How to make your own PCB on free postal labels using conductive ink, epoxy and a few parts. By PCB I mean, Post-Circuit Board: as in enter the age of circuits painted on walls. And also because its on postage. Neither snow nor rain nor heat nor law nor gloom of night stays these couriers from the swift completion of their self-appointed rounds. Lets all Go Postal.
Another old project out of the dust bin of 2006 from the Graffiti Research Lab and The Eyebeam OpenLab.
Confront your fear of the hi-res video by clicking here.
Step 1: The Ways and Means
The essential ways and means to build a PCB:
1. a USPS Priority Mail postal label
2. a multimeter
3. 5-minute epoxy
4. conductive epoxy
5. conductive paint or ink
6. fine tip paint brush
7. copper tape
8. Whatever specific electronic components you need for your circuit.
Step 2: Circuit and Sticker Design
This instructable will detail one way to put a blinking LED circuit on postage, fabric, wood and other surfaces. But there's a lot of potential for what could be made using these materials and techniques and a world of simple circuits in textbooks and on the internet to try out. The conductive paint and ink will add resistance so you may need to experiment and tweak component values to get the effect you want. We've included some images and video of other examples including a traffic lite sticker and an homeage to Above created by Fred Zyda in the guerilla studios @ SIGGRAPH that uses timer and decadal counter ICs.
These are the parts we use to create a 555 timer-based flashing LED circuit:
1. 47k resistor (R1)
2. 100k resistor (R2)
3. 400 Ohm resistor (R3)
4. 10uf capacitor (C1)
6. 2 3 Volt DC CR2032 or better lithium batteries
7. 10mm 3 volt, 30mA LED (of any color)
8. 555NE timer IC Chip