bids are invited for additional items for lab wifi module , l293d motor , 8 channel relay module , 10k potentiometer , color sensor module , adjustable boost buck stepdown up converter , pn522 nfc rfid read write module , the ds3231 rtc module , humidity detection sensor , solar charger module , esp 12e esp 8266 serial port wifi , transceiver module for arduino , toggle switch , 5v mini dot laser diode module 50 nm , xh w1209 temperature control module , hm 10 bluetooth module , photo diode sensor , ldr sensor , sand paper , 3v led bulb , ic lm358 , line filter , 9v batteries , inverter exhaust , transformer small 12v , iot kit , 32 in 1 sensor kit , 3d pen and cartridge , glue stick 2pkt 100 each , glue gunstanley , double side tape , cutter , switch on off up down , cardboard hard sheet foam core board 1 by 1 feet , single channel relay module , small toy car , dc connector , arduino nano , male bergstrip female bergstrip , red and black wires 05 mm , ir sensor module 3pin , matrix keypad 4x4 , resistor box 1k , heart rate sensor , captive touch switch red , micro servo 9g , gear motor total quantity : 1080