When I first started streaming, I made a dual LED flasher circuit. Unfortunately, I forgot to save the recording of the stream. I decided to make it again and convert my LED statue sculpture into something very interesting.
(The full video recording of the stream is attached below)
The circuit is very simple and only uses a few parts. It can be made for under 4 dollars very easily.
LED (RED or GREEN or YELLOW) 2 [But in my case, I used 15. 14 as a tower in series and 1 externally]
Resistors- 1Kx2 , 10Kx2
Capacitors- 22uF x2
9V Power Supply x1
I used a highly modified version of a circuit that I found online. In my first stream, I made the circuit on the breadboard. But I made it permanent by soldering the circuit on a protoboard for a project.
The circuit is a dual LED flasher powered by two transistors.
This is the circuit. You can get the HQ scheme from the product card below.
Get It Here:
Since I combined the above circuit into a pre-existing LED Tower, I soldered it into a Vero board and made it permanent.
Now, you might say, Where is the second LED?
Well, I made a LED 2D Pyramid with 14 LEDs in Parallel.
I made it look like a triangle. But in 2d. It is a soldering task. I agree. But when lit. It looks very good.
The circuit for the same is
I used a long copper wire to connect all of the ground. The LED on the perf-board will make the box its enclosed in glow. But the structure will blink indipendently.
I lowered the voltage and took a photo of the structure in action.
For enclosing the circuit, I used a blank CCTV Circuit enclosure box. You may get one from the link below. (Please note. The link I am providing here is an affiliate link. I earn a small percent for every qualifying sale. That helps me run the channel also. When I get enough sum from my BMC, I will shift from affiliate links to official ones. Thank You!)
My most recent project was to transfer music with the help of light. This is actually a part of a very large project.
Things that you will need!
LM386 audio amplifier chip
LED ( white or blue preffered)
Capacitors: (50 uF (2), 1000uF (1))
3.3 volt and 5 volt power supply
Here a peltier module image is used since a real solar panel was not available in fritzing.:) This amplifier is extremely easy to make and only costs about 1$ (if the components are purchased in bulk)
Now we have to make the transmitter. It is a very simple voltage amplifier circuit that works with 3 volts. You can make the circuit by looking at the schematic below.
STEP 3: (Not mandatory)
You can also see the image below to get an idea of the circuit on a PCB.
And done. Your wireless transmitter is ready. You can now make it and enjoy. Also see video below for further details. Link Of the video In-case you want be in the loop and want to know when a new video is uploaded SUBSCRIBE and also click the subscribe button in the home page to sign up and be notified every time a post is up!
You can now obtain the files for making a water detector at home yourself. This can be used for monitoring plants, animal water bowls, water pumps, etc.
You make this at your own risk though. Make sure that you do not use any kind of live voltages near your pet.
The circuit is a transistor based water detector which uses one NPN transistor and a few more complementary parts to achieve the task. This cicuit uses a low voltage potential on the sensor side which is safe for palnts and animals alike.
This device can be powered with a 9 volt battery.
The full component list is:
9 volt battery
PCB clad board
And thats it. You spend less that Rs20 which is around $0.25 (or 25 cents)
If you make this, tag me on twitter and let me know!
So I have finally finished making the chip after 3, mostly successful attempts. So the thing is that the chip I made follows the principle of a real chip i.e. I mean that it uses transistors as its brain. It is a single transistor capacitor based IC. It is also called LB103 (3rd version). What it does is that it blinks the LED based on the voltage and the capacitance. What I did was that I used a capacitor of value 407 microfarad. What I found was that the chip was very bad at blinking the LED accurately. Even a change of 1 volt causes it to stop blinking for ever. Even with my very accurate (sarcasm) power supply, it was a blast trying to make it work. But I did it and recorded my adventure making and trying to use it. But I am going describe its construction here.
The materials I used were:
BC547 (NPN transistor)
( I am assuming that you have most of the basic components such as a soldering iron and a lead roll.) Making the chip:
So I started with the smallest piece of protoboard I could cut using a knife. Then I cut of the base pin of the transistor. I did that as the base pin is not required for the configuration. Then I soldered the transistor in place.
Then came the capacitor. Unfortunately I used a capacitor of the capacity 407. But if you are also going to attempt this, I sincerely suggest that you use a capacitor of value 100 or anything below 400 or a capacitor of capacity 1000. Also get a branded one mostly from Murata or any other established brand. Then I soldered the capacitor in place. In the first 2 iterations I used a defunct brand’s capacitor (capapower) and the chip was very accurate but the transistor was not. So it was still useless as it was equally inaccurate. This time I used some transistors from TI and the capacitor was inaccurate. But I somehow finally got it to work in the end. This amplifier is extremely easy to make and only costs about 1$ (if the components are purchased in bulk)
Moving on, Then I needed to add the legs that made it look like a chip. Before that I would like to tell you that I made a huge mistake when cutting my PCB which will be highlighted by me in the video check it there. Due to which the chip’s legs were not aligned properly and it did not fit properly. For the legs I used 2 resistors of a type I never used. And then I finished preparing the legs.
Then I finished the circuit and it was ready. Then came the problem I mentioned before. So I had to adjust the legs of my circuit and then It was ready for testing. During my test I noticed that the chip only worked with 12 volts and it stopped functioning with 13 volts. But I got to work and here it is:
The circuit I used can be downloaded from the link below! With that this project-info ends. Link Of the video
You can also download the files from: Link for the files And I will also be uploading the gerber files of the PCB and the BOM file with which you can buy the components and also order my PCB of the chip which you can find in my site. (link is given above) Best of luck, Stay Safe and Have Fun! Meet you in my next post!.