DIY simple porjects for a beginner. - Page 1
Forum section: electronics / beginners

author: GFXMihnea
author_rank: Contributor
timestamp: March 01, 2013, 05:49:46 pm
content: Hi, my name is Mocodean mihnea, and i'm a 16 years boy who is passionate about electronics.Well, today i just tear'down an old tv, and i found some good parts.At least 200 caps( +50 what i already had)Some tranzistors, and other components.I tried to make a flyback transformer but i failed, because at that time i didn't have a npn transistor, and a super easy driver scheme.If you want i can make a list of transistor what i have found, i just want to make a simple diy projects to present at my school.

author: RjSa
author_rank: Contributor
timestamp: March 11, 2013, 03:11:38 pm
content: Hey,Just make a quick google search and you will find sites like this one:http://www.circuitstoday.com/simple-electronics-projects-and-circuits

author: EExtrom
author_rank: Contributor
timestamp: March 11, 2013, 04:25:35 pm
content: Maybe you should start with some easier projects than a flyback and slowly build confidence.Some elements from old stuff (specialyelectrolitic capacitors) are not worthy to reuse!

author: andreiu21
author_rank: Newbie
timestamp: March 11, 2013, 05:20:22 pm
content: Try something with LED's.LED's are always fun. (at least in my opinion) Doesn't matter if you're building a dumb RGB colour changing lamp, or a 1000 hand soldered led matrix display.

author: potatogun96
author_rank: Contributor
timestamp: March 11, 2013, 06:10:34 pm
content: If you don't have a breadboard, I suggest getting one. It will make prototyping your circuits much easier. You can find lots of circuits online if you look around.

author: AmirTheGreat
author_rank: Unknown
timestamp: March 11, 2013, 07:25:50 pm
content: I suggest building your own power supply, which will come in handy.Alan has a great youtube channel about electronics and simple stuff you can build. follow along with this video and compare the parts mentioned in the video with the parts you have at home and find some compatible ones.

author: shadowcomputer
author_rank: Newbie
timestamp: March 11, 2013, 10:06:22 pm
content: I would start by getting some 555 timers and leds and blinking some led's, or add a 4017 decade counter to blink multiple led's in sequence. As others suggested a basic dc to dc power supply with a voltage adjustment would be great. You can use a 12v plug pack, and a LM350 of LM317 voltage regulator and a potentiometer to built it on a breadboard. Fun stuff!

author: McMonster
author_rank: Frequent Contributor
timestamp: March 11, 2013, 10:49:49 pm
content: I second the idea of building a power supply. It's great thing for a first "serious" project and it's an extremely useful device. You can't have too many PSUs.

author: RjSa
author_rank: Contributor
timestamp: March 11, 2013, 11:16:27 pm
content: Maybe something involving AC mains is not a safe idea for a beginner.As shadowcomputer said ... maybe the easiest and safest circuit you can build is a led blinker and is also something visual that he could present at his school.

author: johnboxall
author_rank: Unknown
timestamp: March 12, 2013, 02:19:21 am
content: Quote from: GFXMihnea on March 01, 2013, 05:49:46 pmYou will find many projects to make and lots to learn here:http://www.talkingelectronics.com/te_interactive_index.htmlHave fun

author: Neato3000
author_rank: Newbie
timestamp: March 12, 2013, 05:00:25 am
content: Quote from: shadowcomputer on March 11, 2013, 10:06:22 pmHi all, this is my first post, but I just had to agree with shadowcomputer about beginner projects. I have to say that learning what a 555 timer can do has become invaluable to me. I have scrapped a crt monitor before, and the only thing I used was the flyback transformer. So in association with what the OP has going on, I used a 555 timer to run along with a mosfet to drive the flyback transformer and create an arc. Knight Rider lights with a couple of 4017 decade counters isn't a bad challenge either though.

author: maca_404
author_rank: Contributor
timestamp: March 12, 2013, 10:11:17 am
content: I think it would still be worth having a look at the Jaycar kits and similar, I think its a great way to get your beak wet and not have to worry about component selection etc and there is some really useful projects there.

author: moemoe
author_rank: Regular Contributor
timestamp: March 12, 2013, 10:56:28 am
content: You just talked about the disassembled TV. So you first should make sure that you got some additional parts, like- breadboard- multimeter (a cheap one will do in the beginning)- power source (proper short circuit proof power supply or just 3-4 aa-cells and a little 200mA fuse to make sure they don't blow up when you short circuit)And then learn how the following things work, in this order:- diodes, leds; resistors, capacitors (parallel/in row)- it's time to have some fun and first success stories with a 555, there are lot of simple examples in the net. make a led blink or sth like that.- basic opamp patterns- logic circuits on the paper and with 74xx (perhaps before a linear regulator to make sure they don't smoke too much)- whatever you like to build