Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Programmable IR remote control

Programmable IR remote control

This is a NEC-SIRCS-JAPAN-RC5-SAMSUNG compatible, multiprotocol infrared remote control that replaces up to 6 existing remote controls into one. More protocols can be added later if needed.
The main component is of course the PIC16LF877-04/L processor. Its 8K program ROM handles all inputs, outputs, timings and so on. There are six modes: SLEEP, IDLE, TRANSMIT, RECEIVE, BACKUP & RESTORE.

There are two displays available: LED and/or LCD. So you can choose freely which one suits you best. Naturally, the Nokia LCD gives us much more details as we will see further on.

Power consumption is only a couple of microamps in sleep mode !! The circuit is powered by two AAA batteries (HR03) These may be rechargeable types. The voltage can drop as low as 2,5V. The battery life is several months (although NI-Mh batteries lose 1% of their power each day!)

Sleep mode is activated automatically after 20 seconds of inactivity (no button pressed in idle mode.)

All user data is stored in the 24LC256 i²c EEPROM. It contains 32768 bytes (8 pages of 4096 bytes.) That’s plenty! Pages 0 to 5 (0x0xxx to 0x5xxx) each contain data from the six devices (Aux, TV, Hifi, CD, DVD, Video) we are able to use. Page 6 is unused, page 7 stores all configuration data (f.e. which key is assigned to “PROGRAM” or to the device “DVD”…)

Visit Here for more.







 

More Articles to Read

Design for a Wideband, Differential Transimpedance DAC Output
Design for a Wideband, Differential Transimpedance DAC Output
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Bertan/Spellman 225-20R HV power supply teardown
Bertan/Spellman 225-20R HV power supply teardown
Blinking Christmas Lights
Blinking Christmas Lights
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adding an “extra sense” with rangefinders
Adding an “extra sense” with rangefinders
This wireless game controller looks like a rug
This wireless game controller looks like a rug
How to run your ESP8266 for years on a battery
How to run your ESP8266 for years on a battery
Calibration of a 3-Phase Energy Meter Board on the ADE7754
Calibration of a 3-Phase Energy Meter Board on the ADE7754
Making beats on a tiny Arduino DJ controller
Making beats on a tiny Arduino DJ controller
Qinsi-QS5100 Sn63Pb37 solder profile
Qinsi-QS5100 Sn63Pb37 solder profile
Water Detection System
Water Detection System
Professional Hi-Fi 15W Tube Amplifier circuit
Professional Hi-Fi 15W Tube Amplifier circuit
This Arduino machine will judge how sick your ollies are
This Arduino machine will judge how sick your ollies are
Turn an old payphone into a boombox for ’90s hits
Turn an old payphone into a boombox for ’90s hits
Big F’n 3D printer build
Big F’n 3D printer build
Temperature alarm for boiling milk
Temperature alarm for boiling milk
QuadBot is a 3D-printable walking robot for everyone
QuadBot is a 3D-printable walking robot for everyone
MicroConverter I2C Compatible Interface
MicroConverter I2C Compatible Interface
An Arduino tachometer for your older vehicle
An Arduino tachometer for your older vehicle

Top


Shares