70016 Parallax Inc, 70016 Datasheet - Page 174
70016
Manufacturer Part Number
70016
Description
TEXT INFRARED REMOTE FOR BOE-BOT
Manufacturer
Parallax Inc
Datasheet
1.70016.pdf
(212 pages)
Specifications of 70016
Accessory Type
Manual
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Boe-Bot®
For Use With
29122 - KIT PARTS IR REMOTE FOR BOE-BOT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
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How IR Communication Works
The universal remote sends messages by strobing its IR LED at 38.5 kHz for brief
periods of time. The actual data is contained in the amount of time each strobe lasts.
There are many different IR protocols, but, in general, the amount of time each 38.5 kHz
signal lasts transmits some kind of message. One duration might indicate the start of a
message, while another indicates a binary-1, and still another indicates a binary-0.
The IR detector's output pin sends a low signal while it detects the 38.5 kHz IR signal,
and a high signal while it does not. So, a low signal of one duration might indicate the
start of a message, while another indicates a binary-1, and still another indicates a binary
0. This communication scheme is called pulse width modulation (PWM), because when
graphed against time, the IR detector's high/low signals form pulses of different widths
that correspond to their durations.
Kit Contents*
Infrared Remote Parts List:
(1) 020-00001
(1) 350-00014
(1) 150-02210
(1) 800-00016
*Two alkaline AA batteries sold
separately
10
Universal Remote and
Universal Remote
Manual
IR detector
Resistor – 220 Ω
Jumper wires – bag of
3 2 1
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