user34880: I want to make a small and compact gas sensor using the Arduino Uno and MQ2 sensor. However all sites list a breadboard as a requirement.
Now, the MQ2 has A0, D0, GND, VCC, pins and the Uno also has A0, GND, 3.3V and 5V connectors.
So can I use Male to Female Jumper Wires to directly connect these? I am not using anything else like LEDs or speakers.
My code keeps the inbuilt LED ON when smoke level is LOW and blinks when the Level is HIGH. Also will I need any resistor for it?

user-1: This is point-to-point wiring, a technique loved by high-end audio amplifier fans:


34880: <p>I want to make a small and compact gas sensor using the Arduino Uno and MQ2 sensor. However all sites list a breadboard as a requirement.</p>

<p>Now, the MQ2 has A0, D0, GND, VCC, pins and the Uno also has A0, GND, 3.3V and 5V connectors.</p>

<p>So can I use Male to Female Jumper Wires to directly connect these? I am not using anything else like LEDs or speakers.</p>

<p>My code keeps the inbuilt LED ON when smoke level is LOW and blinks when the Level is HIGH. Also will I need any resistor for it?</p>
 -1: <p>This is point-to-point wiring, a technique loved by high-end audio amplifier fans:</p>

<p><a href="https://i.stack.imgur.com/ooCJV.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ooCJV.jpg" alt="point-to-point"></a></p>
