Over the weekend something happened that baffled me: I beat my boyfriend at a game of chess. My first words after “I won?” were “Did you let me win?” Because really, we’ve been playing a couple games of chess a week for about 8 months now and I’ve lost every single one of them. Until this weekend. (Small cheer.) We than played Trivial Pursuit and he mopped the board with me but that’s ok … I won at chess. You know what this tells me? All the weeks of him teaching me the rules and pitfalls, pointing out better move choices, guiding me towards the strategy, might finally be starting to sink in. I’m learning. I love learning. You know what else I love to learn? How things work.
So let’s start looking at how some electronics work.
Today we’re going to look at the buttons on a keyfob enclosure. You see these types of buttons everywhere: calculators, keyless remotes for your car, the television remote. There is a rubber keypad with a conductive contact on the back. When the button is pressed, the conductive contact meets the board, sending an electronic signal to complete the specific task assigned to that circuit.
For a really simple example, in a calculator, pressing the button labeled “1” indicates the number one, the button labeled “+” signals the circuit to add, pressing “3” and finally “equals” tells the computer to add the indicated numbers.
Similarly with a keyless entry remote, pressing the button labeled “unlock” activates the circuit on the board to send a wireless signal to the system’s receiver, located in the vehicle, that the electric locks should be opened. Pop. Keyless entry.
Polycase has an entire line of keyring style remotes that are available in several sizes, styles, and colors. We can even print directly on the buttons of the Keyfobs to customize them for your project. Need help narrowing down the selection? Our customer service representatives are here to help. Contact one today.
Tell me about your electrical project and how it works. Drop me a comment, I’m listening.