LIRC, IR Transmitter [ irsend ]

Schematic (with Raspberry Pi)

(yellow, 3.5mm middle) PIN 17 [3.3V] ==> + IR LED - ==> [GND] PIN 06 (black, 3.5mm peak)

# irsend SEND_ONCE SHM38K KEY_OK

IRSEND OPTION
-- Help
-h --help display usage summary
-v --version display version
-d --device use given lircd socket [/var/run/lirc/lircd]
-a --address host[:port] connect to lircd at this address
-# --count n send command n times

-- DIRECTIVE can be:
SEND_ONCE - send CODE [CODE...] once
SEND_START - start repeating [CODE]
SEND_STOP - stop repeating [CODE]
LIST - list configured remote items
SET_TRANSMITTERS - set transmitters NUM [NUM...]
SIMULATE - simulate IR event


Remote configuration file: /etc/lirc/lircd.conf

As reference file, this config supports 2 remote units SHM38K & SHARP.

Verify-1: Key code with RCU key mapping.
# irsend LIST lircd.conf ""
   ==> "lircd.conf" is remote/RCU name, not a file name.
   ==> That name shall same with second line of "name" on lircd.conf.
   ==> If name is "SHM38K", the command should be [ # irsend LIST SHM38K "" ].

Verify-2: RCU singal response
# irw

note that if nothing response ==> try to
step-1: kill lirc d process 
step-2: restart lirc "/etc/init.d/lirc restart".

SEND A IR SIGNAL

# irsend SEND_ONCE SHARP KEY_POWER or # irsend SEND_ONCE SHM38K KEY_POWER

Result on irw