$1 IR control kit from ebay

 This cheap ($0.99 - $1.19) infrared remote control kit from ebay contains small plastic remote controller, VS1838B infrared receiver with mini board from it and piece of cable for prototyping.
 Remote controller gives feels very weird. It's very light - you almost can't feel its weight. Buttons are spongy and some of them (mostly first column) are not giving too much feedback.
 According to description on the back CR2025 should be used. Fortunately more popular CR2032 (3.2 mm instead of 2.5 mm height) fits fine.
VS1838B seems to be equivalent of TSOP1338. Operating voltage range si 2.7V - 5.5.V. "38" stands for carrier frequency this receiver is intended to. If you are planning to use this kind of IR receiver in other kind of application than remote control be aware that IR signal has to be modulated to be received (not cut off by internal receiver filters).
Remote is using NEC protocol, here is captured trace from sensor output:

No comments:

Post a Comment