The Infrared Plug is a small board which can send and receive modulated infrared signals, as commonly used by many remote controls and appliances around the house.
The board uses a CMOS 555-timer chip to generate the 38 KHz carrier frequency, and requires no further adjustments due to the use of 1% precision parts. An on-board transistor controls one or two IR emitter LEDs (? 50 mA for one LED, or ? 10 mA for two).
There is one solder jumper on the back side of the plug. When shorted out, a single IR LED mounted in the outer position will be pulsed at ? 50 mA. When no solder jumper is present, both IR LEDs must be used - they will be driven at ? 10 mA. This allows for different range and positioning trade-offs. E.g. by pointing the two IR LEDs slightly away from each other, you can increase the angle at which IR light is emitted.
Dimensions: 21.1 x 24.1 mm
CadSoft EAGLE design files: see below.
This board uses the conventions of a JeePlug and can be used with the ports on a JeeNode. It can also be used with other boards and MCU’s, if you hook it up properly and adapt the interface code for it.
How to Get It¶
Related Weblog Posts¶
- 2010-11-12 - Meet the Infrared Plug