http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

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SpokePOV: LED Bike Wheel Imagesby ladyada on March 8, 2006

Table of Contents

SpokePOV: LED Bike Wheel Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Intro:   SpokePOV: LED Bike Wheel Images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 1:   Intro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Step 2:   Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Step 3:   Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Step 4:   Lets get ready to solder! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Step 5:   Attach battery clips - part 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 6:   Attach battery clips - part 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step 7:   Attach programming socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Step 8:   Attach microcontroller socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 9:   Attach small socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 10:   Attach Latch Chips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 11:   Attach the LED's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Step 12:   Attach the resistor networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Step 13:   Attach the 10k-ohm resistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Step 14:   Attach Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Step 15:   Attach the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Step 16:   Plug in Microcontroller chip and EEPROM chip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Step 17:   Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 18:   Hacking - Animations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 19:   Hacking - More Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 20:   Install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Step 21:   Build and connect the programming dongle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Step 22:   Run the image design & download software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Author:ladyadai r0x th' x0x & s0x[http://www.ladyada.net more stuff here]

Intro:  SpokePOV: LED Bike Wheel ImagesSpoke POV is an easy-to-make electronic kit toy that turns your bicycle wheel into a customized display! The project includes a free schematic design, open sourcesoftware for uploading and editing stored bitmap images, and a high-quality kit with all the parts necessary to build your own.

Tired: A red blinker on your seatpostWired: Programmable full-wheel images in any color

Specifications and Features:

Can be used with road, mountain or BMX wheels!30 LEDs on each side (22 for BMX) x 256 radial pixelsRuns on 2-3 AA batteries for 10 hours or more, assuming 3000mAh alkalines and 50% image coverage.Can run on rechargable NiMH AA'sComes with high-brightness red/yellow/green or blue LEDsAutomatically shuts off after 3 minuteswxPython based software runs on any Linux or Windows or Mac with Parallel port or serial portDesign is all through-hole parts, perfect for a first time kit builder.With one spoke, total persistence at 15mph. Two spokes, 10mph. Three spokes, 7mph. (Assuming a mountain bike wheel). Looks cool even if not completelypersistant.Great for safe riding at night, provides excellent side visibility.Playa-tested!

Kits & PCBs available for purchase at http://www.adafruit.com/For more information, like how to use the software to update images, visit http://www.ladyada.net/make/spokepov

& check out more cool projects at http://www.ladyada.net/

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 1: IntroThese instruction assume you purchased the kit or at least the PCB. All parts are through-hole and this should be a very easy project, even for a beginner. Still, if you'venever soldered before, this tutorial is really awesome. If you're part of the new streaming-video-generation, this set of soldering mpegs may do you right:http://radiojove.gsfc.nasa.gov/elab/soldering.htm

Image Notes1. these are all the parts that come with the kit

Step 2: ToolsThere are a few tools that are required for assembly. None of these tools are included in the kit. If you don't have them, now would be a good time to borrow or purchasethem. They are very very handy whenever assembling/fixing/modifying electronic devices! I provide links to buy them, but of course, you should get them whereever ismost convenient/inexpensive. Many of these parts are available in a place like Radio Shack or other (higher quality) DIY electronics stores.

Image Notes1. Solder. Rosin core, 60/40. Good solder is a good thing. Bad solder leads to bridging and cold solder joints which can be tough to find. Dont buy a tiny amount,you'll run out when you least expect it. 1lb spools are a minimum.2. Multimeter/Oscilloscope A meter is helpful to check voltages and continuity.3. Soldering iron. Personally, I like the WES50 (now the WES51) and the other ~$100 Wellers. One with temperature control and a stand is best. A conical or small'screwdriver' tip is good, almost all irons come with one of these. A low quality (ahem, $5 radioshack) iron may cause more problems than its worth. YMMV.4. Good light. More important than you think.5. Desoldering tool. If you are prone to incorrectly soldering parts. Some people prefer desoldering braid - a spool of finely braided copper wire.6. 'Handy Hands' with Magnifying Glass. Not absolutely necessary but will make things go much much faster.7. Flush/diagonal wire cutters. Essential for cutting leads close to the PCB.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 3: PartsAll these parts are included in the kit:

QTY----NAME----PART#-----DESCRIPTION1 IC1 ATtiny2323 microcontroller1 IC1* generic 20 pin socket1 IC2 25LC080 1kbyte EEPROM1 IC2* generic 8 pin socket8 IC3-IC10 74HC595 serial to parallel latch1 X1 DN6852 hall effect sensor1 S1 SKQBAKA010 waterproof switch1 J2 30310-6002HB programming header4 n/a 12BH092 AA battery clips1 R1 generic 1/4W 10Kohm 5% resistor8 RN1-RN8 266-xxx 10-pin bussed resistor network60 LED1-LED60 high brightness LED's1 PCB custom silkscreened printed circuit board (PCB)

Image Notes1. 12BH092 AA battery clips2. R1 10Kohm 1/4W resistor3. socket for IC14. custom silkscreened printed circuit board (PCB)5. IC2 25LC080 1KByte EEPROM6. socket for IC27. J2 programming header8. IC3 - IC10 74HC595 serial to parallel latch9. X1 DN6852 hall effect sensor10. S1 SKQBAKA010 waterproof switch11. LED1 - LED60 high brightness LED12. IC1 ATtiny2323 microcontroller13. RN1 - RN8 266-xxx (xxx resistor value) 10-pin resistor network

Step 4: Lets get ready to solder!Get your bench set up for soldering, and place the PCB in a good board holder

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Step 5: Attach battery clips - part 1Place the 4 battery clips in the top two battery positions, as shown. Tack them in place with solder so that when you turn the board over they wont fall out!

Image Notes1. tacking the first clip in place

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 6: Attach battery clips - part 2Now turn the board over and solder the outer tabs of the clips first and then resolder the inner tabs. Make sure theres plenty of solder: these connections are not justelectrical, they're mechanical too!

Image Notes1. solder the inner and outer tabs of the clips.

Step 7: Attach programming socketPut in the programming socket, make sure to align the notch with the picture on the PCB. Now turn the PCB over and hold the socket in place while you solder it in.

Image Notes1. place programming socket - note notch orientation

Image Notes1. solder the pins while holding the socket in place with your finger.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 8: Attach microcontroller socketPlace the large socket as shown. There's a notch in the socket which should line up with the notch in the image of the socket. The notch will help you align themicrocontroller chip in properly. Turn the board over and hold the socket in with a finger, tack two corners pins to keep it in place then solder the rest of the pins.

Image Notes1. Place large Microcontroller socket, note notch on one end of the socket andorient as shown (notch at top of image)2. notch in socket

Image Notes1. done

Step 9: Attach small socketSolder in the smaller socket just like the larger one. make sure to orient the notch as shown

Image Notes1. the notch is facing LEFT in this image

Image Notes1. solder the pins of the socket while holding the socket onto the board

Step 10: Attach Latch ChipsPlace the 6 top 74HC595 latch chips in the proper spots, making sure to align the notches on the chip with the notches in the pictures. Tack them in place by solderingtwo corner pins of each one from the top. Then turn the board over and solder all the pins.

Next, do the same with the 2 latches on the reverse side.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 11: Attach the LED'sCut the LEDs from the tape and place the first 30 into the front row. Make sure that the flat side of the LED is aligned with the flat side of the LED shown on the board.Otherwise the LED will not light up. This is a pretty common mistake so work slowly and carefully.

When you place each LED, bend the leads out so that it wont fall out when you turn the board over.

Solder the LEDs and clip the leads, either one at a time or all at once, whichever is easiest for you.

After one side of the board is done, repeat for the other row of LEDs

Image Notes1. place LED's making sure that the flat side lines up with the markings on thePCB

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Image Notes1. LED's are inserted and leads are bent over so they don't fall out while wesolder them

Image Notes1. solder the LED's, then clip the extra wire

Image Notes1. all done2. all done

Step 12: Attach the resistor networksSolder in the 8 9-SIP resistor networks. Make sure you align them correctly: one side of the resistor pack has a dot which corresponds to pin 1 which is marked with an Xin the picture on the circuit board.

Step 13: Attach the 10k-ohm resistorPlace the one 10K resistor. Bend the leads like with the LEDs and solder it in, then clip the leads off.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Image Notes1. 10k resistor

Step 14: Attach ButtonPlace the button, which will snap into place. Solder it in.

Image Notes1. button

Step 15: Attach the SensorBend the sensor so that the face points out as shown. Since the sensor has to stick out but has short leads, solder it from the top, making sure that the leads don't sticktoo far through on the other side. See the picture to the left.

Image Notes1. attach sensor, face pointing out as shown

Step 16: Plug in Microcontroller chip and EEPROM chipPut the microcontroller in the large socket so that the notches match up. The sensor can 'lean' on the microcontroller. If you want, you can use a bit of glue to support it.

Flip the board over and place the EEPROM in the smaller socket so that the notches line up. You're done!

Image Notes1. plug in microcontroller, lining up notches

Image Notes1. plug in eeprom, lining up notches

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 17: TestNow that you're done assembling it, you can test the board to make sure its functioning. Put two good AA batteries into the clips. Whenever the microcontroller getsnotice of a 'hard reset' it goes through a little test routine where it lights up all the LEDs in order. If none of the LEDs are lighting up, go back and check to see if you put inany latches, batteries or the microcontroller in backwards. If just a few LEDs arent lighting up, check if they're in backwards.

Step 18: Hacking - AnimationsAnimations! Have a pacmac chomp while you ride...Download the animation-supported software, and make sure you have upgraded the EEPROM to hold more images. Isuggest either a 2K EEPROM (25C16P-1.8) for 2 images, or 4K (25C32P-1.8) for 4 images. You can buy these from Mouser for a few dollars a piece. You can't use just3 frames (well, you could but the code doesnt support it). Then upload the images to seperate banks. Note that the software can't (yet) tell how big the EEPROM is so ifyou only have 2 image banks, bank #3 will be the same as #1 and #4 is really #2. Then set the number of rotations to display each image, just like any other variable. OKyou're ready to rock.

Step 19: Hacking - More ColorsWow look at all the pretty colors! The standard kit uses 2 batteries, which will work with red, orange and yellow LED's. If you want to use green, blue, white or purpleLED's you will need to add a third battery. To do that, purchase 2 more battery clips from Mouser. Before you solder them in, you have to cut a trace. I thought I'd be allsmart and put a note on the PCB about which trace to cut but I put it on the wrong side of the board. If you hold it up to a bright light you'll see the trace, or use this handyguide:

Image Notes1. cut this trace to use a 3-battery setup

Step 20: InstallAttach the spokepov to your bike wheel with zipties as shown.

After it is attached, place the magnet on the frame as shown. The magnet must line up with the sensor on the PCB, it may take some fiddling with the sensor and magnetto get them in range. The range on the sensor is 1-2 centimeters.

If you are attaching more than one SpokePOV on your wheel, make sure they are lined up at an equal distance from the rim, use a ruler.

Image Notes1. attach zip-tie here

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Image Notes1. pull tight

Image Notes1. another zip-tie here

Image Notes1. more zip-ties

Image Notes1. clip off the excess

Image Notes1. put a rare-earth magnet here, lined up with the sensor on the PCB

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Step 21: Build and connect the programming dongleInstructions for building the programming dongle are at http://www.ladyada.net/make/spokepovit should be a breeze in comparison. (Note that in this image, R1 and R4 are swapped, don't make that mistake!)Now connect it up!

Step 22: Run the image design & download softwareYou can import images as .bmp files, then do a little touchup before writing the image to the spokepov. For more detailed instructions on how to run the software visithttp://www.ladyada.net/make/spokepov

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

Related Instructables

RGBike POV -Open project byHazard

Ghetto SpokePOV Lights bylordofthedonuts

DIY LED ByciclePOV bymurray484 Suave-Looking

Brain Machineby kyle.marsh

Dynamopowered LEDbike lights bykptBurek

AutomaticBicycleHandlebar EndLights byHandsome-Ryan

Comments

50 comments Add Comment view all 177 comments

 SniperCzar says:  Jan 24, 2010. 11:01 AM  REPLYAnybody know a way to put this on a car wheel/legality of doing so?  I would love to put this thing on the wheels of my wip EV conversion...

 abadfart says:  Dec 14, 2010. 3:55 PM  REPLYi would love to do a small one on a sport bike and a el wire jacket for a tron look

 chucksta says:  May 9, 2010. 6:09 PM  REPLYI'm pretty sure it depends on the state.

 explosivefart says:  Nov 23, 2010. 9:30 PM  REPLYCan you use this on car wheels?

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

 thier says:  Oct 27, 2009. 2:35 PM  REPLYI'm having troubles when I try to  Burn the programming at the microcontroller and. And the instructions that I have got here  in the  web site do not reportanything about the burnig process.I WOULD LIKE TO KNOW IF SOMEONE FROM THE SKY, COULD HELP ME AT THE BURNIG PROCESS!My e-mail adress is:   dougfb46@hotmail.com or                                        dougfb46@gmail.com

Thanks by the way.

 eulaliaaaa! says:  Oct 22, 2009. 8:03 AM  REPLYSweeet!  I like the pac-man and ghost thingy.

 RiddleOfSphinx says:  Apr 2, 2008. 5:08 PM  REPLYHaven't read all the comments, but if this is a repeated comment then my apologies ;) Can this be modified to work on car rims as well? I'm sure I could finda way to secure it safely, but wanted to know if it would have the same effect or if the image would be distorted due to size, RPM, etc.

 darthneo says:  Sep 9, 2009. 9:48 AM  REPLYHave you tried to put them on your car wheels yet?

 RiddleOfSphinx says:  Sep 9, 2009. 5:51 PM  REPLYNope, haven't been able to buy any yet :-S

 sparr says:  Dec 5, 2008. 9:01 PM  REPLYIt would work just fine on car rims. The spokePOV firmware has been tested up to 100mph on a bike wheel (faster than the uC can't keep up)

 RiddleOfSphinx says:  Dec 8, 2008. 3:55 PM  REPLYHmm, I may have to try it out then, thanks :D !!

 sparr says:  Dec 8, 2008. 4:08 PM  REPLYSmall update. The software can handle faster. The battery clips cannot. You would want to more securely attach the batteries, possibly in anexternal battery holder at the center of the wheel, to minimize strain on the board and battery clips.

 RiddleOfSphinx says:  Dec 9, 2008. 3:32 PM  REPLYI think that would still be do-able for me, Thanks for the update :D

 DYLEGO says:  Jan 23, 2009. 10:20 AM  REPLYanother thing is you would need 4, and they do double-sided animations...

 tinyboy says:  Nov 16, 2008. 7:21 PM  REPLYwhere i can obtain the pcb

 darthneo says:  Sep 9, 2009. 9:49 AM  REPLYcheck http://www.ladyada.net/make/spokepov/

 roadwarrior says:  Nov 19, 2008. 4:29 PM  REPLYhere u go:

http://www.adafruit.com/index.php?main_page=product_info&cPath=6&products_id=6

http://www.adafruit.com/index.php?main_page=index&cPath=6

 awang8 says:  Mar 26, 2009. 10:46 PM  REPLYWhat is the minimum speed required by this to produce a clear image?

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

 darthneo says:  Sep 9, 2009. 9:45 AM  REPLYi think i read on her site: http://www.ladyada.net/make/spokepov/ if you have 1 SpokePOV you need to be going (i think) around 14 MPH to see a clearimage, i think 2 SpokePOVs you need to be going about 10 MPH and 3 8MPH (i could be wrong)

 froggy231 says:  Jul 28, 2009. 7:01 PM  REPLYis it waterproof

 darthneo says:  Sep 9, 2009. 9:43 AM  REPLYYou can buy some sort of spray to spray the board with that will make it somewhat water resistant, if you browse around her site you might findsomething http://www.ladyada.net/make/spokepov/

 godfreyandthandi says:  Aug 16, 2009. 2:19 AM  REPLYnope

 gener_i says:  Jul 28, 2009. 6:58 PM  REPLYCan I used PIC micro controller instead of AVR tiny what particular PIC part number can you suggest?

 darthneo says:  Sep 9, 2009. 9:41 AM  REPLYIf you use a different microcontroller, you'd probably have to rewrite most of the code thats used...

 PacChild says:  May 30, 2009. 7:53 PM  REPLYHow Much Will All This Cost? and Can You Go To Like Any RadioShack, Or Must You Order Online D:

 darthneo says:  Sep 9, 2009. 9:41 AM  REPLYyou can find more info on her project (including parts and custom pcb board) here: http://www.ladyada.net/make/spokepov/

 tyson.ras says:  Aug 19, 2009. 9:18 AM  REPLYWhat would it take for you to just build me a pair of the pac man lights and send them to me? I really serious about this.

 lamborox says:  Aug 8, 2009. 7:18 AM  REPLYmine isn't being noticed by my computer I accidently soderd my micro controller on the wrong side of the circuitboard would that make a difference and dothe batteries have to be in when you program it?

 godfreyandthandi says:  Aug 16, 2009. 2:20 AM  REPLYyes and yes.

 wadadli says:  Jul 19, 2009. 7:45 AM  REPLYDid somebody say this is an EASY project?

 godfreyandthandi says:  Aug 16, 2009. 2:20 AM  REPLYit is...

 darkstar1 says:  Aug 6, 2009. 8:41 PM  REPLYGo chelsea

 gener_i says:  Jul 28, 2009. 7:01 PM  REPLYCan I replaced you AVR tiny to PIC MCU which is more widely available here in the Philippines,can you recomend what kind or part number of PIC canreplaced you AVR MCU

 Javin007 says:  Jul 6, 2009. 11:06 AM  REPLYWant.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

 Redgerr says:  Jul 20, 2009. 12:09 PM  REPLYcount me in

 james.mcglashan says:  Jul 25, 2009. 7:48 PM  REPLYme too i want

 alienresident says:  Jun 18, 2009. 9:27 AM  REPLYVideo link update, the link seems to have moved herehttp://radiojove.gsfc.nasa.gov/telescope/soldering.htm

 PacChild says:  May 30, 2009. 8:10 PM  REPLYI feel like im going to be one of the only people who wont be able to do this, yes i am that clumbsy, is there anywhere that i can buy it done already? planningto do this summer :P

 Notbob says:  Jun 12, 2009. 2:11 PM  REPLYmonkey electric sells their own version http://www.monkeylectric.com/m132s.htm

But to my knowledge no one sells these pre-made.

 gaias says:  Mar 9, 2009. 11:02 AM  REPLYHi, how much current does one LED consume? I ask because the datasheet of the 74HC595 states that DC to Vcc or ground in total must be lower than 70mA.

 Derin says:  Apr 10, 2009. 10:57 AM  REPLYLED's draw 20 mA without current limiting.

 gaias says:  May 23, 2009. 10:51 AM  REPLYWell, then I would not use this kit in its current state because there is a good chance of destroying the shift registers with the layout obviously usedhere. An idea to improve the circuit would be to attach driving transistors to the shift registers. That could easily be done by using ULN2803darlington arrays.

 andrecitwo says:  May 15, 2009. 12:10 PM  REPLYWhere can i obtain the pcb ??? i´m in south america(argentina). Can i make it with a pcb and the circuit ????

 max1234 says:  Apr 18, 2009. 12:09 PM  REPLYHei can any one provide me the pcb layout as I do not want to buy the kit. I want to make the whole circuit on my own. please anyonehelp me......

 WOW THAT REALLY WORKS! says:  Feb 18, 2009. 2:42 PM  REPLYif u fall all the leds will break... right?

 cornflaker says:  Mar 26, 2009. 4:37 AM  REPLYleds are made of plastic not glass...

 theycallmeknowledge says:  Mar 20, 2009. 1:29 AM  REPLYvery creative.

 WOW THAT REALLY WORKS! says:  Feb 17, 2009. 4:19 PM  REPLYOk i saw this and thought genius so im doing this as my summer project im also makeing the body be a bright bike

 gzip says:  Jan 14, 2009. 10:46 PM  REPLYThe project is cool but it reads more like a soldering tutorial. A little theory on the components (microcontroller, eeprom, latch, hall effect sensor, dongle, andsoftware) would go a long way. Otherwise all we're left with is another kit to buy.

http://www.instructables.com/id/SpokePOV%3a-LED-Bike-Wheel-Images/

 JellyWoo says:  Mar 1, 2008. 7:57 AM  REPLYwhat should i buy because when i click the website, you can buy Triple SpokePOV Kit + Dongle + 2 Magnets, SpokePOV Kit, SpokePOV Kit PCB,SpokePOV Dongle Kit, High-strength 'rare earth' magnet , or SpokePOV microcontroller. Finally how much of each do I have to buy? (i am planning to dothis to both wheels.) Thanks

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