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Is Serial.println() (using hardware serial port) is a blocking function?
I am using hardware serial port for sending text streams to a BLE device. Assume that the serial buffer is totally empty, and I sent some text stream of size 48 bytes to the hardware serial port. Now,...
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TinyGPS++ and SD Card File Problems on Arduino Uno
I am trying to use an Arduino Uno with a Sparkfun GPS Logger Shield (and an SD Card inside), two BME280 temp/humidity/pres sensors, an LSM9DS1 IMU, and two analog sensors. I previously used the...
View ArticleUART Interface, TMC2208 and Arduino Nano
Hi All, I'm trying to run a NEMA17 stepper motor at a low constant speed and need maximum torque from the stepper engine. Currently, the stepper motor is running with the wanted rpm, however, it seems...
View ArticleWeact 1.54 Epapaer
HI guys... I am trying to load a bitmap image on Weact 1.54" epaper display. I found a sample for text..but I don't find any for bitmap So I tryed to edit this: but I receive this error Compilation...
View ArticleADMUX register oddity
I'm developing a very simple application for the ATTiny85, which uses ADC channel 2. If I set the ADMUX register with ADMUX = (1<<REFS2)|(1<<REFS1)|(1<<0x2); it works fine. But if I...
View ArticleESP8266 with a GPS module (such as the popular NEO-6M) and a BMP280 sensor,...
#include <ESP8266WiFi.h> #include <WiFiClient.h> #include <ESP8266WebServer.h> #include <TinyGPS++.h> #include <Wire.h> #include <Adafruit_Sensor.h> #include...
View ArticleTrying to control a pump with only a button
My skills are ranging from begginer to intermediate. Im using a one button library in this code to use the button as a switch what im trying to do is when i press the button it should execute the code...
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Is my water sensor waterproof (able to submerge)?
So i made a water detector project and i wondered what happens if i submerge it in a pool but first i tried with a large cup of water and everything was fine. I'm not really sure if it can handle...
View ArticleATMega2560 not accessible by USBasp
Ok, I was playing around trying to extract the flash from my arduino mega2560 with a USBasp. I was using the eXtreme Burner - AVR to extract it and it was reading the flash, but somehow the mega2560...
View ArticleOne button library - isIdle not triggering after sleep
Hello, I've built myself an electrified coffee grinder. The intended operation is as follows - No on/off switch, just sleep. Wake up with one button click, another one click for grinding a...
View ArticlePlease, Where Is Vcc located on
...SimCom A7670G? The board is extremely tiny, and I see Vin but no Vcc. Can I use Vin for my 10v 2a adapter, or is Vcc somewhere on the board that I have overlooked? I tried contacting SimCom, but no...
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Amplifier for IR signal
Hello electronic specialists, this "problem" has been addressed already two times here in the forum one time in nilskilz thread: Amplifying IR LED with Transistor and then in Cessna172's thread: IR...
View ArticleHow to measure ac current using arduino
How to measure 220 Vac current using arduino and current range 0-5 amps 4 posts - 3 participants Read full topic
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SX1278 Lora Module and Neo 6m gps failing to work together on Arduino uno
Hello engineers, may you kindly assist. When i connect both the GPS module (Neo 6M) and the LoRa module (SX1278) to the Arduino Uno, the LoRa module fails to initialize. However, when I connect only...
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Photo transistor
hello there. i want to ask if anyone knows what is the type (code) of phototransistor of the starter kit of arduino? thanks a lot!! 1 post - 1 participant Read full topic
View ArticleTrying to find TLP281-4 4 Channel optoIsolator IC for Fritzing part
I have a project that uses 3 of the 4 Channel OptoIsolator IC's and I am trying to draw up the project in Fritzing. I can not however find a TPL281-4 IC. I'm not good enough yet to create a new part...
View ArticleCH32V003 - Analogwrite()
First thanks to the people there has made it possible to have the WCH (CH32V003xxx) processors as part of Arduino IDE. Fantastic $0.10 processor. I have tried to use analogwrite() for dimming a led,...
View ArticleQR Code Reader ESP
Hello guys, I'm new to this, especially working with ESP modules. I bought an ESP32 with a camera, my wish is to make a QR code reader that, after reading the QR code, will send the data to the server...
View ArticleCommunication Issue between Arduino and Python Script in Jupyter Notebook
Problem Statement: I am facing difficulties establishing communication between my Arduino board and a Python script running in Jupyter Notebook. The Arduino board responds correctly when communicating...
View ArticleArduino nano 33 ble connection with ios device
hello! i was just wondering if anyone could share how they create/generate UUIDs for arduino's BLE protocols? i used a random UUID generator to create the UUIDs for my service and read and write...
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