Let's make MARV!
Part one - Resistors
The first components you will need while assembling MARV are resistors.
First, take off the paper packaging placed on both ends of resistors.
Now, you should gently bend them in the shape of the letter U, but be careful because they could break easily.
Place them as shown in the picture below:
Now is the time to use your soldering iron and solder resistors on MARV's back.
After you solder all resistors, take one more look at the solder joints to ensure there are no cold joints.
Watch out! Cutting off the resistors’ legs must be done with caution!
Take out your cutter pliers. You will use them for cutting off the excess legs of your resistors.
Be careful!
Do not point the legs upwards when cutting them!
They might fly away and hurt someone!
They might fly away and hurt someone!
When cutting them off, always turn the legs of the electronic component towards your table like this:
Part two - The switch
Now you’ll be soldering the switch.
Place the switch on the front side of MARV’s head.
You'll need to use a bit of strength for this since it can be a bit hard for the switch to come into the circuit board.
Now is the time to solder the switch to the circuit board.
Before you do so, please make sure that the switch is vertical to the circuit board.
Please clean your soldering iron tip with the sponge before soldering the switch.
Soldering these pins requires a bit more precision since they are very close together.
The switch’s soldering joints should look like this after you have successfully soldered them:
Part three - The pushbutton
Now, let’s solder the pushbutton!
Make sure the pushbutton is placed vertically to the board before soldering.
After putting it on the circuit board, press the pushbutton a few times to check that everything is okay.
Turn MARV around, take the soldering iron, and solder away.
Part four - The LEDs
Now, take the LEDs and place them in MARV’s eyes.
We need to watch out for the polarity of the LEDs, or they won’t work.
The shorter leg of the LED should face the switch like this:
Flip your MARV and solder away.
After making sure there's no bridging between the solder joints, take your pliers and cut off the rest of the LEDs' legs that you don't need.
Watch out!
The legs of the LEDs must face towards the table when you are cutting them.
This way, they won’t fly away and hurt you!
Part five - The battery holder
Place the battery holder like this:
Now, turn MARV around and solder the battery holder’s two pins.
And we’re done with soldering!
Please turn off your soldering iron by unplugging it from the power outlet.
Leave it on the soldering iron stand for at least five minutes, so it cools off before you put it away.
Batteries first
Now you can put the coin cell battery into the battery holder!
Watch out; the battery needs to be put in on the right side.
The tiny plus (+) sign on the battery must be facing upwards!
Check the photo:
You did it! MARV, the wacky robot, is assembled.