MAX30105 Particle and Pulse Ox Sensor

The MAX30105 is an inte­grat­ed opti­cal sen­sor mod­ule designed for par­ti­cle and smoke detec­tion appli­ca­tions. It com­bines inter­nal LEDs, pho­tode­tec­tors, and opti­cal com­po­nents with high sig­nal-to-noise ratio (SNR) and low-noise elec­tron­ics.The mod­ule fea­tures advanced ambi­ent light can­cel­la­tion and reli­able motion arti­fact sup­pres­sion, ensur­ing accu­rate mea­sure­ments in var­i­ous envi­ron­ments. Its com­pact size makes it ide­al for fire alarm sys­tems, smoke detec­tion devices, and even mobile or wear­able appli­ca­tions.Key FeaturesInte­grat­ed LEDs, pho­tode­tec­tors, and opti­cal com­po­nentsHigh SNR for accu­rate detec­tionBuilt-in ambi­ent light sup­pres­sionMotion arti­fact reduc­tion for sta­ble read­ingsCom­pact and easy-to-inte­grate designSuit­able for smoke detec­tion and par­ti­cle sens­ing appli­ca­tionsSpecificationsOper­at­ing Volt­age: DC 5VWork­ing Tem­per­a­ture: ‑40°C to 85°CCom­mu­ni­ca­tion Inter­face: I2C (IIC)Mod­ule Size: 24.6 × 14.5 mmMount­ing: 2 × M3 mount­ing holesPin ConfigurationVCC: Pos­i­tive pow­er sup­ply (5V)GND: GroundSCL: I2C Ser­i­al Clock LineSDA: I2C Ser­i­al Data LineINT: Inter­rupt pin (active low, with pull-up resis­tor)Usage NotesThe mod­ule includes built-in pull-up resis­tors for the I2C data and clock lines, so no exter­nal pull-ups are required.The inter­rupt pin also has a built-in pull-up resis­tor for eas­i­er inte­gra­tion.Com­pat­i­ble with most micro­con­trollers such as Arduino, ESP32, and Rasp­ber­ry Pi.