You love your coffee in the office, and some time you just can't run out to get one, so you brew your own.
But you can't easily get those nice lovely latte foam tops going. You could purchase expensive machines, but ... well, they are expensive. You can get cheap-oh battery operated ones, but you always are running out of battery juice, and they are not that powerful either.
So purchase one of those non-expensive ones, and follow these steps to give it USB power and more torque.
Tools you will need:
- cheap foamer
- a USB cable that won't be missed
- pliers and/or sharp knife
- soldering gun
You can get away without soldering if you want to, just twist-tie your wires. Messier, but functional.
Step 1: First step.
Step 2: Second.
Also, gently force the two sides of the foamer apart to expose the battery terminals.
By default this particular foamer required two AA batteries (supplying 3V of DC current to the motor).
The motor in this foamer will handle the 5 Volts coming from your computer through USB cable.
And it will also result in a more powerful whipping action.
Step 3: Third step.
It doesn't matter which one makes it to which terminal. The motor will just turn in one direction or in the other, depending on which one gets the positive and negative. Foam will form in your coffee independent of the rotating direction of the motor.
Tie a knot on your USB cable, so that we won't be tugging on the soldering contacts later on.