Blinking card - skeleton page
Images
- schematic
- card internals, photo
- card internals and flashing, video
- some testing
- drive circuit, close up
- SOT23 soldering technique
- breadboard prototype,
two frames to show flashing
I have many more images. One day it could be a blog article.
Parts list (approximate)
The inspiration: 2.0 * 1.25 * 0.5 mm LEDs
72-8406,10 Kingbright KPHCM-2012CGCK 0805 Green SMD LED
72-8402,10 Kingbright KPHCM-2012SURCK 0805 Red SMD LED
Other necessary parts, chosen from what I already had / was buying anyway
47-3374,2 FMMT493 NPN SOT23
50-3116,2 BC847C Diotec Bipolar NPN SOT-23 Transistor 45V
71-0508,2 1uf 16v X7r 0805 Ceram Chip Capacitor
47-1004,6 High Speed Switching Diode 400mW 0805
47-0840,2 0.2A 30V Schottky(2 com.cath) SMT diode SOT23
72-0512 15R 0805 1% Chip Resistor - Pack of 100
34-0635 Copper Track Self Adhesive 33m
01-8000 Wire 7/0.2 Black/100m (bare strands from this)
85-1182 Antex Leadfree Solder 4m Dispenser
87-0700 Brown Flux Jelly - 50g
87-1568 White PVC Insulating Tape - 20m
30swg enamelled copper wire
Several other resistor values from the 0805 1% series
Not yet added
18-3786 PP3 Battery Clip, End Entry 45mm Leads
17-2867 Miniature Crocodile Clip Black
17-2870 Miniature Crocodile Clip Red
Essential tools
---------------
50-9142 Knipex 32 11 135 Relay Adjusting Pliers 135mm
Fine point tweezers
x10 "jeweller's" magnifier, for inspection and super-macro photos
Order codes are suitable to put into http://www.rapidonline.com/SearchResults.aspx?srb=1&dir=1&dis=1&pg=1&ps=60&kw=foo
two frames to show flashing