bids are invited for atl additional items sensors obstacle avoider , triple axis magnetometer , humidity sensor , smoke detection , alcohol ethanol sensor , methane natural gas sensor , methane liquified gas sensor , lpg sensor , highly sensitive carbon monoxide sensor detector , ir transmitter receiver , ultrasonic sensor module , triple axis accelerometer , pir motion detector module , pulse rate heart sensor , relay module 2 channel , relay module 1 channel , big sound microphone module , soil moisture sensor module , touch sensor , metal touch sensor module , rain drop sensor , flex sensor , temperature sensor , temperature and humidity sensor module , force pressure sensor , water flow sensor , sound sensor module , ir sensor module for line following , rfid reader -tags , rf modules tx rx 315 mhz , stepper motor with driver board , dc motor , position servo , small servo metal gear , continuous metal gear servo , small servo plastic gear , 150 rpm bo motor , l298 p motor driver , servo motor testor , 4 wheels , filament for 3 d printer p2 , filament storage box p2 , cardboard , foam core boards , 20 m spool of thick strings of various colours , rubber band , popsicle sticks , wood glue , mini hacksaw blades , hacksaw blades , adapters dc power 5v 2a , adapters dc power 12 v 2a , diy paper microscope total quantity : 7217