Gikfun OPTOCOUPLER DIP-4 PC817C PC817 for Arduino Diy (Pack of 20pcs) AE1143

Qunqi 5pack MP1584EN Ultra Small DC-DC 3A Power Step-Down Adjustable Module Buck Converter 24V to 12v 9V 5V 3V for Arduino

30 Pcs Double Sided PCB Board Prototype Kit for DIY, 4 Sizes by Paxcoo

MCIGICM 50pcs ic dip lm358 Operational Amplifier Dual op-amp (Pack of 50pcs)

eBoot 6 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Power Supply Step Down Module

AUSTOR 100 Pcs PCB Board Kit Including 30 Pcs Double Sided Prototype Boards and 30 Pcs 40 Pin 2.54mm Male and Female Header Connector(Bonus: 10 Pcs 2P&3P Screw Terminal Blocks and 30 Pcs Jumper Caps)

Chanzon Fast Switching/Schottky / Rectifier Diode Assorted Kit (200pcs 14 Values 1N4001 1N4004 1N4007 RL207 1N5404 1N5406 1N5408 UF4007 FR107 FR207 1N5817 1N5819 1N5822 1N4148) Electronic Assortment

WeiMeet RFP30N06LE 30A 60V N-Channel Power Mosfet TO-220 ESD Rated for Arduino(10 Pieces)

Chanzon 1W Zener Diode Assorted Kit (30 Values x 10pc 3V 3.3V 3.6V 3.9V 4.3V 4.7V 5.1V 5.6V 6.2V 6.8V 7.5V 8.2V 9.1V 10V 11V 12V 13V 15V 16V 18V 20V 22V 24V 27V 30V 33V 36V 39V 43V 47V) Assortment Set

Gikfun Solder-able Breadboard Gold Plated Finish Proto Board PCB DIY Kit for Arduino (Pack of 5PCS) GK1007

HiLetgo 2pcs ESP8266 NodeMCU LUA CP2102 ESP-12E Internet WiFi Development Board Open Source Serial Wireless Module Works Great with Arduino IDE/Micropython (Pack of 2PCS)