How-To

Headless Raspberry Pi using SSH and VNC

Posted by Jack L on

Headless Raspberry Pi using SSH and VNC

When it is not convenient to work directly on the Raspberry Pi or when the Raspberry Pi doesn’t have a display attached to it (known as a headless Raspberry Pi), you can still work on it from another computer remotely. Remote Raspberry Pi Access using SSH (command line) The first option is to connect to the Raspberry Pi over SSH (Secure Shell). SSH allows you to remotely gain access to the command line of a Raspberry Pi from another computer over the network or the internet (if your network is setup for it). SSH only allow command line, not a...

Read more →

CAROBOT Example Codes

Posted by Jack L on

CAROBOT Example Codes

CAROBOT Arduino Discovery Starter Kit (Lite) v3 Example Codes CAROBOT Arduino Discovery Kit (Lite) v2 Example Codes

Read more →

ArduBlock

Posted by Jack L on

ArduBlock

ArduBlock is a programming interface designed to make programming with Arduino easier. Instead of writing code, ArduBlock allows you to visually program with blocks similar to Scratch. ArduBlock is an "add-on" to Arduino. As a result, the Arduino IDE is required. This allow ArduBlock to run on any platform (Windows, Mac, or Linux) because Arduino is multi-platform. Additionally, this allow an easy transition between ArduBlock and Arduino if you want to move from visual programming to text programming. NOTE: As of Arduino 1.6.12, the ArduBlock .jar from their official website no longer works due to a change in the Arduino IDE....

Read more →

HC-05 Bluetooth Module Guide

Posted by Jack L on

HC-05 Bluetooth Module Guide

The HC-05 Bluetooth module (and related modules) is a very popular module for wireless communication due to its price and capabilities. In this article, we’ll talk about how to wire and setup the module for operation with an Arduino board. Wiring Most HC-05 modules require a 5V operating voltage. However, the TX/RX pins work at 3.3V. Although most modules have on-board current limiting circuit which allows the TX/RX pins to work with 5V signal, a 5V to 3.3V circuit (a simple voltage divider) at the Arduino TX pin is recommended. There are a few version of the HC-05 module in the...

Read more →

I²C LCD 16×2 or 20×4 Module Usage Guide

Posted by Jack L on

I²C LCD 16×2 or 20×4 Module Usage Guide

Thank you for purchasing an I²C LCD module from us or just stopping by to find out how to use a generic I²C LCD module. This guide applies to the following I²C LCD module we carry or similar I²C LCD module you can find in the market. 16×2 I²C Character LCD Module (Yellow Backlight 5V) The good thing about I²C LCD module is they only use 2 wires instead of the 6 or more wire required for parallel connection style LCD. Circuit I lied, to connect I²C LCD module, you actually need 4-wires: 5V (VCC), GND, SDA, and SCL, as...

Read more →