Frequently asked questions
There’s a couple of reasons why you might be getting this message:
1. Incorrect wiring: double check all the wirings. Because the sensor package has ...
Sun, 17 Sep, 2017 at 6:37 PM
Yes, there are several addresses that are reserved for special purposes. The following table lists those addresses (table sourced from https://www.i2c-b...
Fri, 6 Oct, 2017 at 8:28 PM
F() is a macro that instructs the compiler to store the string (an array of character bytes) that is passed as a parameter to the MC's flash memory inst...
Sun, 12 Nov, 2017 at 10:31 AM
The I2C backpack for LCD displays is a very convenient way to add a character display to your project. The LCD display with the 1602 controller is proba...
Wed, 22 Nov, 2017 at 12:44 PM
The short answer is, none. When you use the analogRead function, “0” and “A0” refer to the same pin, the analog pin 0. So, when you use analogRead, ...
Mon, 27 Nov, 2017 at 1:16 PM
If you are using the Arduino Mega and you are learning the basics of the Arduino, then you are most likely following a tutorial (like my own Arduino Step by...
Mon, 27 Nov, 2017 at 12:59 PM
A question I get asked frequently by people new to circuit design is about pull-up and pull down resistors. What is the purpose of a pull-up or pull down r...
Mon, 27 Nov, 2017 at 1:19 PM
In the context of AVR micro-controllers, and the Atmega family in particular, Timers and Timer interrupts is a topic that is often puzzles makers. Alth...
Mon, 27 Nov, 2017 at 1:26 PM
With the Arduino and a breadboard, we use male-male jumper wires. These are wires with a pin sticking out at its two ends. It looks like this: They...
Fri, 1 Dec, 2017 at 12:14 PM
As the name suggests, a photoresistor is a variable resistor. The resistance of this device changes as the light intensity that hits it changes. This ma...
Mon, 11 Dec, 2017 at 11:49 AM