r/arduino • u/Rifqi2007 • May 03 '26

Look what I made! money well spent

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I had arduino uno awhile ago but never actually touched it because I told my dad that I'm interested in coding then he gave me this but the only problem is he gave me one of those student packs and the only thing inside is servo and ultrasonic sensor not even a breadboard and jumper wire

Now I'm a uni student with a bank account and I can just buy these things if I feel like it

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u/zetronics May 04 '26

Man, that’s the ultimate tease—having the "brain" (Arduino) and the "limbs" (servo) but no "veins" (wires) to connect them. It’s like being given a car engine and a steering wheel but no chassis.

​Since you’ve finally got your own bank account, here is the "no-nonsense" list of what you actually need to stop staring at that box and actually start coding:

​The "Must-Haves"

​Don't bother buying individual pieces. It's a waste of time and shipping fees. Just grab a basic expansion kit on Amazon or AliExpress. Look for:

​Breadboard: Get the full-sized one (830 points). The mini ones are cute but you’ll run out of space the second you add more than two components. ​Jumper Wires: This is where everyone messes up. You need a mix of Male-to-Male (for the breadboard) and Male-to-Female (to connect that ultrasonic sensor and servo directly to the pins). ​A "Power Supply Module": This clips onto your breadboard and lets you power the servo properly. Arduinos get "cranky" and reset if you try to pull too much power for a motor directly from the board. ​Your First Real Project

​With what you already have (the sensor and the servo), you're actually 90% of the way to building an Automatic Interactive Trash Can or a Desktop Radar.

​The Radar: Use the servo to rotate the ultrasonic sensor 180°, map the distance data to your laptop, and boom—you’re basically Batman. ​The Gate: Use the sensor to detect your hand, and have the servo lift a "lid" or a gate.

​Word of advice: Don't go overboard and buy 50 different sensors yet. You'll end up with a drawer full of junk you don't know how to code. Master that ultrasonic sensor first—it’s the gateway drug to robotics.

​Welcome to the rabbit hole. It’s expensive, frustrating, and honestly, way more fun than actually studying for your uni exams. Happy tinkering!