UNO R4 wifi PWM, Sense Control of Fan
I have 4 wire 12 V "PC" type fan with Pin Function Wire color 1 GND Black 2 12V Yellow 3 Sense (tach) Green 4 Control (PWM) Blue I am using a relay, operated from one of the pins on the Arduino and...
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Uno r4 minima rx LED is always on
Hello. There is a malfunction in my minima. The day before it broke, it worked very well, no problem. But, the next day I plugged it back in and the rx LED was still on. And when I touched the board,...
View ArticleGrove relay stuttering
I have bought this Grove relay: Grove - Relais | Kiwi Electronics. I use it to drive a low-power water pump with a 9v battery. So the pump circuit is isolated from the Arduino circuit. When the...
View ArticleIncorrect voltage sensor value sent from Slave to Master over I2C
Hello. The point is that I measure a voltage of the battery 6 x AA pack with 25V voltage sensor and send it using I2C from Arduino Leonardo to another Arduino (Uno, Mega). I output my measurements to...
View ArticleScale doesn't calibrate correctly
First of all excuse my english, but I have an Arduino Uno and I'm trying to make a scale, It already works besides the fact that it doesn't make a good calibration. It's connected to a loadcell and I...
View ArticleCreate Agent for Mac OS 10.14.6
Is there a version of the Create Agent which will run on Mac OS 10.14.6 Mojave? It will not run the latest Create Agent 1.3.8 The laptop is quite old but I only use it occasionally. MacBook Pro...
View ArticleArduino Nano Bad USB
I have an Arduino Nano and want to use it as a Bad USB, but I have noticed that the Nano cannot communicate via USB. But I have also heard that it should work with V-USB. Hhat exactly is V-USB and how...
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Storing Arduino boards
Hi guys, how do you guys store your Arduinos? Right now, I have maybe 3 Unos, 3 Megas, 6 Nanos, a mix of ESP32s, sensors etc etc. I want to put them in one of those sewing kit boxes with changeable...
View ArticleDMA for creating a Memory dump of a Windows Computer
Hey, is it possible to use the Arduino Zero DMA controller to create a memory dump of a Windows machine? (Reading out the whole RAM) If yes how would I connect my Arduino to the PC so it could create...
View ArticleHelp with using 1 encoder to set 2 values
I am at the 1st stage of a project where I want to use 1 encoder to set 2 values. I got it working (in a wrong way) in that I can set the 1st value, but when I select to set the 2nd value, it starts...
View ArticleI want to suggest a coding course for elementary school kids( 6+ yeras kids)
As a parent of an 8 year old son, Steve, I personally believe that introducing technology and robotics in elementary ages is a fantastic idea. At this age children easily learn things. It's a fun and...
View ArticleArduino mega pro can pwm work on D0 and D1?
Im encountering problem with pwm on pins 0 and 1 is it even possible ? 4 posts - 3 participants Read full topic
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Using an RF7020 with ATmega328
I am trying to set up an ATmega328 with the RF7020 module so that I can send data from the ATmega to my computer. I have the system working fine when I use the Arduino Uno board, it sends the data...
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LASER DUST SENSOR ---> DLS in water for nano particle measuring?
Hi - I wonder is there anything that can help me to develop Dynamic Light Scattering machine, which can measure and concentration of nano size particles from 0.3-1micron in water ? BOTLAND Grove -...
View ArticleAbnormal behaviour with the SIM800L GSM module
am facing a very weird issue with a SIM800L GSM module. I am working on a project that involves connecting the SIM800L module to the NodeMCU, all of this is powered by a 3.7 V battery. Problem: I have...
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Unleashing the Power of Capacitors: Exploring Single Layer Capacitor Antennas...
Hey Arduino enthusiasts! I'm excited to share some research I've been doing on a potentially game-changing technology for wireless communication: Single Layer Capacitor (SLC) Antennas. What are they?...
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HC-05 disconnecting from Windows 11 and Raspberry Pi 4 B 2 seconds after pairing
I am trying to pair a HC-05 module to a Raspberry pi 4B. Every time I do so the module disconnects 2 seconds later. I have tried multiple power setups within the 5v range with splitting the power to...
View ArticleHow to coding 4 servo motor in 1 proximity sensor? Please I need help
Help me to coding 4 servo motor in 1 proximity sensor 6 posts - 3 participants Read full topic
View ArticleTrying to make a 4*4 with multidimensional array
int led[4][4]={{2,3,4,5},{6,7,8,9}}; void setup() { for(int i = 2; i<=10;i++) { pinMode(i,OUTPUT); } // put your setup code here, to run once: } void loop() { for(int rows = 2; rows <= 5;...
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Atlas Scientific pH probe shows 0.00
Hi everybody, I'm currently working on a project where I want to make my own pool dosage system. I got an used Atlas Scientific pH and ORP kit and tried to get values with the sample code from atlas...
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