Here's a simple electronic project that can become a gift or gift that will surely connect you with electronics: a reminder. Mounted in a small box, this device reminds people of an immediate message to be seen. The presence of the LED helps draw the attention of who should read the message and when deleted indicates that the message has been received.
The assembly can be made to be used on an office desk or hung on a wall. Using a relatively high value resistor, making the LED light up with moderate brightness saves the batteries that will last a long time.
In figure 1 we have (a) the complete diagram of the apparatus, (b) the assembly and (c) a suggestion of placement in a scrapbook.
Material list
LED - Common LED of any color
S1 - Single Switch
R1 - 1k x 1/8 W - Resistor - Brown, Black, Red
B1- 3V- 2 small batteries
Miscellaneous: battery holder, wire, solder, etc.
