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Battery Low Voltage protection with zero power drain if battery is drained
Hello. I would like to realize (on the smallest possible footprint) a low voltage protection for batteries. I am using multiple batteries (usually power tool ones in the range from 12-40V) to power...
View ArticleReading data from inside server.on
Apple Mac OS Firefox 124.0.1 Arduino IDE 2.3.3-nightly-20240328 Arduino Nano ESP32 AsyncTCP AsyncUDP Arduino C++ I am using ESPAsyncWebServer. I went through the library and made a list of Methods and...
View ArticleUsing an MPU6050 to stop a NEMA 17 Stepper Motor if a rapid change in...
Hey! I am using an MPU6050 and want to stop the NEMA 17 Steppermotor when there is any sudden acceleration in any direction - x,y, or z. I am having trouble getting the slope and the resultant to work...
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DHT11 Error Code With Arduino Uno
I don't know how to fix this. It seems like I did it correctly... const int DHT11_PIN = 2; void setup() { Serial.begin(9600); } void loop() { int chk = DHT.read(DHT11_PIN); switch (chk) { case...
View ArticleStuck on upload
avrdude: Version 6.3-20190619 Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/ Copyright (c) 2007-2014 Joerg Wunsch System wide configuration file is...
View ArticleCan't open Arduino IDE 2.3.2
Stuck on starting loading screen with the arduino logo bouncing PS C:\Users\user\AppData\Local\Programs\Arduino IDE> & ".\Arduino IDE" PS C:\Users\user\AppData\Local\Programs\Arduino IDE>...
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Help! Powering Breadboard from Arduino
So I am in Science Olympiad and I am doing a project called robot tour where the robot is autonomous and goes around a track. so anyway I am trying to power a breadboard from the Arduino board. so i...
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Can't get LED to work
I have an arduino micro which I have used previously without issues, but now I can't get an external LED to blink with it. I've used the blink example and switched out the built in led to pin 9...
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FAILED REASON: missing required credentials e.g., database URL, host and tokens
i m beginner i have this code to send temperature and humidity from esp32 to firebase and i got this problem FAILED REASON: missing required credentials e.g., database URL, host and tokens. </...
View ArticleControlling a stepper motor with python
I am attempting to control a stepper motor with python. The commands I am attempting to send are: MN LD3 MR1000 5 V10 D30000 G Here is the code I have: import serial ser = serial.Serial('COM6',9600)...
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How to connect a 24 volts PLC output to L298N motor driver pins IN1 made for...
Hi,I'm using a plc SR3B261BD, that has a 24 volts output, and a L298N motor driver that works at 5volts, I'm using two 24 volts dc motors , that's why I connected a 24 Volts power source (and removed...
View ArticleCharging two 21700s - which module and general advice
Hi, I've got a project which is going to be powered by two 21700s wired in series, and realised I could probably put a charging module inside and usb port on the outside instead of having to remove...
View ArticleOverflow problem when decreasing the void loop delay
my problem is: i have a struct with many variables for reading my sensors which is mpu6050, bmp280 and gps neo-6m. i send this struct to my receptor (lora ebyte e32) with a delay 750ms, but i want at...
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Overflow problem and transmitting two or more struct instead one
i have a few more question that i don't put in my previous problem the overflow problem could be solved cleaned the buffer? i studied datasheet of ebyte E32 and the TX lenght is 58 byte which is the...
View ArticleHow do I connect my esp32 wroom devkit with a bluetooth button?
Hello everyone , I'm new here and I've just started using esp32. I need to connect my esp32 with a bluetooth button (model: Encurtador de Link) so that when the button is pressed, I will send a...
View ArticleGxEPD2 writeImage for 3 colour display in two passes?
I have a b/w/r display (GDEW075Z08) that I would like to render an image to, from a server. Due to the way the images are produced (python pillow, which doesn't support 2bpp bitmaps pillow...
View ArticleNeed help optimizing my Arduino code for memory usage
Hello, I'm working on a project using an Arduino ONE board, an RTC module, a servo motor, and an OLED display. The project involves serving food to pets at specified times. I've written a code that...
View ArticleOverlap a temperature when I click in a specific position
Hi guys I have a code that shows in the tft display 2 temperatures, but when I click in a specific area I want to overlap them separately, but when I click in the specific area the screen refresh and...
View ArticleCerco SW per FLUO WI-FI
Buon giorno a Tutti, Sono appassionato di elettronica dal 1975, nel 1979 ho contribuito ad assemblare a scuola un kit di MMD1, che ho clonato nel 1982 dal 1980 al 1999 ho insegnato prima elettronica e...
View ArticleAttiny85 wireless transmitter using nrf24l01 module
I have an attiny85 microcontroller wireless transmitter to an arduino nano receiver using the wireless module nrf24l01 so this is the sketches and wiring for both i'm using arduino Uno as ISP...
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