Tag: IR receiver

Oscilloscope capture of a real IR command annotated with Header MARK, Header SPACE, MARK, SPACE and repeated transmission.

How an IR Remote Control Works: Carrier, MARK, SPACE and NEC Protocol

Written by giux | Published on Sep 6, 2026 | No comments

How an IR remote control works, explained from real oscilloscope measurements: carrier, MARK, SPACE, header, bit timing and NEC identification.

#38 kHz infrared #digital communication #electronics #embedded systems #infrared communication #infrared remote control #IR carrier frequency #IR decoding #IR receiver #IR remote control #IR signal #IR waveform #mark and space #NEC address #NEC command #NEC frame #NEC IR protocol #NEC protocol #pulse distance encoding #remote control protocol

Famiglia di curve del tempo di accensione del LED in funzione della corrente I_SENSE per cinque regolazioni di P_SENS, con P_GAIN mantenuto a circa 500 ohm.

GX-TXT-v3: HOLD Node Dynamics and LED On-Time

Written by giux | Published on Aug 23, 2026 | No comments

GX-TXT-v3 HOLD-node dynamics: burst charging, exponential discharge, LED on-time and sensitivity characterization with GNU Octave.

#2N3904 #analog electronics #BAT54 #capacitor discharge #circuit analysis #circuit measurement #experimental electronics #GX-TXT #GX-TXT V3 #HOLD circuit #HOLD node #infrared remote control #IR receiver #IR Remote Control Tester #LED on time #LTspice #PCB testing #RC time constant #SPICE simulation #transistor circuit

PCB GX-TXT-v3 del ProvaTelecomando IR assemblato e pronto per la caratterizzazione

GX-TXT-v3: IR Remote Control Tester – Circuit Schematic and Assembly

Written by giux | Published on Aug 18, 2026 | No comments

GX-TXT-v3 is a compact IR remote control tester with adjustable gain and sensitivity, 20-second auto-off, PCB layout, and assembly details.

#2N3904 #analog electronics #BAT54 #circuit schematic #circuit testing #Darlington transistor #DIY electronics #electronics project #GX-TXT #GX-TXT V3 #HOLD circuit #infrared detector #infrared remote control #IR receiver #IR Remote Control Tester #IR tester #LTspice #NE555 #PCB assembly #PCB design #remote control testing #sensitivity control #transistor amplifier