- Connect button (for my case PA.10 pin is used as input and connected to one button's pin and another pin is connected to 3.3V pin)- (optional) Connect button's LED or separate LED (for my case PA.14 pin is connected to LED's + terminal...
Solder 4 Red/Green LED's to a project board.Run ~300Ohm resistor to ground pin on all 4 LED's. (Center pin is common on these LED's)Wire Green side to PIN 2,3,4,5 of UNOWire Red side to PIN 6,7,8,9 of UNOGround resistors.
Create two MQTT accounts or streams, on a website such as data.sparkfun.com. One stream should correspond to each KiT device. For example, for communication from Alice and Bob, Alice's KiT should be set to read from Bob's stream and publish to Alice's...
You might need to try another module if it's not working too well. Send a SMS (there's plenty of pages on the web about how). You'll likely get bored quickly with SMS so now let's have some fun
Make sure to go through the program carefully to understand how it works, later it will be fun to tweak it and make your own modifications./* * Arduino program to control a model train running in a basic oval loop with the help of a feedback sensor....
Connect the dongle’s Tx directly to the Arduino’s Rx(Pin 0).Connect the dongle’s Rx to the Arduino’s Tx (pin 1).You can add a voltage divider to reduce the voltage going to the dongle’s Rx pin because Arduino sends 5V whereas Dongle uses only 3.3 V.It...