Difference between revisions of "Arduino/RFID-Reader"
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'''Resistors:''' | '''Resistors:''' | ||
* 8K | * 8K | ||
| − | * 2 x 12K | + | * <s>2 x</s> 12K |
| − | * 2 x 100K | + | * <s>2 x 100K</s> |
| − | * 220K | + | * <s>220K</s> |
* 1M | * 1M | ||
'''Capacitors:''' | '''Capacitors:''' | ||
| − | * 2 x 1nF | + | * <s>2 x 1nF</s> |
* 7nF | * 7nF | ||
| − | * 15nF | + | * <s>15nF</s> |
* 2 x 100nF | * 2 x 100nF | ||
Revision as of 21:06, 7 November 2012
| Projects | |
|---|---|
| Participants | |
| Skills | etching, soldering, tweaking |
| Status | Getting parts |
| Niche | Electronics |
| Purpose | Use in other project |
For use in Doorbot.
An rfid reader could be made using an arduino, a simple circuit, and winding our own antenna: [1]
The fobs we want to read are of the Proxkey IIII variant which operate at 125kHz: [2]
Bill Of Materials
Resistors:
- 8K
-
2 x12K -
2 x 100K -
220K - 1M
Capacitors:
-
2 x 1nF - 7nF
-
15nF - 2 x 100nF
Op-amps:
- 2 x LM324N
Diodes:
- 1N914
Coil:
- 35 turns @ 3.25"D
