Part 3 of the hand soldering tutorial. This time Dave shows you how to drag solder and tack & reflow SMD components, and in particular 0.5mm fine pitch IC’s. Including solder paste and hot air.
From Wikipedia, the free encyclopedia
A “cantenna” is also a brand name for a dummy load.
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A cantenna is a directional waveguide antenna for long-range Wi-Fi used to increase the range of (or discover) a wireless network.
1 Origin of the name
4 See also
5 External links
Origin of the name
Cantenna dummy load suitable up to 30 MHz and up to 1 kW
The term ‘Cantenna’ originally referred to a product sold by Heathkit Co. in Benton Harbor, MI, USA. It was a 50-ohm resistive load used by radio amateurs. However, in the more casual vernacular of the Do-It-Yourself community, it has functionally become a portmanteau of can (e.g. an empty Pringles can, see below) and antenna, since they’re used to broadcast (and receive) signals, and not just terminate them.
Although some designs are based on a Pringles potato chip can, in reality this tube is too narrow to be practical., however a cantenna can be made from various cans or tubes of an appropriate diameter. Some designs include a pole mount to elevate the cantenna.
While cantennas are useful for extending a wireless local area network (WLAN), the tiny design makes them ideal for mobile applications such as wardriving. The design of the cantenna is so simple that it is often the first antenna WiFi experimenters learn to build. Cantennas can even be used to increase cell phone range, improve reception and decrease noise.
FON#La_Fontenna, an omnidirectional, cheap and high power antenna to distribute internet access around the world using a series of wireless LAN’s
This video describes Resistor Color Codes and how to read them. It relates Resistor Color Codes to scientific numbers and engineering notation.
This video continues part 1 by showing how a breadboard, also called a protoboard, is used to build electronic circuits without soldering, by guiding the student through 10 steps to build a blinking LED circuit based on the 555 IC timer chip. The circuit also needs 3 resistors, 1k, 4.7k, and 10k. It also requires a 10 uF electrolytic capacitor, an LED, some jumper wires, and a 6-volt battery or power supply.
Uses of Breadboard
A breadboard is used to make up temporary circuits for testing or to try out an idea. No soldering is required so it is easy to change connections and replace components. Parts will not be damaged so they will be available to re-use afterwards.
Almost all the Electronics Club projects started life on a breadboard to check that the circuit worked as intended.
The photograph shows a typical small breadboard which is suitable for beginners building simple circuits with one or two ICs (chips). Larger sizes are available and you may wish to buy one of these to start with.
This video introduces the breadboard, also called a protoboard, used to build electronic circuits without soldering. The first part of this presentation describes the features of a breadboard.
A breadboard (protoboard) is a construction base for a one-of-a-kind electronic circuit, a prototype. In modern times the term is commonly used to refer to a particular type of breadboard, the solderless breadboard (plugboard).
Because the solderless breadboard does not require soldering, it is reusable. This makes it easy to use for creating temporary prototypes and experimenting with circuit design. Older breadboard types did not have this property. A stripboard (veroboard) and similar prototyping printed circuit boards, which are used to build permanent soldered prototypes or one-offs, cannot easily be reused. A variety of electronic systems may be prototyped by using breadboards, from small analog and digital circuits to complete central processing units (CPUs).