You can create your own keychain pocket watch circuit. Perhaps the most representative of this circuit is printed form, and we have departed from the classic rectangular or square design and have drawn as a circle. The diameter of the printed keychain pocket watch circuit board is 18 inches. Circle-shaped cut is quite laborious, but not impossible. Anyway, those who do not dare to cut the PCB with this form; they can simply use a basic 18 cm square PCB side with the picture that we propose in the center.
To build the keychain pocket watch PCB design you just use basic materials. Get tutorials that can be downloaded online in PDF format, and print the footsteps of our tutorial "How to build your own watch circuit." The PCB can be built using the method explained here.
Components
The list of components we will be using is quite extensive, but fortunately it is low-cost components, so it is a project within reach of all budgets.
Once everything is in place, and before putting the ICs into the sockets, we can feed the little keychain pocket watch and check the output of each have 5V voltage regulator. We can also measure the voltage at the pins of the sockets in charge of each integrated feed, to avoid any unpleasant surprises. Between pins 7 and 14 of each 74HC164N should have 5V as well as between 5 and 14 pin socket for the microcontroller.
If all is well, we can integrate every part in place, taking care not to put them in the opposite direction. Below we will see how to program the microcontroller for top watch functionality.
The software
We saw how to develop the hardware, and now begin to see how to take advantage of this design, explaining each of the routines needed to transform that pile of components into something useful. We write software from scratch, explaining each of the keychain pocket watch project steps so that everyone can fully understand each of the routines, and thus be able to modify it. We decided to present versions of CCS PIC BASIC and every piece of code as a way to reach a greater number of readers.
We have resolved upon the mechanism that every second makes a pudding up (something that we will see in the next issue, using interrupts), we should write a routine (or function, if we use CCS) to update the display and "seconds" as appropriate. Each time determined a "flag" would be "1", and the main body of the program should update the time and display it in the display.
Each of the keychain pocket watch segments (and the decimal point) of each display is connected through a resistor that limits the current flowing through them, one of the outputs from the 74HC164N. These are connected in a "cascade", so that when a data "out" of one of them will be applied to the input of the next. This means that with only two pins (CLOCK and DATA) we can write the 4 displays.
Personalized keychain pocket watch is the Perfect Choice
Men, tend to be harder to shop for then women for some reason. So many times we've given male family members flashlights, tool boxes, tool sets and such, because we just don't know what to give them or where to find great, charming gifts for them. Now of course, that's all different since locating some fantastic gifts (for birthdays, holidays, or fathers day) to give to the men in our lives.
Pocket Watch History
Early clocks were driven by hanging weights. Since they depended on gravity to work properly, they had to be firmly mounted on the wall or in a case. But by the 1400s, it had been discovered that a clockwork mechanism could be powered by a coiled spring instead. This led to the development of the first portable clock by Peter Henlein, a German metalworker, in the early 16th century (some sources credit Henlein with inventing spring-powered clocks, but this is disputed).
A Little Black Dress Takes You Everywhere
Coco Chanel is said to have invented the idea of a little black dress. Whether that is true or not, each decade produces enough homage to the concept that it has become synonymous with chic.
