user30187: I want to make my alarm clock “smart”. I'm very new to this stuff, that is, the hardware side. The programming shouldn't present too many problems.
I’m currently experimenting with a simulator (http://circuits.io) and want to start with controlling the alarm’s buzzer with my Arduino.
I did some reading on transistors and this is what I came up with:
I’ve turned pin D3 to high and hooked it up to the base of a NPN transistor. I’m trying to run 1.5V through the transistor, but nothing happens. Any thoughts?


user30185: You simply need to ground the circuit. In row E on your breadboard just under where you connect the - of the battery, connect that to the ground pin on the UNO. This causes the buzzer to start working.

30187: <p>I want to make my alarm clock “smart”. I'm very new to this stuff, that is, the hardware side. The programming shouldn't present too many problems.</p>

<p>I’m currently experimenting with a simulator (<a href="http://circuits.io" rel="nofollow noreferrer">http://circuits.io</a>) and want to start with controlling the alarm’s buzzer with my Arduino.</p>

<p>I did some reading on transistors and this is what I came up with:</p>

<p>I’ve turned pin D3 to high and hooked it up to the base of a NPN transistor. I’m trying to run 1.5V through the transistor, but nothing happens. Any thoughts?</p>

<p><a href="https://i.stack.imgur.com/uKccf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uKccf.png" alt="Circuit that I came up with."></a></p>
 30185: <p>You simply need to ground the circuit. In row E on your breadboard just under where you connect the - of the battery, connect that to the ground pin on the UNO. This causes the buzzer to start working.</p>
