Arduino Wireless Power POV Display

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Introduction: Arduino Wireless Power POV Display

When I first met this little device, I liked it immediately. I decided to make my own POV. I watched lot of videos, and recognised some main problems. The power supplying of the micro-controller was the biggest. Spinning battery or sliding commutators were both refused. Only option was the air core coil for me. That solution seemed too difficult. I could manage to solve this problem successfully. I created an easy but relatively efficient circuit with a few electronic parts.

Step 1: Schematic Diagram

The schematic diagram

Step 2: Components You Need:

Component list: with links

1. Arduino pro mini ATMEGA328 5V 16 Mhz

2. DS 3231 RTC module

3. 7 pcs 1206 smd LEDs

4. 7 pcs 220 ohm resistors 0805 or 1206

5. TCRT5000 Reflective optical sensor

6. 2 pcs 4.7 nF capacitor 4.7 nF 1206

7. 1 pc SS34 schottky diode

8. 1 pc 1...4.7 uF capacitor 1 uF 1206

9. 2 meters 24 AWG ( 0.51 mm) magnet wire

10. 1 pc 1.5 nF capacitor 1.5 nF 1206

11. 1 pc BCX 56 transistor ( I tried BC 639, BC 368, worked well) BCX56

12. 1 pc 4.7k resistor 4.7k 1206

13. The motor and some other parts are from and old CD player. Or new motor with disc holder

14. 5V power supply,( USB charger or power bank).

Step 3: The Heart of This Project : Coils.

There is a simple coil in the receiver side and a bifilar coil in the transmitter side. The secret is that they have to have same size and same number of turns. In my coils this number is 8. The little trick in the bifilar coil is that coil consists two coils with 4 turns. It is not difficult to make. The preparation process same as in the single coil.

I used 24 AWG ( 0.51 mm) magnet wire for winding coil. 8 turns , 35 mm diameter.

As you can see in the picture we have 4 wires in the bifilar coil and we need a common point. Two of them will be connected to each other that point will be the common point. There are two options. 1. connect red start to blue end. Or : 2. connect blue start to red end.That's all. I am not too good at explaining things, but hope, you understood.

Step 4: Arduino Software

The software:

Step 5: Making Coils Step by Step

Step 6: Building Transmitter

It requires some soldering skills. I will make a version with bigger through hole parts.

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82 Discussions

Ok now I see your coil winding technique. Really nice work on the coil winding. I have been trying to wind mine for inductive power transfer and mine so far have been the bad example for the 'Nailed It' meme. I'll keep trying because thanks to you i see it possible. Thanks.

Hello again holybaf. Finally I finished it (the beta version of course) but when starting the mechanism, the dc motor takes a lot of speed, making everything vibrate too much. Have you used something to reduce the motor speed ? What should I adjust in the source code to synchronize the texts according to the motor speed?. Thanks again.

1 more answer

Hello, 47 ohm resistor serial with the motor decreased speed properly for me. Find the line in the code: int timer = 200 ; and set it 170 or less if the speed is high.

The next project: POV with IR data transmission. Coming soon.

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1 reply

Nice, clever configuration. Congrats!

Hi again!

I have another some questions, the first one is about the RTC module, it comes with a small battery to keep the clock running when there is no external voltage (I guess), is there any reason why you have removed it? (I don't see it in the pictures)

The second one, is about the LEDs, do you have any picture of the solder between the LEDs and their resistors?

Another one, what glue did you use to keep the coil attached?

Finaly, do you have any recommendation to make a correct balancing of the upper disc?

Thanks a lot for you support!

See you, William

PS: Take a look at the small PCBs inspired by your design.

DS 3231 RTC module.jpgIMG_9596.JPG
1 more answer

Hi,

This kind of battery is not rechargeable and I had a discharged one. I wanted to use a rechargeable coin cell battery and place it on the surface of disc as a balance weight. After that I re-thought the design and dropped that idea. Of course you can use small battery for continuous working. I used cyanoacrylate super glue for coils. I balanced the disc with a holed coin. I will upload photos about of resistors on back of LED's.

I liked your design! Well done!

Hi Mr.Holybaf. Very nice project, congrats and thanks for your patience. I have a question, I don't what it's the SMD component conected at transistor emitter pin, looks like a Tantalum Capacitor, but no appear in the Schematic Diagram. Thanks 4 u time.

PD:By the way, I'll be waiting for the mini POV with IR data transmission.

image.png
1 more answer

Hi WilliamM25, thank you . That is a filter capacitor between GND and 5V. 22u 16V. My next project will be the mini POV with IR data transmission hopefully next month.

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supine

Question 3 months ago

hi,

Is there a difference using a sine wave or square wave signal for the transmitter part??

1 more answer

Hi, there is no difference.

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supine

3 months ago

hi,

Is there a difference using a sine wave or square wave signal for the transmitter part??

AMAZING, and in your HONOR i will build this also for you, and link you on my website and channel

i am a clock junky, and POV fanatic, in the best way, coming soon to see on my channel, as you can see i made my own PV stick want, and have a fan that display REAL pictures and LIVE clock and temperature, via an APP.

and yours wil be add to my collection, believe me, this is a FRACTION of what i have and is coming............ THANXXXXXXXXXXXXXXXX

www.wannaduino.com

Time is a fabricated LIE just to undermine us.

IMG_20171112_214826.jpgIMG_20171112_214444.jpgIMG_20171011_002342.jpgIMG_20171114_010322.jpgIMG_20170912_235724.jpgpovme.pngclockpov.png
3 replies

"Time is a fabricated LIE just to undermine us." Hahah. I like the Douglas Adams quote, though: "Time is an illusion. Lunchtime, doubly so."

From a fellow "clock junkie."

Thank you. You are a real POV expert.

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DummyD

4 months ago

thanks for all the reply @holybaf u help me understand and i hope u will still answer my questions if i have one in the future

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DummyD

Question 5 months ago

so basically on what i understand, PWM is just a square wave signal with adjustable duty cycle and the blocking oscillator is just a generator of square wave signal but the signal created by that oscillator cant be adjusted like the PWM....and is it okay to use either square wave or sine wave signal for the transmitter??TIA

1 more answer
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DummyD

Question 5 months ago

thank you for all your reply but i cant still grasp how the blocking oscillator can create a sine wave, can you pls explain it to me because i need it for my presentation. i hope u understand