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 Dat Ha 0 votes

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

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

Can Atmel Studio 6 Simulator simulate SPI?

I am trying to do PAL composite video output with Arduino Nano. I am using Atmel Studio 6, not the Arduino IDE. I am sending out the picture data via SPI. On the TV I could not see the text I tried to ...

atmel-studio

asked by szali 3 votes

Using Arduino as Keylogger

Is it possible to use arduino uno r3 as USB keylogger by connecting the usb male pin to CPU and keybord cable to female USB pin of arduino. So that the keystrokes are stored in EEPROM. Without using ...

eeprom datalogging

asked by Ganesh 2 votes answered by Gerben 0 votes

Greatest hits from previous weeks:

How to communicate the Arduino board with SIM900?

I have a problem. I bought a SIM900 board, but I can not connect there with the Arduino. To send AT commands on the serial the SIM900 doesn't respond, but the LED indicating that the network is on. ...

gsm

asked by Avelino 1 vote answered by Avelino 1 vote

Sensor for underground water tank level

In a similar way to the question "best way to determine if a 5 gallon water jug is getting empty", I'm looking for a way to measure water in a container. This is so it can be connected to an Arduino ...

sensors

asked by Rob Hoare 10 votes answered by Cybergibbons 10 votes

Can you answer these?

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

ESP-12f SoftwareSerial read fails

I am trying to use esp8266 version of SoftwareSerial, espsoftwareserial, on an esp-12f. If I initialize an object using: SoftwareSerial gpsSer(14,12, false, 256); or SoftwareSerial ...

esp8266 softwareserial

asked by epgibbons 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