All Questions
226
questions
0
votes
0
answers
29
views
Problems with OCR1B on Atmega328p
Trying to control 4 servos (SG90) using 4 pots on an arduino nano and the one connected to OC1B keeps having problems, with bits of jittering and it just not moving correctly (occasionally spinning), ...
- 3
0
votes
2
answers
68
views
Extended IO registers handling in AVR using Assembly language
I want to program the ADC module of arduino Mega2560 using Assembly language (for simulation and learning),
I can initialise the ADC Module using Assembly and my program converts in the first ...
- 1,020
1
vote
1
answer
49
views
Manipulating EEPROM in AVR using assembly programming
In the following video(at 10min):
https://www.youtube.com/watch?v=YELGX5XDCiY&list=PLgwJf8NK-2e55CdbY_WnY6pejPHoojCkJ&index=18
The microcontroller used in the video series is ATmega32.
Let's ...
- 1,020
0
votes
1
answer
82
views
ATTiny85 won't reprogram
I am using a tiny AVR programmer to program code specifically this one, https://www.amazon.com/dp/B00B6KNJRY?psc=1&ref=ppx_yo2ov_dt_b_product_details , I can successfully upload code onto a blank ...
- 13
0
votes
1
answer
52
views
How to make a circuit which can give divided voltage to ADC and can send a trigger pulse to INT0 when I press a button?
I connected 4 buttons to the ADC module of AVR-ATMega328p with different resistor values,
To know which button is pressed this ...
- 45
0
votes
0
answers
251
views
ESP32 UART TX slow response rate
I`m having issue with UART communication between AVR and ESP32. Issue is with TX response rate.
Here is what I`m sending with AVR, first 2 bytes are command, last 3 are data:
...
- 51
3
votes
0
answers
69
views
Minimum circuitry for robust operation of the "new" ATtinys (1614) with Optiboot
I have spent hours now trying to catch up on the replacements for the old ATtiny's, there does not seem to be a robust (meaning, with protections that we could find in an UNO or Mega for example) ...
- 115
0
votes
1
answer
104
views
Audio processing from Arduino
The project is to design a device with multiple audio inputs and multiple audio outputs. The device should be capable to map input and output audio channels. Output almost same as the input. At what ...
- 11
0
votes
1
answer
110
views
Is there a way send pulses over a DC line?
more details :
we have 12V dc & we have master mcu board supply voltage to other slave mcu board the length of 12v dc cable between two boards can reach 50 meters so what is suggestion communicate ...
- 9
0
votes
3
answers
346
views
Generate a signal with 8 fixed-width pulse with varying interval
I am working on an ultrasound device. We want to generate a particular signal to drive the 1 MHz piezoelectric transducer at various resonance frequencies point.
The goal is to write a code using ...
0
votes
2
answers
427
views
AVR reset pin capacitor causes chip to enter bootloader on powerup
I have a circuit using an ATmega32U4 and am using the Arduino Leonardo/Micro Caterina bootloader (the one that comes with arduinoIDE v1.8.13). The problem I am having is on power-up (via USB ...
- 191
3
votes
2
answers
512
views
The function setup () executes after ATmega328P wake up from the sleep mode
I am using ATmega328P in deep-sleep mode in Arduino IDE.
For wake up I am using PCINT. I can see it is working but setup () also executes after wakeup.
Is it ...
1
vote
1
answer
203
views
Missing 1 bit shift Bitbang I2C Atmega328p
I implement bit-banging I2C on Atmega328P and met the problem when the Master receives data from the slave. I'm in depression in debugging this code since I found no problem. Master Write work ...
- 33
0
votes
1
answer
143
views
Uncertain of 8-bit vs 32-bit alternatives to AVR32 [closed]
I was browsing a distributor to find options for simple 8-bit and 32-bit RISC uCs and came across AVR32. After some searching on the web, it seems that AVR32 is a bit dated and possibly not a good ...
- 5
0
votes
1
answer
836
views
temp1:12:3: error: 'DDRA' was not declared in this scope DDRA = 0x00; /* Make ADC port as input */
Trying to upload code on atmega328 to display temp but throws me this error :
temp1:12:3: error: 'DDRA' was not declared in this scope
DDRA = 0x00; /* Make ADC port as input */
^~~~
Here's ...
