Archive for the ‘microcontrollers’ Category


Neodymium Magnets and Coin Cell Batteries. These are used to power up a TI Launchpad MSP430.

Video included.

Continue reading ‘MSP430 Tricks with LED’s, Capacitors, and Neodymium Magnets’ »


Want to know how much power the MSP430 uses?  I show a way to reduce the power consumption of the Launchpad by 97%.  Read on and see the video.

Continue reading ‘How Much Power Does MSP430 / TI Launchpad Use?’ »

When driving LED’s with a microcontroller, chances are you won’t have enough power coming out of the microcontroller’s pins to power an LED. For example, the TI Launchpad MSP430 only allows for a reliable 1.5mA of power out of each pin. To drive an LED, you might want more like 20mA. So you will need an external circuit to safely drive the LED.

Circuit I used to drive an LED with TI Launchpad MSP430.

Circuit I used to drive an LED with TI Launchpad MSP430.

Read on and see the video.

Continue reading ‘Calculate Resistor Values for Driving LED’s’ »


A TI Launchpad with MSP430 microcontroller on my home-made battery pack made from scrap.

Can you power a MSP430 with regular AA batteries?  The answer is yes.  In the video, I show how scrap parts can be used to make a free battery pack.  Video included after the break…

Continue reading ‘TI Launchpad MSP430 Powered by AA Batteries’ »

Review of a 12V splitter.  This is also called a 3-way cigarette lighter adapter .

12V adapter-splitter review

12V adapter-splitter review

This adapter plugs into a single 12V battery outlet and splits it into three outlets.  Could be used to power three gadgets from your car or from wherever else you have a 12V outlet.  I have one in my house for off-the-grid backup power.

Video review…

Continue reading ‘12V Three-Way Adapter’ »