Popular ICs. (A collection of all of these IC's is available here) "2x or 4x, etc.
" means that there are multiple identical circuits that can be used within the same IC package.Words with a small Upward Green Arrow are Clickable inks Like This to more information.Most ICs have a printed or embossed DOT or MARK on their case that shows the location of Pin 1, or the end of the IC that has pin 1 (See LM324 and LM386 below).Pins are numbered CounterClockWise from pin 1 as seen from the top. (Aside: WHY CounterClockwise? Water Tank Depth Sensor. Water is a precious resource in many parts of the world, and many people rely on water tanks to supplement their water supply by storing collected rainwater or water pumped from a well or bore.
But how do you measure how full a tank is? Tanks are constructed of opaque material to prevent algae growth and often kept closed up to prevent mosquito infestation or access by small rodents so it's inconvenient to physically look inside. And besides, having a way to measure tank depth electronically opens up a world of possibilities such as automatic control of pumps to top up tanks when they get low or to disable irrigation systems when not enough water is available.
The obvious way to measure tank depth is by placing a series of conductive pickups at various heights inside the tank and measure the resistance between them. This project works a little differently. GarageLab (arduino, electronics, robotics, hacking) - #42.
Code. Solar. PushingBox - Notifications in the cloud. Router. MiniArduino. A credit card sized Ethernet Arduino compatable controller board. For the curious, this is the schematic diagram of my simple Ethernet board.
As you can see, there are a number of exposed header connectors that can be used to connect peripheral devices to. The board is powered with a supply of between 7 and 12v. It contains voltage regulators to provide +5v and +3.3v for the Ethernet controller. There is also a 4 position DIP switch that can be used to allow programmed functions to be modified. Adding a light sensor - SquidBee. Arduino Home. YourDuino.