IRMimic™ Trainable IR Remote Control
Transmitter
IRMimic features:
- Simple to train - Can learn up to 16 IR commands, and each can be in a
different format/protocol
- Two different operating modes - Keypad or MCU interface
- LED indicator output - Indicates training is complete
- Small size - 18 pin DIP IC
- Chip operates from 3-5 volts DC
- Standby mode permits battery operation
- Can learn many different IR remote control protocols. Not limited
to a few specific ones.
- In keypad mode, most remote control commands are repeated if key is held
down.
- Kit w/pc board available for easy implementation. (All through-hole
components for easy assembly.)
Add IR remote control of other equipment to your next project.
With IRMimic, just apply power, train the chip with the IR remote control
commands you want to generate, and you're ready to go. Command patterns are
safely stored in internal non-volatile memory. IRMimic can be re-trained many
times if needed.
IRMimic can learn up to sixteen different remote control commands, each in a
different format, if needed.
In keypad mode, up to 16 pushbutton switches, plus the "Learn" switch, can be
connected. Each key controls a different command.
You can also control IRMimic with your favorite microcontroller, using MCU
mode. Just provide 4 code select inputs, a learn input, and a send input.
Based on an 18-pin Microchip® PIC 16LF87 CMOS microcontroller with EEPROM,
IRMimic has been developed to work with most modern IR remote controls and
accompanying equipment. It supports bi-phase, pulse width, and pulse position
encoding techniques, as well as others.
Chip only - $9.95
(plus small per-order
S&H fee)
(programmed, with code protect bit set)
Please download IRMimic chip data sheet. Also,
please take a look at the schematic for the IRMimic pc board and the sample
application schematics.
IRMimic complete kit
In addition to the IRMimic chip, we offer a parts kit, which includes a
double-sided pc board and all components needed to populate it:
Kit includes IRMimic chip, on-board voltage regulator, 38 KHz IR sensor
(works with most remotes, although several modulating frequencies are used),
indicator LED, IR LED, 12" ribbon cable, 14-pin dual row header accepts female
ribbon cable connector (included) for power, control signals. Regulator not
required if 5V DC is available. Board dimensions: 1.25" x 1.9". Please download
IRMimic chip data sheet,
IRMimic assembly instructions,
IRMimic schematic diagram,
parts list, and
IRMimic parts placement guide. Note: You
will need to connect this kit to either some switches, or to a microcontroller
to complete your design. Please see sample application schematics.
IRMimic complete kit - $29.95
(plus small per-order
S&H fee)
IRMimic pc board only - $9.95
(plus small per-order
S&H fee)
Please download IRMimic chip data sheet,
IRMimic assembly instructions,
IRMimic schematic diagram,
IRMimic parts list, and
IRMimic parts placement guide
Note: All parts needed to populate pc board, except the IRMimic chip, can be purchased at www.Digi-Key.com. The
Vishay IR
receivers and many of the other parts can also be purchased at www.Mouser.com. Of course, the easiest way to get
going is to purchase one of our complete kits.
Sample application schematics:
This
schematic shows how a keypad would be connected to the board.
This
schematic shows an MCU being used for control.
This
schematic shows how the board can be controlled in MCU mode with switches.
Here is some information related to
powering IRMimic from batteries.
Here are several circuits (and a
rather thorough analysis of them) for driving the IR LED with a constant
current instead of a simple resistor, so that emitted IR intensity is
relatively independent of battery discharge state. This material
was sent to me by an IRMimic user.
A word about compatibility:
IRMimic was designed to support as many different IR remote control command
formats as possible. Some manufacturers use unusual operating frequencies, or
formats that are simply not supported. IRMimic is not guaranteed to work with
all remotes or equipment, but it should work with most of them. Here is some
information on
equipment that has been tested so far.
Also, different remotes use different "modulation" frequencies. The above kit
includes an IR receiver that is most sensitive to a modulation frequency of 38
KHz. All learned commands are transmitted using a modulation frequency of 37.8
KHz. This value was chosen to work with the widest range of equipment. If the
original remote is operating at a different frequency, you will get reduced
range/sensitivity.
DISCLAIMER: I take no responsibility whatsoever for the use
and/or implementation thereof, or the misuse leading to damage to equipment,
property, or life, caused by the above circuits.
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