541 & DECEMBER 2025

£10.95 | €13.- (DE) | €14.90 (other EU countries) | $13.95 MatterTempera r Interfaces ---- expander for Hardware // I²C MatterHumiditySensor Hum;Occ; // ---- sens MatterOccupancySensor TCA9554 TCA(0x20); // Temp/Humidity met energyRADAR–BASED BL0942 bme; rel BME688 Interfaces ---- bl(Serial1); // expander for // I²C ---- Hardware // bl0942::BL0942 senso TCA(0x20); Temp/Humidity // TCA9554PRESENCE helper energy meter 1(BL0942 control // state){ BME688 bme; // Relay pin, bool bl(Serial1); bl0942::BL0942 void drive(uint8_tDETECTOR to hardware endpoints map true helper 1(pi return control callbacks s); state){ Relay Matter // bool 3V3 // drive(1, pin, s){ tru 3V3 D1 return s); drive(uint8_t R2 setRelay1(bool R1 void BAT R25 Matter-Enabled Controller bool drive(2, GND s){ tru 10k 10k hardware 100R VINreturn BL0942 3V3 to GND3V3IO4 IC1 Q5 IO17 R3 setRelay2(bool AO3400A TX/SD

£10.95 | €13.- (DE) | €14.90 (other EU countries) | $13.95 541 NOVEMBERELEKTORMAGAZINE.COM& DECEMBER 2025 * * SINCE 1961 MatterTempera r Interfaces ---- expander for Hardware // I²C MatterHumiditySensor Hum;Occ; // ---- sens MatterOccupancySensor TCA9554 TCA(0x20); // Temp/Humidity met energyRADAR–BASED BL0942 bme; rel BME688 Interfaces ---- bl(Serial1); // expander for // I²C ---- Hardware // bl0942::BL0942 senso TCA(0x20); Temp/Humidity // TCA9554PRESENCE helper energy meter TCA.write1( BL0942 control // state){ BME688 bme; // Relay pin, bool bl(Serial1); bl0942::BL0942 void drive(uint8_tDETECTOR to hardware endpoints map true helper TCA.write1(pi return control callbacks s); state){ Relay Matter // bool 3V3 // drive(1, pin, s){ tru 3V3 D1 return s); drive(uint8_t R2 setRelay1(bool R1 void BAT R25 Matter-Enabled Controller bool drive(2, GND s){ tru 10k 10k hardware 100R VINreturn BL0942 3V3 to GND3V3IO4 IC1 Q5 IO17 R3 setRelay2(bool AO3400A TX/SDO 510R K1 VDD endpoints C2 bool drive(3, IO5s);IO23 RX/SDI map true; N_IN s){ R4 SCLK_BPS IO16IO19IO20 3V3 161514131211109 5V return 1234567 L_IN R24 1234 s); IO6 68nC3 109876 1M 8 for Appliancescallbacks IO22IO21IO7 SELCF1 D7 MatterAC 5…