Build a Solar Panel - The 9 Essential Items You Must Have!

Where to Find Solar Cells

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Depending on what size solar panel you are going to build, will dictate how many solar cells you are going to need. The cheapest way to get cells is either from eBay or find a local firm who uses solar cells in their equipment. There are many companies who use solar cells to power road signs, their signs suffer from wear and tear and are chucked in the skip. The good news is that the cells work fine and just need a bit of TLC.

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Plywood - 15mm Thickness

The plywood is the main part of the construction of your solar panel. Get a good sheet of flat plywood and cut it to size. We will be treating the plywood later to make sure it doesn't rot when left outside to the elements.

Soft or Preferably Hard Wood

If you get a piece of 2"x1" and cut a rebate this will make a good frame to keep the flexible-glass in place. Hardwood is best but whatever wood you get, we will protect it with UV paint.

Flexi-Glass

Flexi- glass is used to protect the solar cells and all the electrical wiring. Some people like to use special glass that has the ability to collect infrared light. This is expensive but it will make your solar panel more efficient as the infrared feature will allow you to convert the suns energy in cloudy conditions.

Soldering Wire - Tabbing Wire

This soldering wire enables you to connect the various solar cells together and so make a complete solar panel. The tabbing or soldering wire is manufactured from tin and has a very melting point.

Silicone

Silicon is used to make the solar panel water tight by filling the gap between the flexi glass and the wooden frame. It is also used to hold the cells in place.

Solder

The solar cells are joined to the copper wire using solder. The copper wires carry the current, which the solar cells have produced, to either an inverter, or batteries or to the grid. Sometimes the tabbing wire lifts of the backing board or cell, you can use the solder to stick it back down again.

Soldering Flux

A flux pen is used to assist the tabbing wire to stick to the cells. You run the pen over the area where you want the wire to be assembled and then with the aid of a soldering iron, the tabbing wire is secured in position.

UV Wood Protector

To give your solar panel assembly as longer life as possible, it is recommended that the frame which holds the flexible-glass in place and the plywood be given a coating of UV protection.

Volt Meter

The volt meter is used to test each cells output as it is assembled to the board. The output increases as you add more solar cells.

Build a Solar Panel - The 9 Essential Items You Must Have!

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Special Price!!! Weller WD1002 85w/120v Digital Soldering Station with WP80 Pencil

Oct 31, 2011 12:37:34

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Weller WD1002 85w/120v Digital Soldering Station with WP80 Pencil Feature

Modern LCD technology gives the user critical information at a glance
3 programmable temperature preset buttons allowing quick and easy temperature changes
Programmable features such as temperature standby, lockout, set-back, and offset
°F/°C switching which allows the unit to either read temperatures in °F or °C
Comes with WP80 (80w) soldering pencil and stand (WDH10)

Weller WD1002 85w/120v Digital Soldering Station with WP80 Pencil Overview

New design features: 3 programmable independent fixed temperature buttons allow you to preset temperature settings Large, easy-to-read high contrast LCD display Program setback time and temperature to your specification Programmable lockout window range so you can restrict temperature settings within a pre-determined range Programmable temperature offset and auto-shutoff to preserve tip-life WP80 soldering pencil delivers 80 watts of power and includes a special silver heating element for low thermal loss and fast recovery. Ideal for continuous production soldering. Uses LT Series Tips (sold separately). Iron Stand Features: 3 storage openings for tips, and 4-step tilt adjustment ranging 30° - 80°; Anti-static finish. WD1002 Single Channel Station w/WP80 80 Watt Pencil & Stand

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Weller 7135W Replacement Soldering Gun Tip

Special Price!!! Weller 7135W Replacement Soldering Gun Tip

Oct 30, 2011 09:12:22

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Weller 7135W Replacement Soldering Gun Tip Feature

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Weller 7135W Replacement Soldering Gun Tip Overview

Fits Tool(s): 8200, 9200
Tip Style: Standard
Tip Width O/D: .165 in./4.19 mm
Reach/Length: .885 in./22.48 mm

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How To Clean Gel Flux Residue From a Circuit Board After Hand Soldering a Quad Flat Pack

This article describes how to clean gel flux residue from a circuit board after hand soldering a quad flat pack component. The process involves full immersion cleaning, which means fully submersing the board into solvent while brushing in order to dislodge and dissolve as much of the flux residue as possible.

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Start by putting on some "powder free latex gloves" to protect your hands. Also make sure that you are wearing safety glasses and that your work area is reasonably well ventilated.

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Place the board on the bench. No solvents are used at this stage. I call this step "dry wiping". Get a small brush, such as a horse hair or small parts cleaning brush and simply run the brush along each edge to remove the bulk of the flux residue.

Wipe the brush on a tissue to get the flux residue off of the brush. The objective is just to remove the bulk of the flux residue before the full immersion cleaning process.

Next, place your circuit board into a plastic container with some methylated spirits (or "metho").

The plastic container can be a lunch box, a food container or an empty ice cream container. Choose the size of the container depending on how big your circuit boards are and how many you want to put in to wash or soak at one time.

Ensure that there is enough metho in the container to fully immerse the board, including the components.

Then simply brush around the edge of the chip where the flux residue is. Continue to brush around until it looks like most of the flux residue has come off.

Take the board out of the metho to get an idea of how you are going.

Blow off the metho with compressed air (a nozzle, moisture separator, air hose and air compressor). The compressed air also helps to dislodge the residue, especially some of the residue sitting behind the chip legs.

At this stage you will be able to see how much of the flux residue is left on the board. Put the board back into the metho and do some more brushing.

Take the board out again and blow off the metho and residue with the compressed air. Again, you will be able to see how much residue is left. The residue will look like a think sticky film. Put the board back in and give it another go.

Keep going until you are satisfied that you have removed as much of the flux residue as possible. You don't have to worry is there is a little bit of flux residue left on the board because the gel flux used is "no-clean" type, which is inert and non-corrosive.

That completes this article. We covered how to clean gel flux residue from a circuit board, including "dry brushing", full immersion cleaning, using compressed air to blow off solvent and dislodge residue, and inspection.

How To Clean Gel Flux Residue From a Circuit Board After Hand Soldering a Quad Flat Pack

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Special Price!!! Weller W60P 60Watts/120V Controlled Output Soldering Iron

Oct 29, 2011 10:52:45

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Weller W60P 60Watts/120V Controlled Output Soldering Iron Feature

Controlled output soldering iron
Uses Weller "closed loop" method of controlling maximum tip temperature
Stainless steel modular plug-in heater for greater efficiency and versatility
Portable line voltage iron - no base station required
Made in Mexico

Weller W60P 60Watts/120V Controlled Output Soldering Iron Overview

W60P NONE: NONE (part# W60P) This item features: -Line voltage high quality portable tool controlled output and temperature. -Weller ''closed loop'' method of controlling max tip temperature, protecting temperature sensitive components. -Iron features stainless steel modular plug-in heater construction, greater soldering efficiency. -2-wire cord. -3-wire cord. -Operating Temp.: 700 F. -Voltage: 120.00 VAC. -Frequency: 50.0 Hz, 60.0 Hz. -Power Consumption: 60.000 W. -Tip Type: Screwdriver. -Tip Size: 1/16 in. -Tip Material: Copper. -Tip Finish: Iron-Nickel-Chrome. -Body Material: Stainless Steel. -Price is for 1 Each. Testing and approvals: -CUL listed. -UL listed.

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Weller 7250W Replacement Soldering Gun Tip

Special Price!!! Weller 7250W Replacement Soldering Gun Tip

Oct 28, 2011 11:58:15

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Weller 7250W Replacement Soldering Gun Tip Feature

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Weller 7250W Replacement Soldering Gun Tip Overview

2-Pack

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How To Make A Long Distance Listening Device

Before I begin I'd like to say that the information I am about to provide is for educational purposes, and should not be used for evil. If you want to make one... use at your own risk.

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Planting a bug isn't the only way to spy on folks or get intelligence. Besides, planting a bug is risky- they can be easily found and you'd have to first gain access to the area in question to plant it. But not with a laser listening device! Every component is right there with you in spy headquarters!

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Here's the simple break down before I continue. The setup involves a laser, a receiver, and a glass window. The laser fires at the window, reflects, hits the receiver and is transformed into sound waves for you to hear.

* A good quality laser pointer
* A cadmium sulfide photocell (can be found at electronics shops or online)
* An old pair of headphones
* A soldering iron and solder
* A mini tripod
* Tape
* Scissors
* A computer (laptop preferably)
* Audio software (something nice and free like Audacity

OK, here goes. The first thing you need to do is understand the science behind this awesome device. When you speak in a room with a closed window, your voice creates vibrations that will move the glass. If you were to point a laser at the glass, the little back and forth motions of the glass will affect the time it takes reflected light to reach it's destination. The cadmium sulfide photocell, which is very sensitive to infrared light, is the destination. When you modify the photocell, the differences in the time it takes the laser to return are detected. Then the differences are turned into sound.

So cut off the head piece of the old headphones (you just want the cord and jack). Strip off the end of the cord and you should see three (3) wires. Strip the ends off the wires. Get your cadmium sulfide photocell ready (it should have two (2) wires coming out of it). Get the soldering iron up to temperature and carefully solder two of the headphone wires to one of the photocell wires and solder the remaining headphone wire to the other photocell wire.

Now here's the tricky part. Tape the button of the laser pointer down and attach it to the tripod. Now position the tripod so that the laser hits the window in question. Plug the headphone jack into the computer and open up the audio software. Adjust the tripod and determine the angle of reflection (you may have to get your photocell/headphone wire to another room to catch the reflection). Move the photocell so that it is hit by the laser (you may have to tape it in place) Begin recording!

Now the recording is likely going to be quite noisy. Weather may scramble the received laser. Also any other things in the room that could cause vibrations on the glass may distort audio. Audacity has the capability to remove some noise from audio recordings, so you just may be able to get a conversation!!

How To Make A Long Distance Listening Device

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Special Price!!! Weller D650 Industrial Soldering Gun

Oct 27, 2011 11:22:40

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Weller D650 Industrial Soldering Gun Feature

Dual-heat gun produces 300 or 200-Watt
Nickel-plated copper secondary, heat resistant-thermoplastic housing
Heavy duty grounded cord
2-Wire cord.
UL and cull listed.

Weller D650 Industrial Soldering Gun Overview

650

Industrial Duty Soldering Gun

300/200 Watt
Nickel-Plated Copper Tip

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Choosing the Right Soldering Iron for Electronics Work

Dan, one of my Facebook buddies, wrote to me asking about choosing a soldering iron:

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"Quick question... I'm looking for a new soldering iron. would you recommend anything under 40 dollars without a soldering station? I'm getting tired of my RadioShack 45 watt iron with the screw on tips (and having to use a bench grinder everyday to clean the tips)."

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I've been asked this question quite a bit, so I thought it was time to put something together explaining about soldering irons, flux and tinning.

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The first thing I would recommend is getting an adjustable temperature soldering iron, and get used to setting the correct temperature for the different types of parts you are working with - hotter for larger gauge, and cooler for thinner, finer work. I typically work in the 325F to 400F range. I've been using the Velleman LAB1U, it has a built in multi-meter and power supply. These can be a bit pricey, so check out the Weller brand - sometimes they go on sale for around . I would avoid the Cold Heat soldering irons - they are unsuitable for delicate electronics, as are the big soldering "gun" type irons.

I used to use quite large gauge solder and tips, but just recently (after doing a lot of surface-mount work) switched to 1/32″ tip and 0.32″ diameter solder. This allows for much finer control with less overspill.

My soldering iron has a built in "damp sponge" to clean off excess solder inbetween uses. In the past I have used regular paper towels to do the same job, but a dedicated sponge with a circular hole cut in the middle really works best.

Helping Hands
The next thing I wouldn't be without is are some "Helping Hands" - these are pairs of crocodile clips that can be used to hold the workpiece while you concentrate on the soldering. this is really important, as it won't be long before you realise that you need 4 hands to solder things.

Even better than helping hands is a:

Bench Vice/Vise
I bought one of these 2 years ago and it's proven to be invaluable. The brand I use is "PanaVise" and they come with a range of bases and options - Fry's carries them, and they are available online. You can put the whole PCB you are working on into the vice, insert the components and then just flip it over to solder.

Flux Pen
Rosin Flux is a substance that encourages the solder to flow. If you find that you are having trouble getting a good solder joint then it's probably because the heat transfer isn't working correctly, or the components are dirty. Applying some solder flux to the joint area will really help - I've been using a flux pen for years and wouldn't want to be without one. An alternative is flux paste - like toothpaste it comes in a tube and can be applied with the fingers.

Tip Tinner and Cleaner
When you first fit a new soldering iron tip it will be bright, shiny and very difficult to work with. The solder will not stick to it and so you cannot "tin" the tip properly. Some people will use fine sandpaper to break in a new tip but I prefer to dip the new tip into some RadioShack "Tip Tinner and Cleaner". This starts the process nicely. It's also a good idea to dip the soldering iron after you are finished, and before you switch off. I find that it really helps to prevent the tip from wearing out prematurely.

Fume extractor
If you do a lot of soldering, then you need to get something installed on your bench to divert the fumes away from your face. It's not recommended to breath in solder fumes at all. I use a small fan, but a proper extractor is a very good idea.

Wire Cutters
The final piece of essential equipment is a pair of sharp, flat bottomed wire cutters. These are used to trim off excess component wire (the "leg") after soldering. The flat bottom is important to get the cut as close to the PCB as possible. Don't go too cheap with these, I paid about for mine.

That just about covers the basics of soldering, I would also think about getting a loupe (magnifier), some solder wick and solder "sucker" for removal, wire strippers and isopropyl alcohol and an old toothbrush for flux removal.

Very soon I'll put together a series of articles on soldering technique - covering basic through-hole assembly, and the more advanced surface-mount technology.

Choosing the Right Soldering Iron for Electronics Work

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Special Price!!! Weller WP25 Professional 25Watts/120V Soldering Iron

Oct 26, 2011 10:28:44

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Weller WP25 Professional 25Watts/120V Soldering Iron Feature

Professional soldering iron ideal for a wide variety of electronic tasks
Tip Temperature is 750° F
Quick change knurled collar with stainless steel barrel
Cushion grip handle and plug-in heating element
Made in Mexico

Weller WP25 Professional 25Watts/120V Soldering Iron Overview

WP25 Model Code: AA (part# WP25) This item features: -Used ST series long life double-coated iron-plated tips. -Quick change knurled collar. -Stainless steel barrel. -Light blue with cushion grip handle and plug-in heating element. -6' 3-wire cord. -IMPORTANT: Use only Weller tips. Use of non-Weller component causes damage to the unit. -Voltage: 120.00 VAC. -Tip Type: Screwdriver. -Tip Material: Copper. -Tip Finish: Iron-Nickel-Chrome. -Price is for 1 Each. Testing and approvals: -CUL listed. -UL listed. Model Code Model Description AAOperating Temp.:750 F [Max], Power Consumption:25.000 W, Length:7 7/8 in ABOperating Temp.:800 F [Max], Power Consumption:30.000 W, Length:8 7/8 in ACOperating Temp.:800 F [Max], Power Consumption:35.000 W, Length:9 7/8 in

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Electronic Circuit Boards - Breadboard, 'Veroboard' and the 'PCB'

When you try to build a robot for the first time, you have to be an expert in electronics, mechanical and programming. Today, let us talk about or delve into the field of electronics. Did you know there is a subject called Field Theory, studied by Electronics undergraduates? Now, just for laughs, Field Theory is often called as Failed Theory. Yes, as scary as they sound, they are actually fine, these electronics when you can see them straight in the eye.

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I believe many people think electronics is such a tough field because things are not so concrete at first. Power, current, voltage are things that cannot be seen by the naked eye, but yet very real. They do exist and serve us in somehow, invisible ways.

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First, get to know what are the functions for each of the electronic parts. Be it the wire, transistor, resistor, capacitor, batteries, and so on. It is like building a castle. To build one, you will need every brick to support the huge castle. Just like life, it takes many experiences to excel.

Second, once you know about them, it is time to burn them. What I mean by this is, most electronic projects require assembling a particular board. This is due to electronics nature. Remember when I had told you about building castles? Well, in this case, burning is referred to soldering of the electronic components.

Only then, you will practice the skills applied in soldering and how to speed up. You will also go through what many electricians go through the first time they dive into this field.

Electronic Circuit Boards - Breadboard, 'Veroboard' and the 'PCB'

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Special Price!!! Desoldering Wick

Oct 24, 2011 22:14:42

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Desoldering Wick Feature

Solder removal braid removes solder from all types of connections
5ft. roll in handy dispenser

Desoldering Wick Overview

Desoldering wick

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Make a Solder Free Stained Glass Box

Solder free stained glass boxes are fun to make. You can make these boxes to hold jewelry, mementos, or anything else you want. Their size can be customized to your need or space. In just an hour, you can make one of theses boxes.

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To make a square or rectangular box, cut a piece of glass or mirror for the bottom of the box. The size of this piece will be the size of the box you want to make. To cut the sides of the box, first determine how deep you want the box. Then cut 2 pieces of glass that is the same length as the glass you cut for your bottom piece by the height you desire. Then cut 2 more pieces, the width of the bottom piece minus 1/4 inch (the thickness of the glass times 2) and by the same height you cut the other two pieces. The last 2 pieces you need to cut is for the top of the box. Using the bottom glass for you pattern, cut one piece of glass that is 1/2 inch bigger on all four sides and one piece that is 1/4 inch smaller on all four sides.

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Once all your pieces are cut, lightly grind all the edges. Then clean and dry all the pieces and you are ready to assemble your box. To assemble box, you will need Weldbond glass glue. It is strong and it dries clear.

Using a thin line of glue on the edges of the side glass and attach them to the outer surface perimeter of your bottom piece. Do this one piece at a time. If excess glue squeezes out, use a damp q-tip to wipe off excess. Once all four sides of your box are glued, set it aside to dry. To make the top of your box, center the smaller top piece on the larger top piece. Use only a few small dots of glue to adhere these two pieces together. Let all pieces thoroughly dry (24-48 hours).

To embellish the top of your box, you can attach glass nuggets or whatever else you would like.

Make a Solder Free Stained Glass Box

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Special Price!!! Grip Tools 55133 LED Helping Hand w/Soldering Iron Holder

Oct 23, 2011 20:03:22

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Grip Tools 55133 LED Helping Hand w/Soldering Iron Holder Feature

Ideal for precision work
Perfect for computer boards/ jewelery/ arts crafts
Built in LED Lights
2 1/2" Magnifier
2 alligator clips

Grip Tools 55133 LED Helping Hand w/Soldering Iron Holder Overview

Need a hand? The Grip Tools LED Helping Hand work station provides the assistance you need, any time.

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Hobby Electronics Robot Kits

Robotics has become part of our daily lives. From toys to home appliances, it has taken over the problematic mechanisms of the amenities that we grew accustomed to. Aside from that, robotics provides challenging activities where we can develop important skills. It can even help us sharpen our research, critical thinking and problem solving skills by honing our mechanical, electronic and software capabilities. It can be a form of are since it allows us to build useful objects from simple parts. With the use of hobby electronics robot kits, we can explore, fix and put components together and learn much more about robotics.

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Hobby electronics robot kits are provided to help us hone our skills by doing simple to complicated repairs and modifications on robot components. For instance, we can use these kits in assembling or fixing damaged toy robots. Although the task is quite challenging, it will be a lot easier if you have the right kits. Often, robot toys are designed to roll, walk or climb around your house. Depending on the design configurations of the kit that you choose, you can either make the toy have a built-in brain or remote controlled operations. Either way, going through the process of assembly or conversion will be fun as the kit provides everything you need to get the job done.

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There are actually a number of kinds of hobby electronics robot kits, which are fitted for specific uses. For example, programmable robotic kits provide experienced technicians and engineers or even hobbyists with tools that are usually applied on robotic research. For high school and college projects, this type of kits very helpful in deeply involving the students in the efforts of mastering important mechanics, electronics and software development skills. On the other hand, BEAM robot kits are ideally used in using ingenious robotic designs since they are not fitted to work with an external power and do not involve programming. Just like in other tool kits, soldering components is common among robot kits since soldering is essential in the assembly of robotic components.

At the rate by which robotics continuously develops, more and more children as well as adults have been amazed by its wonders. Its applications have significantly improved our way of living. A classic example is the robotic dog. If you happen to be allergic to the real animal, then a robotic animal pet can be an exciting option. Voice activated appliances are now brought to the homes of millions of Americans. As they are simulated to do certain tasks with a specific command prompt, the problems that are faced when preparing and cooking food, cleaning the house or washing clothes will be things of the past. If you can't afford a robot yet, then you can start small. Make robotics part of your hobby and build a prototype of your own. By having the right hobby electronics robot kits, you can easily assemble, repair or modify problematic robotic parts and be an engineer at your own right.

Hobby Electronics Robot Kits

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Special Price!!! Weller SP120 120 Watt Soldering Iron

Oct 22, 2011 20:27:38

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Weller SP120 120 Watt Soldering Iron Feature

Heavy duty iron that develops 900 degrees F.
Stainless steel barrel and heat and impact resistant handle .
Solder iron rest included.

Weller SP120 120 Watt Soldering Iron Overview

SP120 Model Code: AA - Price is for 1 Each (part# SP120) This item features: -Fine quality consumer mini iron. -Lightweight and pencil thin. -Replaceable nickel-plated copper tip. -Stainless steel barrel. -Heat and impact resistant handle. -IMPORTANT: Use only Weller tips. Use of non-Weller component causes damage to the unit. -Operating Temp.: 900 F. -Voltage: 120.00 VAC. -Tip Type: Chisel. -Tip Material: Copper. -Body Material: Stainless Steel. Testing and approvals: -CUL listed. -UL listed. Model Code Model Description AAPower Consumption:120.000 W, Tip Size:1/2 in, Tip Finish:Iron, Length:11 3/8 in, Applications:Hobby Work, Stained Glass ABPower Consumption:175.000 W, Tip Size:5/8 in, Tip Finish:Iron, Length:12 1/2 in, Applications:Sheet Metal ACPower Consumption:40.000 W, Tip Size:1/4 in, Tip Finish:Nickel, Length:8 1/4 in, Applications:Hobby Work ADPower Consumption:80.000 W, Tip Size:3/8 in, Tip Finish:Iron, Length:9 3/4 in, Applications:Hobby Work, Stained Glass

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Weller SP120 120 Watt Soldering Iron

Special Price!!! Weller SP120 120 Watt Soldering Iron

Oct 21, 2011 16:20:45

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Weller SP120 120 Watt Soldering Iron Feature

Heavy duty iron that develops 900 degrees F.
Stainless steel barrel and heat and impact resistant handle .
Solder iron rest included.

Weller SP120 120 Watt Soldering Iron Overview

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Weller WEL8200PK 120-Volt 140/100 Watts Universal Soldering Gun Kit

Special Price!!! Weller WEL8200PK 120-Volt 140/100 Watts Universal Soldering Gun Kit

Oct 19, 2011 08:03:39

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Weller WEL8200PK 120-Volt 140/100 Watts Universal Soldering Gun Kit Feature

All-Purpose, 120V Soldering Gun
Dual-Heat Gun Produces 140W Or 100W With Pistol Grip Design
Fingertip Trigger Selects High Or Low Output
Ready To Use In 6 Sec
High-Efficiency, Tin-Plated Copper Tip

Weller WEL8200PK 120-Volt 140/100 Watts Universal Soldering Gun Kit Overview

Type: Single
Wattage: 140 W/100 W
Temperature Range: 1020° F/900° F
Cord Length: 6 ft.

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Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations

Special Price!!! Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations

Oct 18, 2011 06:30:37

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Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations Feature

Extremely short heat-up time
Changing soldering tips is quick and easy and requires no tools
Chrome plated aluminum pencil weights just 75g
Just 45mm tip-to-grip, so you're close to the work
Tip has integral comfort grips for "no-tool" tip change

Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations Overview

Product Features: Made of aluminum with chrome plating and weighs just 75g The "tip to grip" distance is 45mm, placing you close to the work The pencil has a Reed switch to give you auto-off capability RT Series Tips sold separately

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Available In Stock.

This Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations ships for FREE with Super Saver Shipping.

Price : Click to Check Update Prices Please.

Limited Offer Today!! Weller WMRP 40W/12V Micro Soldering Pencil for WD1M and WD2M Soldering and Rework Stations Black Friday and Cyber Monday Deals

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