is built according to tutorial on http://www.crash-bang.com/resource/breadboard-arduino/. The Atmega328P-PU is already burned with the ...
- 131
2
votes
0
answers
342
views
Why can't an Arduino/ATmega328 act as an SPI slave at anywhere approaching the maximum speed claimed in the datasheet?
The ATmega328 datasheet claims a maximum SPI slave speed of Fosc/4. For a chip clocked at 20MHz, that would be 5Mbps.
However, my tests show that even with no processing whatsoever in the interrupt (...
2
votes
0
answers
181
views
Stand alone Atmega328p-au
I'm trying to make a standalone arduino board with an OLED display using an Atmega328p. I never tried to make such a board using SMD components. I've soldered everything together except the OLED ...
- 29
2
votes
0
answers
539
views
Still getting "stk500_recv(): programmer is not responding" while uploading to bare ATmega328P
SOLVED! See bottom.
I know this question has been asked a lot (believe me, I've been Googling for solutions for 3 days, and have come across many posts on SE), but none of the posts I've found have ...
- 21
2
votes
0
answers
163
views
Start VL53l0X measurement failed
The initialization of the ToF fails with this code. I'm trying to frankenstein it with Radiohead RFM69, so far no luck.
// rf69_reliable_datagram_client.pde
// -*- mode: C++ -*-
// Example sketch ...
- 21
2
votes
0
answers
515
views
Clear Timer on Compare or CTC in ATmega328P, Toggle OC0A on Compare Match
I want to use the CTC on the ATmega328P to play same notes with a speaker, a project that I find in this book.
In the data sheet I read:
For generating a waveform output in CTC mode, the OC0A ...
- 43
2
votes
0
answers
957
views
Cannot upload to otherwise working bootloaded ATmega328P via RS232: "programmer is not responding"
I have an ATmega328P on a breadboard with the following circuitry around it:
The ISP is a Tiny AVR Programmer. The RS232 to USB converter is this thing.
Following is the test program I use:
void ...
- 151
2
votes
0
answers
1k
views
PWM output maximum current
i made a project with arduino in wich I used arduino to activate 18 n-ch mosfet with PWM. I used the softPWM library to use PWM in 18 output pins, I used a nano v3.
The question is about the maximum ...
- 131
2
votes
0
answers
279
views
Garbage when listening to serial
This is the atmega328p code that is supposed to send a predefined message repeatedly.
#include <avr/io.h>
#include <util/delay.h>
#define BAUD 9600
#define BAUD_PRESCALLER (((F_CPU / (...
- 133
2
votes
0
answers
78
views
Standalone atmega328
I have a transistor tester with 16x2 LCD running a plug-in at328 with an 8Mhz xtal. I would like to use this hardware for another purpose.
My first idea was to replace the crystal with a 16Mhz one, ...
- 21
2
votes
0
answers
209
views
ATMega328 not able to fully switch coreless motor on
I'm having trouble regarding motor control in a project I'm working on.
It uses an ATMega328 DIP package on a PCB. The motors I'm using are small coreless motors and I'm trying to control them using ...
- 66
2
votes
0
answers
477
views
How to use the timer to generate a pulse wave of the specified frequency and duty cycle
So we have the tone library, which produces a 50% duty cycle square wave of varying frequency, and analogWrite() which produces a fixed frequency wave of varying duty cycle. Is there any way to ...
- 308
2
votes
0
answers
34
views
Atmega328 xbee and softaware serial libraries
I use an atmega328 with fdti cable wired at rx/tx and i want to connect a zigbee s2 at diferrent pins. I have tried to use SoftwareSerial library but i would like to use the xbee library too. Is ...
- 21
2
votes
0
answers
36
views
Lightblue Bean BTLE tinkering
How does one modify the Bluetooth settings, like services or pincode, on a light blue bean?
Ps I'm on Android
http://legacy.punchthrough.com/bean/ if you don't know what I'm talking about
- 358
2
votes
0
answers
339
views
Can't program bareduino. "avrdude: stk500_recv(): programmer is not responding"
I've built a bareduino. The blink sketch that it came preprogrammed with worked. I was also able to program the ATmega328 by putting it into a arduino uno.
What I can't do is upload a sketch directly....
- 425
2
votes
0
answers
538
views
SIM 900 stop after 1'5 hours; what's wrong?
I have a Gboard module (from Itead) configured to recieve data from Xbee sensors, and log data to a server DB on inet (via GPRS). This module is programmed with Arduino IDE.
I turn on the module (...
2
votes
0
answers
1k
views
Unexpected Timer Conflicts (Uno)
I've been working on a project (Arduino Uno: Atmega328) that implements a gyroscope (which is used with the LSM9DS0 spark-fun library) that is communicated with through I2C and uses a Servo library. ...
- 153
2
votes
0
answers
1k
views
Several XBee End devices sending simultaneously; Only one packet recieved on coordinator
I'm trying to configure a Zigbee sensor network. My "gateway (coordinator)" and "End devices" are made with XBeePro S2B model and configured in API mode "2". The "gateway (coordinator)" also has a ...
2
votes
0
answers
2k
views
Serial.prints ignored
I've been working on a project where I want to transmit data from one arduino to another using an Xbee network and then parse it to update some PWM outputs accordingly (Building a system which ...
- 63
1
vote
0
answers
28
views
Mirroring PWM input on a pin + Motor Encoder
I am interested in hooking up a nano to an RC receiver. I want the nano to mirror the PWM input and output on another pin when a specific command is given via serial. I also want to send the received ...
- 161
1
vote
0
answers
34
views
Atmega328P constantly restarting when defining a function
I wanted to make a simple led on/off program using USART interface. When the code doesn't have any functions other than main it runs fine, however Arduino keeps resetting when one is included. At this ...
- 19
1
vote
0
answers
177
views
Is it possible to use Nano with mblock and oldbootler?
I've old Nanos that to program (upload) with Arduino IDE I have to select "ATMEGA328P Old Bootloader". The programming is via the standard Nano USB cable, and I need the CH340 driver under ...
- 11
1
vote
0
answers
86
views
ATmega 328 Bootloaded, but Cannot Upload
I have been working on a project that I program using the ATMEGA 328p inserted into an Arduino Uno, and then remove it to put it on my breadboard. I now have realized how inadvisable this is, since I ...
- 11
1
vote
0
answers
146
views
the buzzer stops sounding after a few seconds
Sorry, I'm not fluent in English.
I beg your help
I made an arduino uno project where the buzzer only turns on for 2 seconds after the light turns on. Even though the light is still on I want the ...
- 11
1
vote
0
answers
44
views
Reprogram By Address: Arduino Node Array
Let me just start off by saying that this is the first time I've attempted a project at this scale. I'm not sure that I'm even taking the right approach on this.
I'm attempting a project inspired by ...
1
vote
0
answers
92
views
Why does this piece of code overflow at 255?
Im having a problem where i got unsinged long variable and i need to increment it in eeprom everytime setup starts and it overflows at 255 back to 0.
unsigned long NumberOfBoots = 0UL;
#define ...
- 11
1
vote
0
answers
53
views
Help with understanding fuses for an embedded AVR project
I am planning to build a project, but it's something quite embedded and I have no need for the extra features or bootloader of a standard Arduino. At the same time, I think I want to use the ATmega ...
user47164
1
vote
0
answers
34
views
Receiving code between atmega328P (C) and Feather m0 (Arduino)
I've tried to create a receiver code for receiving my data (really only want the ac/gy values and nothing else) and use the following main code for sending via C programming: https://github.com/...
- 125
1
vote
0
answers
193
views
Error message while trying to burn bootloader onto atmega 328p
I have tried to burn bootloader onto an atmega 328p chip onto a breadboard using another arduino uno , I am not using an external clock but I am doing all the steps to make this thing which are given ...
1
vote
0
answers
50
views
Arduino code crashing
I am writing an SIM900A + arduino(Arduino UNO with Atmega 328P) code to just send the current time stamp every 20 minutes.
The code keeps crashing in the SendMessage() function as the setup prints ...
- 11
1
vote
0
answers
155
views
Cannot program ATMEGA328PU after burning bootloader with internal clock
I have build a couple of boards that have an ATMEGA328P-AU (the 32 pin MLF, as used on the Arduino Pro Mini). If I burn a bootloader via SPI to use an external 8MHz clock, I can then use the Arduino ...
- 111
1
vote
0
answers
53
views
SD card initialize and fails when date changed
i am making a project using Arduino Uno that display data on 7 seg display which stored in SD card as day by day. when i make power ON to device then SD card initialization done & data shows ...
- 11
1
vote
0
answers
346
views
IRremote sending only works once with Arduino Nano
I am trying to control a receiver, wich is not working. I believe i have to send the code at least three times... but after the first time the IR Led stays off. I am using the Arduino Nano with the ...
1
vote
0
answers
243
views
Trying to use a gyro sensor and having issues
My setup is Arduino Mega.
I have a gyro sensor that I'm trying to use to measure the acceleration or G force in X axis (forward movement).
So far I'm trying to figure a way to use the value of Acc or ...
- 11
1
vote
1
answer
140
views
Difference between FreeRTOS libary (AVR_ATmega328PB_Xplained_mini_GCC) Versus FreeRTOS compatible for Arduino boards from Richard barrey
I am researching about different IoT development boards and found that espressif uses IDF framework. When looked at the source code it uses FreeRTOS libraries. I have Arduino Uno and i wanted to use ...
- 21
1
vote
0
answers
264
views
device signature 0x000000 when burning bootloader
I receive this message: "device signature 0x000000" when a try to burn the bootloader on a atmega328p-au (SMD) inserted on PCB
i am using arduino uno as isp i already uploaded the ArduinoISP ...
- 21
1
vote
0
answers
55
views
Automatic water pump Trigger System - I need my code FIXED
int out = LED_BUILTIN;
int strt = 3;
int stp = 9;
void setup() {
pinMode(out,OUTPUT);
pinMode(strt,INPUT);
pinMode(stp,INPUT);
}
void loop() {
while(true) {
if(digitalRead(strt) == LOW) ...
- 11
1
vote
0
answers
140
views
How can I program my self made Arduino board using USB to TTL converter?
Recently I got a coupon for JLCPCB which was 100% discount so, I designed my 10 Arduino board specially for my needs and ordered it from JLC PCB. The schematic of the board is given. At the time ...
- 111
1
vote
0
answers
364
views
Arduino Wont Run Program at 4 Mhz
I want my Arduino Nano to consume as little power as possible, so I have been lowering the clock frequency with CLKPR from the default 16 MhZ speed. I successfully ran the program at 8 Mhz by setting ...
- 205
1
vote
0
answers
121
views
Warm Atmega328p and weird power behaviour
I recently built a circuit with an atmega328p (which I have never used before standalone) and attached all the neccessary components (crystal, capacitors etc). However, when I powered it up with a ...
- 11
1
vote
0
answers
44
views
Why am I only seeing 1.3V on an analog pin that has been set to high using digitalWrite?
I have run into a bit of trouble with a sewable electronics project. I am trying to power a SparkFun 7-Segment Serial Display from one of the analog ports of a ATmega328 board. I realize this is ...
1
vote
0
answers
37
views
generating signal of 3 phase UPS PWM by SVM
Is there a realization code for 3-phase UPS inverter by Arduino? I need implementation for SVM by voltage and current feedback.
- 11
1
vote
0
answers
428
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 ...
- 61
1
vote
0
answers
148
views
Problem with counting inside INT0 ISR while in PowerDown
The issue that I have is in INT0 service in which it doesn't perform properly when MCU is set in PowerDown mode. I declared a global variable as "counter" and put it inside INT0 ISR but its value ...
- 13
1
vote
0
answers
598
views
NRF24L01 based project freezes for no good reason
I have built and coded a low power NRF24L01 transmitter and receiver, for purposes of transmitting the temperature of the transmitter's environment. I have used an Atmega328P chip for the project. The ...
- 11
1
vote
0
answers
188
views
How to burn a bootloader to non-bootloaded(clean crystal) ATMEGA328P-PU with USBASP programmer via Avrdudess?
I'm trying to burn bootloader to my clean crystals, atmega328p-pu.For this I use the 16MHZ crystal with two ceramic capacitors and USBASP programmer, on Windows 10 Pro. As program for burning I tried: ...
- 11
1
vote
0
answers
1k
views
Arduino nano with 128x64px OLED freezing
I have an arduino nano, MCP3424 i2C ADC and a 128x64px i2C OLED display. The function is quite basic; the arduino receives information from the ADC and prints it to the screen as described in the code ...
- 33
1
vote
0
answers
57
views
AVR program upload overrides unrelated program area
I develope a new bus system (uartbus) which includes a host application that can handle new program uploads throught the bus.
How it's work in short: The host application flashed to the AVR. This ...
- 183