Arduino newsletter

Top new questions this week:

Using SPI without driving MISO

I am developing an application where an Arduino Pro Mini communicates with a 12-bit ADC over SPI. The communication is one-way, meaning that the ADC will only send data back to the Arduino, not ...

spi adc

asked by Fulcrum 5 votes

All of the sudden the Nano will not accept programming

I have been working merrily along with CH340 to make Com10 work. It has been working flawlessly but now I am getting various messages like it can't open the port then the programmer is not ...

arduino-nano usb

asked by Archway 3 votes answered by Archway 1 vote

How to connect an arduino Micro to MPU-6050

So I'm trying to connect my arduino micro to the MPU 6050. I was using this tutorial https://diyhacking.com/arduino-mpu-6050-imu-sensor-tutorial/ This tutorial worked with my arduino Uno but not ...

arduino-ide arduino-micro mpu6050

asked by Eduardo Cunha 3 votes answered by Dat Ha 0 votes

How to display an entire incoming string from the serial monitor in arduino ide?

this is my first question in this forum. I need to receive a string from the Arduino serial monitor and display it when the communication is over. I have a similar problem like the one discussed in ...

arduino-uno serial arduino-ide

asked by Daniel Maydana 3 votes answered by Dat Ha 0 votes

The Mysterious Case of the Mostly-Vegetable Servo

Story: I was playing around with my Uno along with a servo. To my stupidity (or more appropriately: ignorance), I set the voltage to my servo with analogWrite(), rather than servo.write(). It worked ...

arduino-uno programming servo

asked by Sir Jony 3 votes answered by Dat Ha 1 vote

Mini Voice Recorder for Arduino

I am trying to find a small voice recorder that I can use with my Arduino Micro, and I found this. It is exactly what I am looking for, but it is now a retired product. I googled ISD1932, but many ...

sensors arduino-micro audio sound

asked by Cello Guy 3 votes answered by yabbadabba 0 votes

The use of 4.7kOhm resistor with DS18B20 temperature sensor

I was using a temperature sensor DS18B20 with Arduino. I've read that you should connect the digital input line and the 5V line with a 4.7kOhm resistor - like in the picture. Can someone explain ...

sensors temperature-sensor

asked by Camille 3 votes answered by jose can u c 5 votes

Greatest hits from previous weeks:

Why is my LCD 16*2 is not displaying any characters, although all the wiring is correct?

Recently I have linked up a typical 16*2 LCD (Liquid Crystal Display) display to my Arduino Uno and have linked all the pins up. Here is my connection:(LCD pin first) 1=GND, 2=+5v, 4=11, 6=12, 11=5, ...

arduino-uno programming pins lcd

asked by Stratmoss 2 votes answered by PhillyNJ 5 votes

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 36 votes

Can you answer these?

Ethernet module ENC28C60 doesn't connect to internet when DHCP on router is disabled.

Update: Examples from library are working if DHCP is enabled! Using this library I try to connect with static IP but it always say DNS failed. Ethernet module is blinking that means is good ...

arduino-mega library ethernet

asked by Dimitris 1 vote

Odd symbols in ESP8266 responses to AT commands

I used the code below to control an ESP8266. I am getting some unknown symbols in the responses. #include <SoftwareSerial.h> const byte rxPin=2; const byte txPin=3; SoftwareSerial ESP8266( ...

arduino-uno serial esp8266 softwareserial

asked by Aishwarya k 1 vote

How to reprogram Arduino if USB port is already in use?

I'm developing a keyboard emulator using Digispark Pro (based on Arduino) which uses USB port as the keyboard interface. I haven't programmed it yet because I doubt how should I recognize the chip to ...

usb programming keyboard

asked by joware 1 vote