00:00Run out of microcontroller pins?
00:02Compare ULN 2003 and versus MCP23017.
00:09MCP23017 add true I2C logic IO.
00:12ULN 2003 and sync high current for relays, motors, solenoids.
00:17Different jobs, but ULN 2003 and win for raw power drive.
00:22Found best bulk deals online right now.
00:24First deal give 10 pieces ULN 2003 and dip pack for $1.34.
00:31Best feature, 7 Darlington pairs handle 50 volts, 500 milliamps each with clamp diodes built right in.
00:38Perfect breadboard starter kit.
00:405-star rating across 4,000 sales mean reliable silicon for pennies per driver.
00:46Second option cost $2.27 for 10-pack dip 16.
00:51Standout point here is batch reliability and packaging quality from high-volume seller.
00:56Worth price jump if want zero bend pins and solid supplier track record over 4,000 happy bench tests.
01:03Third option drop price to $1.09 for 10 units.
01:07Best part, classic DIP-16 through-hole format fits standard breadboards and perfboards instantly.
01:13Drive unipolar steppers like 28 BYJ48 directly from 5-volt MCU without fried logic pins.
01:20Killer value here.
01:23Fourth choice take value crown at $0.67 for 10 chips.
01:27Best feature, pure dirt cheap utility.
01:30Hard to beat $0.07 per IC to drive relays and high-power LEDs.
01:35Over 4,000 sold, flawless 5-star reviews confirm parts run cold and work as expected.
01:41Fifth pick target serious makers, 100 pieces for $10.17.
01:47Best feature, bulk scale.
01:49Drop cost near $0.10 per chip with 50-volt, half-amp pull-down capacity per channel.
01:55Stock bench drawer once, never worry about burning motor drivers again.
02:00Links for all 5 deals sit in description below.
02:03Hit like, smash subscribe for more electronics component breakdowns.
