TIP35c 100v 25A NPN Power Transistor

DTECH DT-5019 USB To RS485/422 Industrial Converter Serial Line Communication Adapter(1.2m)

8aa back to back battery holder

2k 1/4w carbon film resistor

ca3140 op amp

nano io shield v1.0 expansion board

DC12V 0.43A 4mm Mini Electromagnetic Solenoid Lock Push Pull Type for Electirc Door Lock

HLK-PM03 Hi-Link 3.3V 1A 3W AC To DC Power Supply Module

HLK-5M12 Hi-Link 12V 0.42A 5W AC To DC Power Supply Module

HLK-20M09 Hi-Link 9V 2.2 A 20W AC to DC Power Supply Module 

HLK-PM01 AC-DC 220V to 5V 0.6A 3W Step Down Buck isolated power supply module Hi-Link

pixy 2nd generation CMUcam5 image recognition