An LCD screen can bring a whole new level of interactivity to your Arduino projects. They can provide instant data without using your computer and give visual feedback about your project. Normally, you would use a separate breadboard to hook up an LCD but using a MakerShield and this tutorial from Make: Projects, you can make your own LCD shield!
LCD screens look complicated but using an Arduino it’s not too bad at all. This tutorial will teach you how to hook up an LCD display to an Arduino using a MakerShield. All the components you need for this build are included in the Ultimate Microcontroller Pack.
CircuitLab is a handy online sketchboard for designing, simulating and sharing of electronic schematics. CircuitLab is a perfect online tool for rapidly testing circuit ideas before you start breadboarding. CircuitLab also hosts your circuits and provides a convenient image and link that you can use to share your circuit on online forums or your own website, so you can contribute to or get help from the hobbyist community. An easy wire mode lets you connect elements with fewer clicks and less frustration. It also allows you to test and simulate your circuits without leaving your browser. CircuitLab also offers advanced simulation capabilities which include frequency-domain (small signal) simulation, stepping circuit parameters through a range, arbitrary Laplace transfer function blocks, and much more.
A really useful tool for every maker and a handy tool within education and for students.