Arduino newsletter

Top new questions this week:

How to connect IR Transmitter and Receiver Module?

The IR Transmitter and Receiver module has both receiver and transmitter in same board. I tired Arduino IR Remote library example to decode Remote signal using below connection. But its not working. ...

ir

asked by Kalaivanan 4 votes answered by st2000 1 vote

Soldering Arduino Pro Mini's disaligned pins

I have a couples of Arduino Pro Minis (original from sparkfun) that have those 4 disaligned pin. Unfortunetely, I need to use 2 of them, A4 and A5, because they are the I2C pins and I want to solder ...

i2c arduino-pro-mini

asked by canadiancyborg 3 votes answered by jwpat7 1 vote

Problem building a smart shopping cart

I'm building a smart shopping cart with Arduino for my final year project. The cart is supposed to be able to follow its user while shopping. I don't know of many feasible indoor positioning systems ...

arduino-uno

asked by Cynthia Owolabi 3 votes answered by canadiancyborg 1 vote

Serial.read() is getting a whole string rather than just a character?

From the arduino documentation, the Serial.read() function is supposed to return a single character at a time from incoming serial messages. So if I program the arduino with the following: #include ...

serial

asked by Alex Eshoo 3 votes answered by canadiancyborg 1 vote

Update variable using buttons

I made a part of code to change the temperature limit for alarm system. On warm days user have to change the temperature limit with buttons and OLED display. The question is: How can the variable ...

button eeprom variables memory

asked by Dimitris 3 votes answered by Dimitris 0 votes

Servo.attach method causing strange issue

I am using the L298N motor driver for a robotics project to control 4 motors. 2 in each input and output terminal. I have this connected to an arduino uno which is powered by about 7-8v from nimh ...

arduino-uno motor servo l298n

asked by Dan Morrison 3 votes

Self made microphone burns Arduino

I'm very new to electrical engineering and I'm trying to read microphone input with Arduino Nano. I've made a separate microphone module (based on this example) and plugged it into Arduino like this: ...

arduino-nano resistor

asked by Benedictus 3 votes answered by Andrew 3 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

Inappropriate ioctl for device

I am using an Arduino Uno and a Mac and trying to upload my code into the board. I tried uploading the program from different computers(MacBook Air and Pro) and I still have this problem. How do I ...

arduino-uno

asked by Dinesh Sekar 6 votes answered by Nick Gammon 6 votes

Can you answer these?

I'm new here. Where to look for documentation for my specific board

sorry if this isn't the done thing. I have a little red space invader shaped board that has an arduino chip on the back from a conference. There is an LCD display and I've just got it to function ...

arduino-pro-micro

asked by Shmink 1 vote

EthernetClient: HTML table isn't being fully populated

I have the following code below for an EthernetClient named client. It is supposed to print a 2 row, 9 column table. The headers are ID and Name and are the first cell in each row. The other columns ...

ethernet

asked by tpm900 1 vote

BASCOM-AVR stk500_2_ReceiveMessage(): timeout: -1

Arduino Uno R3 Windows 10 Bascom AVR The ON is alright. The LED flickers now and then. The RX and TX flickers when I press the program button on Bascom but then disappears almost immediately. ...

arduino-uno avr

asked by AveryRose 1 vote