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Daily Archives: December 2, 2016

Maker-First Steps in Electronics-Soldering Learning-Electronics Art

Maker-First Steps in Electronics-Soldering Learning-Electronics Art

. Electronic-Arts: JOHNNY the ski-man .


Maker-First Steps in Electronics-Soldering Learning

When WE start with electronics on the beginning we can work with so-called “Breadboards“(see photo below please), but soon or later soldering will become a MUST and an habit! SO, the BEST WE can do is to GET some PracTICE with soldering; in this tutorial we will make a bit “Electronics-Art“. WE will use already known electronic components such as resistors, stripboard parts (we will need to saw and rasp…),  a LED and an IC (Integrated Circuit), a NEW component. OUR project will ONLY serve as soldering PracTICE as there will be NO function of the electronic used, SO the IC could be ALSO a damaged one (useful recycling) 😉

breadboard-1

Breadboard: Click image please to enlarge

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Learn more:

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resistors-watts

Please click image to access the article for more information.

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As YOU might have seen in the image of “JOHNNY the ski-man“, some resistors are BIGGER then others! WHY and what is its meaning!? Well, WE have to go back to “OHM’s Law“, as BIGGER resistors in size are, as MORE POWER they can dissipate; I used 1/2 Watt and 1 Watt resistors. Please check below.

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Learn more:

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Parts List of the components used

parts-list-electronic-arts

Click image to enlarge please.

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The following components are required:

Six (6) resistors of 1/2 Watt, two (2) resistors of 1 Watt, one (1) IC (14 or 16 pins), one (1) LED, two (2) diodes (1N4007), some colored rigid wire for the scarf, 1 mm² rigid copper cable wire and 1 mm silver wire.

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Tools needed.

tools-list-electronic-arts

Click image please to enlarge.

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The following tools are required:

Vise, rasp, solder iron and solder wire, electronic cutter, electronic flat-nosed pliers, small handsaw and don’t forget the vacuum cleaner for cleaning up the working place later, please 😉

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Learn more:

 


Where to start? The mechanical part

sawing the stripboard

Click image please to enlarge.

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WE will start with the hardest part of the job, the skis. The skis are made of a small part of a stripboard which has to be sawn; we count four (4) holes and saw along the strips there, see pic. The length would be about 5 cm ( +/- 2 inches).

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ski detail

Click image please to enlarge.

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Once the two (2) pieces of the stripboard sawn they must get rasped to look smooth. See pic please.

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Skis detail

Click image please to enlarge.

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As the stripboard pieces are rectangular on the edges they must get rounded as well with the rasp, see pic details please.

Solder together now the three rows on the top of the stripboard as shown in image, this will give a bit weight to keep the balance once the other electronic components are soldered.

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The soldering

Soldering order details

Click image please to enlarge.

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SO, the hardest job is done now! UP to solder the electronic components, but where to start!? Start first with the soldering of the diode (1N4007) on both skis, followed by soldering the small resistors, check pic please.

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A little exercise: WHAT are the values in OHM (Ω) of the resistors used (check pic, please)? Hint: if YOU don’t remember how the code is working, check here <===> http://www.allaboutcircuits.com/textbook/reference/chpt-2/resistor-color-codes/ <===> and/or here for an online calculator <===> http://www.allaboutcircuits.com/tools/resistor-color-code-calculator/.

BTW: for OUR project it doesn’t matter which value the resistors have as they are used ONLY for the soldering PracTICE..

Concerning the PracTICE about soldering check <===> https://www.kemo-electronic.de/en/loetkurs.php?page=1 <===> A GREAT step-by-step guide.

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Hint: For THOSE who can’t wait for NEXT tutorial, have a look on my proposed links in this tutorial and YOU will find more 😉

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Check out ALSO, please, my my other blog posts about Maker, MakerED, MakerSpaces:

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The finished project

SO, that’s it folks!  Wishing YOU some fun with this project and hopefully you will get more interested about electronics 😉 Check the video below please to see OUR STAR in action… BTW: The “Mini BUG Robot” present in the video will get proposed ALSO in another tutorial…

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GUST-AVRIL2014-800px-2L’auteur Gust MEES est Formateur andragogique / pédagogique TIC, membre du “Comité Conseil” de “Luxembourg Safer Internet” (LuSI), appelé maintenant BEESECURE, partenaire officiel (consultant) du Ministère de l’éducation au Luxembourg du projet  ”MySecureIT“, partenaire officiel du Ministère du Commerce au Luxembourg du projet ”CASES” (Cyberworld Awareness and Security Enhancement Structure). L’auteur était aussi gagnant d’un concours en électronique en 1979 ( Pays germaniques ) et voyait son projet publié dans le magazine électronique “ELO”.


The author Gust MEES is ICT Course Instructor, ”Member of the Advisory Board” from “Luxembourg Safer Internet” (LuSI), BEESECURE, Official Partner (Consultant) from the Ministry of Education in Luxembourg, project “MySecureIT“, Official Partner from the Ministry of Commerce in Luxembourg, project “CASES” (Cyberworld Awareness and Security Enhancement Structure).

The author was also a winner of an electronics contest (Germanic countries) in 1979 and got his project published in the “Electronics Magazine ELO”).

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Stay tuned for next blog post(s) 😉

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Maker-First Steps in Electronics-Building a Power Supply

Maker-First Steps in Electronics-Building a Power Supply

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Building a Variable Power Supply With Few Components

Variable Power Supply-work in progress

Click the image please to enlarge

In previous tutorial Maker-First Steps in Electronics, the basics WE got a bit the PracTICE of soldering and WE learned ALSO about schematics, resistors, LEDs, diodes and OHM’s Law. WE used ALSO a 9 Volt battery as a power supply for our projects; BUT batteries are expensive (3,99 €) and when playing around a lot on experimenting WE would use a lot of them. This will certainly be the case as on the beginning while tinkering around, my personal experience, as one is curios and tries out everything. Which is good by the way, but better is to build a variable power supply for few money and for small projects like WE are working on.

SO, let us have a look on the schematic about WHAT WE will create next. WE will discover some NEW components, such as a voltage regulator integrated circuit (IC), a variable resistor (potentiometer), capacitors, electrolytic capacitors… which WE will learn more about as well in this tutorial.

WE had already the experience with a stripboard, which we will continue (on the beginning) to build our variable power supply. It will be a very easy one with ONLY 10 components to solder on the stripboard. The tension will be adjustable  by a potentiometer (variable resistor) from 0-24 Volts and a maximum current of 1 Ampere. WE will ALSO provide it with a switch so that we can ALSO use it as a Volt-Meter to measure the tensions on our strip-board projects…

WE will ALSO learn to drill and to rasp as WE will enclose our project into an enclosure; well mechanics are part as well when one tinkers with electronics 😉

WE will solder measure points on the strip-board as well. so we can learn about measuring and to understand what is going on when AC gets through a rectifier bridge and becomes DC…

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Schematics

Electronic Schematics – Need-To-Know

BEST explication I have found and WHICH I agree!!! Electronic schematics are like recipes for electronics. They tell you what ingredients to use and how to mix the ingredients. But instead of using text to explain the recipe, a drawing is used.

Learn more:

Please check the schematics of OUR project below:

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variable-power-supply-schematics-test-screenshot

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The above schema was created with:

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Fuse

fuse-schematics

Rectifier bridge

bridge-rectifier-schematics

Voltage Regulator

voltage-regulators

Transformer

transformer-schematics

Capacitors and Polarized Capacitors (Electrolytic Capacitors)

 

capacitors-schematics

Variable Resistor (Potentiometer)

potentiometer

potentiometer-schematics

Resistors

resistor-schematics 

 

 

 

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Learn more:

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The Components and the Parts List

Please check below the photo to get familiarized with the parts.

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variable-power-supply-parts-list-photo

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In above image WE see parts which we used already in first tutorial <===> Electronics Starter Kit for Makers <===> such as resistors, diodes  and the stripbord. NEW components are (please check the links below to learn more):

This time WE will ALSO need to use some tools and mechanical parts; well electronics without mechanics doesn’t exist 😉 Will get explained in a new tutorial…

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List of online Electronics shops (mostly for Europe, but some are delivering ALSO global):

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Detailed parts list, supplier and prices

Please find below the detailed parts list as well as the supplier and the prices.

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Item and quantity

Supplier and order number

Price

1 x Transformer 230V/1A CONRAD: 710422 15,99€
1 x Bridge rectifier B40/C7000-4000 CONRAD: 501980  4,49€

2 x Electrolyte capacitor 1000uF/63V

CONRAD: 1472875 à 1,49€

 2,98€
1 x Diode 1N4007 CONRAD: 1262766 0,22€
1 x Resistor 100 Ω CONRAD: 405132  0,10€

1 x Potentiometer 4K7 Ω

CONRAD: 440778

1,99€

1 x Knob for potentiometer CONRAD: 715840 1,09€
1 x LM317T CONRAD: 176001  0,34€

1 x Capacitor MKS2-1uF/63V

CONRAD: 455318

1,49€
1 x Panel-Meter  CONRAD: 101950 35,99€
1 Heatsink for LM317T CONRAD: 183870  1,03€
1 x Mounting-Kit TO220 CONRAD: 155140 0,72€

1 x Stripboard

CONRAD: 529531

 2,19€
2 x PCB Connector 2 pins CONRAD: 1192188 à 0,28€ 0,56€ 
Total:  69,18€

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Check out this video tutorial to understand

A GREAT video tutorial to watch for understanding about the used “Voltage Regulator Chip LM317T“:

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First tests without the transformer

I propose to make the first test(s) without the transformer; by using a 9 Volts battery! This to make sure that there isn’t any mistake on the wiring as a short-circuit could cause damage!! Check photo below please:

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Test with 9 Volts battery

Click image please to enlarge

 

Using a copy of the schematics and a pen to erase the done connections already; this allows to keep an eye on how far one is…

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marking connections made

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Safety FIRST as WE are working with 230 Volts!!

549px-iso_7010_w012-svgI will propose two different projects, one for NEWBIES and one for advanced users! NEWBIES will NOT solder the transformer on the stripboard, BUT will connect it to the stripboard by <===> Safety FIRST rules <===> and advanced users could solder it on the stripboard by respecting these Safety rules! WE will use ALSO heat-shrinking tubes to insulate ALL the components where 230 Volts is connected to assume that nobody could touch them to avoid electrical shock by touching!!!

Learn more about heat-shrinking tubes:

 

I am NOT the guy WHO follows any rules, BUT THESE ONE I follow myself ALSO as it is mandatory!! YOUR life and/or the life of OTHERS could be in danger if NOT followed!!! SO, take YOUR responsibility, please 😉 Well, enough blabla, let us have a look WHY:

Learn more:

Check photos below please:

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Heat-shrinking tubes on transformer before shrinking

Click image please to enlarge.

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Heat-shrinking tubes on transformer after shrinking

Click image please to enlarge

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Let us protect and ALSO our workbench with a plastic underground (plastic is insulating…), check below please:

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Protecting and insulating workbench

Click above image please to enlarge it.

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Two different projects, one for NEWBIES and one for advanced users: thus meaning; NEWBIES will NOT solder the transformer on the stripboard, BUT fixing and connecting it apart! Advanced users will be able to solder the transformer on the stripboard by taking care of safety rules, check above image please for connected transformer on the stripboard and image below please for transformer connected with wires to the stripboard .

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Transformer connected outside the stripboard

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Building UP from the beginning a system for wiring

WE have two different possibilities for the wiring and connection of the components on the stripboard:

  1. Using really wiring with colored insulated wires
  2. Using ONLY the copper strips on the stripboard to make the connections
  3. OR using both as I did in above; one red colored wire was used to make a connection…

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WHEN WE use the wiring with colored insulated wires, we need to have a system in it, let us define UP from the beginning which colors mean WHAT! I propose this:

  • Red for the “PLUS” of DC Power Supply
  • Blue for the “Minus” (Ground) of DC Power Supply
  • Green for the connections of AC
  • White or blank silver wire for bridges on the stripboard: connections from one component to the other…

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List of free electronics circuit simulators

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ltspice-tutorial-simulator

Click image please to access the video

Nowadays WE have the chance to profit from FREE Simulator software to examine the How-To circuits work, please find below some useful links:

 

Please check below for useful articles on Software:

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Learn more:


Next steps to come

Well, first build the above and finish it! Later WE will bring in ALSO some test points (soldering them on the stripboard) for measuring the voltage on different points and we will solder as well on the stripboard some more components to protect out project against short circuits, an electronic fuse with ONLY five (5) components. WE, once finished the above mentioned will then go for mechanical works as the whole will get fit into an enclosure. There will be then a bit drilling, rasping and…

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Some electronics projects made +/- 25-30 years ago, check video below please 😉 I stopped tinkering around for the peace of our conjugal life, well wife was right! I had to much hobbies; NOW I am retired and I have too much time, SO I started again…

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Keywords necessary for me to create this blog post: Learning about alternative current (AC), Direct current (DC), Zenerdiodes, Voltage regulators, 7809, LM317T, Panelmeter, Digital Voltmeter, testing, measuring, test points, potentiometer, variable resistors, capacitors, electrolytic capacitors, LCD Display…

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GUST-AVRIL2014-800px-2L’auteur Gust MEES est Formateur andragogique / pédagogique TIC, membre du “Comité Conseil” de “Luxembourg Safer Internet” (LuSI), appelé maintenant BEESECURE, partenaire officiel (consultant) du Ministère de l’éducation au Luxembourg du projet  ”MySecureIT“, partenaire officiel du Ministère du Commerce au Luxembourg du projet ”CASES” (Cyberworld Awareness and Security Enhancement Structure). L’auteur était aussi gagnant d’un concours en électronique en 1979 ( Pays germaniques ) et voyait son projet publié dans le magazine électronique “ELO”.


The author Gust MEES is ICT Course Instructor, ”Member of the Advisory Board” from “Luxembourg Safer Internet” (LuSI), BEESECURE, Official Partner (Consultant) from the Ministry of Education in Luxembourg, project “MySecureIT“, Official Partner from the Ministry of Commerce in Luxembourg, project “CASES” (Cyberworld Awareness and Security Enhancement Structure).

The author was also a winner of an electronics contest (Germanic countries) in 1979 and got his project published in the “Electronics Magazine ELO”).

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Stay tuned for next blog post(s) 😉

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Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,