Things You Can Do With a Video Greeting-card

This is just a bunch of ideas to do with video greeting cards.

Please use at your own risks. Be aware, that the Li-Ion Battery pack is dangerous if handled wrong.

You have another idea? Leave a comment!

You need at least one video greeting card :)

You can build your own small videoplayer with the parts of the card.

To unlock you need to plug it into a PC to set it to loading mode. Push various combinations (for example 2 times + and 3 times -) on the card to enter the USB-storage mode. The display will show a message (see photo).

Please be careful with the battery-pack. A shortage may result in a fire!

If you want to use the display without the battery, you need to connect the USB Power-Supply to the pins of the battery (bat+ and bat-) on the board. I've connected a little diode in line to drop the voltage for about 0.7V. This should increase the lifespan of the board.

Please be aware, that in this case it's not possible to get the card into the loading mode which you need to set it to USB-Storage-mode. I have implemented a small switch, which alternates the power-supply-input to the respective pins.

You can print a new case and glue the components inside of it. You can use my case-design, which I uploaded here.

Use the Li-Ion battery pack to power your christmas decoration.

Please be careful with the battery-pack. A shortage may result in a fire!

My christmas light hat originally a battery pack of three mignon batteries (3*1,5V). It was connected to a 20ohm resistor. As the Li-Ion battery pack has about 3,7V I changed the resistor to 10ohm.

For safety reasons I soldered a fuse (200mA) in line.

To be able to recharge the battery pack, I connected it to a connector. I'm now able to charge it in a firesafe place!

My videoconsole controller was broken, as the battery pack was dead (fully discharged).

As the specifications were identical, I was able to replace it with the one from the card.