These seven segment displays are managed by an extra Arduino embedded in them. As a result, far less wiring and code is required for your project, since it is all encapsulated in this nice package. Here is the finished project:
This is a tutorial on how to build a clock display using only an Arduino, a Shift Register, and 4 digit seven segment display.
This is a longer range version of the GP2Y0D810 Infrared Sensor. They’re about 15$, and work fairly well for distances between 0.5 meters and 1.5 meters. It is important to note that the distance to voltage curve is not linear. So, if you want the real distance, measured in mm, you’ll need to…
The Arduino IDE has a lot of nice features. It’s so easy, it’s really one of the main reasons why you would choose to buy an Arduino over other options. It can be annoying sometimes though. If you want to distance yourself from the IDE, but still like the Arduino plaform, it’s really as easy as…
When you use delay or delayMicroseconds in Arduino, nothing else can happen until the delay is finished, which can be a huge problem if you have more than one thing going on simulteneously, as will always be the case when building a more advanced robot.
Infrared sensors are a form of distance sensors. They tend to be more susceptible to inaccuracies. This is because they send out infrared light and wait for the light to tell distance. Certain colors, especially black, absorb some of the infrared light and may return a false reading.
The HC-SR04 distance sensor is an ultrasonic sensor that is used for distance measurements.
Parallax’s Ping))) sensor is an ultrasonic sensor that is used for distance measurements.
XBees are a very simple way to enable wireless communication. Using wireless communication will expand the possibilities of a project, and is practically a necessity for a robot.
It is possible to chain Arduinos together in such a way as to get communication between the two. Having Arduino-Arduino communication can be useful for many projects, such as having one Arduino to run motors and having another sense the surroundings and then relay commands to the other Arduino.…
