Arduino newsletter

Top new questions this week:

ArduinoUNO/MEGA, Is there a way to exceed 256 in analogWrite

I am using Arduino UNO/MEGA, I want to analogWrite(pin, val); where the value is 0-1023. How can I make that ? Thanks.

arduino-uno arduino-mega pwm frequency

asked by Mostafa Khattab 5 votes answered by JRobert 10 votes

How to move my robot in the right direction?

After all there is more question poping up then answers i decide to upload the pdf where is everything writen, like the wire, motor type and what we can and can't use. Here is the link pdf format of ...

arduino-mega pwm servo c

asked by twistedhat 4 votes answered by dpw 3 votes

Replacement crystal on Uno for cold temperatures

I want to run an arduino out in the cold (-40), and use the serial communication - I believe that the crystal is the weakest link (the one for the serial chip) - however I don't see any drop-in ...

arduino-uno electronics system-design oscillator-clock components

asked by user2813274 4 votes

Simultaneous output from sonar array

I am working on a project that records the elevation changes of a 1 foot wide section using sonar distance measurement. I have 10 HC-SR04 sensors arranged in a straight line over this 1 foot section. ...

arduino-uno hc-sr04

asked by user3020394 3 votes answered by dpw 5 votes

Arduino UNO Chinese Clone LEDs not lighting up

Hi all, In the screenshot of a circuit I've included, I'm attempting to light up 4 LEDs off of pin 2. In circuits.io, everything works great. 3 blue LEDs and 1 red LED light up and blink as ...

arduino-uno

asked by Dan 3 votes answered by Gerben 7 votes

Is it possible to use Wi-Fi as a wireless connection to my Arduino/Windows PC LAN without using the internet

My Situation and Problem: I am wanting to put together a system to help monitor the soil moisture content in my garden and a small heated greenhouse I use in the winter. Also, In the near future I ...

wifi

asked by dancingBear 2 votes

Detecting a 2.8ms pulse using a arduino UNO

I am working on a project for knowing the position the of DC motor which has a hall sensor built into it. I am newbie into programming using the arduino uno R3. After some forum search and self ...

untagged

asked by anuzarduino 1 vote answered by Andrey Visochan 2 votes

Greatest hits from previous weeks:

How do I split an incoming string?

I am sending a list of servo positions via the serial connection to the arduino in the following format 1:90&2:80&3:180 Which would be parsed as: servoId : Position & servoId : ...

serial arduino-mega string

asked by ValrikRobot 21 votes answered by jfpoilpret 37 votes

How can I connect to an Arduino using WiFi?

I'm working on building a solar powered, Arduino based weather station. The weather station consists of a temperature sensor and a photoresistor, and I plan to add an anemometer in the future. I would ...

arduino-uno wifi xbee

asked by jlbnjmn 14 votes answered by sachleen 17 votes

Can you answer these?

Send and Read packet xbee AT mode

I have a simple network created using Xbee series 2 devices. My network is very simple, my end-device with Arduino UNO read a temperature and Lightning, display this value into LCD and send using Xbee ...

arduino-uno serial communication xbee

asked by user3836982 1 vote

Looking to understand process of making custom Arduino core for unsupported microcontroller

I am looking into the process of making custom bootloader or a core which would support programming of one microcontroller in Arduino. Kind of what igrr first did for ESP8266 - enabled programming of ...

bootloader

asked by davaradijator 1 vote

How can I reduce speed of motor with motor shield?

I'm using arduino and adafruit to control 4 motors for a little robot. I have this code example: #include <AFMotor.h> AF_DCMotor motor1(1, MOTOR12_1KHZ); // create motor #2, 64KHz pwm ...

motor arduino-motor-shield

asked by anubis 1 vote