23AWG Single Strand Breadboard Connecting Wire (Black and Red - 1+1 Meter) [C] DIP Switches The MQ7 Sensor has a

The MQ7 Sensor has a small heating element present which is needed to preheat the sensor to get it in the working window

The ULN2003 is a popular Darlington IC

This wick is very useful when you are doing heavy de-soldering work

It measures DC current in the ranges of 200µA

23AWG Single Strand Breadboard Connecting Wire (Black and Red - 1+1 Meter) [C] DIP Switches The MQ7 Sensor has aThis is a set of single strand hook up wires that can be used to make simple breadboard connections during prototyping. They are used as an alternative to the connecting jumper wires. A single set consists of two flexible wires, each of 1 meter length. One wire is of a red colour and the other wire is of a black colour. This a high quality set that creates firm and neat connections. The copper conductors in the wires are tinned to reduce oxidation and