Motors
SPARKFUN Hobby Motor with Gear 1-3 VDC, ROB-11696
$2.10
1.0 to 3.0VDC Motor but can handle a max load of up to 12VDC
No load speed of 660010% RPM (@1.0V DC, 110mA).
NTE 8-Channel Darlington Array/Driver ULN2803 Equivalent, 2018
$3.81
Ideally suited for interfacing between low−level digital logic circuitry and high−power peripheral loads
High−voltage, high−current Darlington arrays in an 18−Lead DIP type package and feature peak load current ratings to 600mA for each of the eight drivers in each device
Typical loads include relays, solenoids, stepping motors, multiplexed LED and incadescent displays, and heaters