Newest Questions
24,999 questions
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Why does my stepper motor have jerky motion with DRV8825 microstepping?
I’m using a NEMA 17 stepper motor (model 42SHDC3030Z-23WB-1 / 17HS4401S) with a DRV8825 driver with small radiator and an ESP32. Even when set to 1/16 microstepping, the motor motion is very jerky.
It ...
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1
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HC-12 receives garbage, but the garbage is consistent
I'm playing with two HC-12 wireless communication modules. After setting AT+FU4, I tested the modules, but the communication appeared to be unreliable in one direction. I tried to simplify the code as ...
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Arduino Nano ESP32 with Firebase: program crashes randomly [closed]
I’m using Arduino Nano Esp32 board to collect data from an analogic sensor and update a Firebase database. The application works fine, but I noticed that after about 10 minutes, the board doesn’t send ...
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Information about PWM frequency
Previously, the reference page for the analogWrite function showed the PWM frequencies for different pins on different Arduino boards, but now it doesn't mention it anywhere... Where is this ...
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37
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Send uint32_t over i2c from attiny85 slave to atmega328p master
I run into an issue with querying a uint32_t with an atmega328p master from an attiny85 master.
I have put both codes below.
I did run the equivalent code for just sending a uint8_t and all works ...
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Book for embedded systems study as a professional [closed]
Which books are suitable for studying embedded systems, contain easy language and do not require another person? I can use that for self study. Do not have the option to do masters in embedded systems....
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enum class not in scope but auto works
I'm writing a program to display leds that sequentially light up in one direction until the last led at which point the process reverses. I'm using an OOP approch for practice. Below is my code in its ...
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Career in Embedded Systems [closed]
Can anyone please suggest books for studying embedded systems which is easy language and do not need any professor or another person. I can use that for self study. Do not have the option to do ...
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1
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71
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Connecting the device to Arduino via the UART protocol [closed]
The essence of the task
I have a task to connect an external device with my arduino and transfer data to each other via the UART protocol. The external device has 4 pins (Two for power supply and RS-...
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93
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problem with scripts in Arduino Lab for MicroPython
I am trying to set up an Arduino Nano ESP32 so that I can code in MicroPython. I successfully installed Arduino Lab for MicroPython and flashed the firmware onto the device, but when I try to run the ...
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68
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Cannot get Arduino Nano with CH340 chip to keep working
I have a bunch of Arduino Nano boards with the CH340 chip. When I want to upload code to a board, it sometimes works the first time, sometimes it doesn't. Afterwards, it mostly doesn't work anymore.
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64
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ASync Timer2 based OSCCAL value
How to calibrate the internal RC oscillator off of a 32768 Hz crystal serving Timer2?
void OSCCAL_calibrate(void) //This version specific to ATmegaXX8 (tested with ATmega328)
{
unsigned char ...
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40
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Cannot ping a host unless I use parseIP from Ethercard
I'm trying to write an Arduino sketch which pings multiple hosts and switches some RGB LEDs to indicate the status of the devices on my network. This question is a followup of ParseIP in the EtherCard ...
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After an USB disconnect the program I've uploaded to the Arduino Mega 2560 doesn't work properly anymore, why?
For a race simulator I'm using several Arduino Mega 2560 boards on which the code that will post below will be running. (not my code! But freely available on the internet)
Everything works fine, just ...
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Why are there silver strips around the voltage regulator on an Ethernet 2 shield? [migrated]
The following image is a crop of an Ethernet 2 shield. It shows the 1117 voltage regulator soldered to 'something'.
Typically these are soldered to a copper pad, with /without vias to other copper ...
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