LED Christmas Cards using PIC 10F200

This is an instructable on how to build an LED Christmas card using the PIC 10F200 microcontroller.

As this PIC has six pins and is the size of an SMD transistor, it is ideal for low profile applications and can easily be reprogrammed as and when needed.

In this case I am using the "reverse polarised LED" trick to get six LED's working from three I/O lines, as detailed in Microchip's "Application Notes".

Runs on two 3V cells, as the PIC's maximum voltage is around 7V this is acceptable and the cells last a lot longer this way.

can be used with any of the 10F20x series but you may need to modify the code slightly.

Have fun, -Andre

Step 1 Program the PIC(s)

I've used the K182 programmer here, in order to make prototyping easier I soldered a 10F200 to a carrier PCB (cut down from inside an old Sony battery pack) and then soldered wires to this.

Note that this PIC requires ICSP, which means if your programmer doesen't support this then you will need to find one that does. External 5V is needed, here it is provided from a 9V battery and 7805 regulator.

Comments

[nodoubtman]

Do you have the schematic please?

thanks!:)

[RYUNOROBERT]

I think the same...
Dou you have it?

[GorillazMiko]

looks complicated. :-0

[conundrum2007]

it isn't too bad- the hard part is writing the code :) to actually solder the beastie took about half an hour. -A

[schorhr]

Hello there! I finaly got arround to ordering "a few" pic10f for 32 cents each, and the ebay seller threw in a free adapter for easier connecting it.
I also recieved a cheap usb programmer, but now I got confused:
I do know that the pin layout is differently for the pic10f in sot23 then the "regular" pics, but many tutorials mention 12/13v programming-
while here and on the programmer's description only the pin layout is mentioned.
If it only works with high voltage programming, can I safely connect any 13v power source?

[schorhr]

 Problem solved, the programmer does supply 13v- only my first two microcontrolles would not program using the adapter. Probably bent pins and weak connections, hard to tell, even through my magnifying glass. Darn small sot23 uCs.

[conundrum2142]

Hi, I found that for SMD stuff an invaluable device to have is a salvaged flatbed scanner lens.
I personally use one from a defunct Bull Electrical scan module and it fits perfectly on my Olympus camera for ultra-macro mode.

Best bet is one from a really old steam driven scanner, the modern ones tend not to be as good.

Also, please be aware that I can provide programmed and wired chips if anyone has problems soldering SOT-6 ICs..

-A

[The Lightning Stalker]

A schematic would be nice.

[schorhr]

Nice "e-Card" :-) I am still trying to figure out what I could do with the smd pic in our future wedding rings else then emmiting radiowaves, since the power supply problem remains.

[bob31415]

Hi I'm from Ecuador. Your instructable is very funny! LOL!!!!