We will insert a insert of size M2.5 in the back plate inside the profile which are located besides rectangular profile. The best way to install a heat insert is to use a pointed tip solder iron. Well you might wonder why modules are being used and not components soldered on PCB, because this being the prototype version of the clock I have decide to go with perf board rather than spending on PCBs.Īfter finalizing every component I used Fusion 360 to design and find the optimal component placing with minimal spacing. The body for the clock will be 3D printed with threaded inserts and bolts to hold things together and every module solder on a perf board. To keep track of time we will use DS1302 RTC module which is a tiny module too.Īnd lastly Arduino Pro Mini as a microcontroller unit with complementary components like passive buzzer and Rotary encoder for user interaction.

To boost the voltage from battery to 5V, XY-016 step up module will be used, as it is much smaller in size. So a 7 segment clock display like the TM1637 module will be used to display time and the acrylic sheet will be placed over it.Īs of power source, Li- ion battery will be used to power the system with TP4056 charging module to charge the battery. So we want something which will actually make the non glowing segments invisible.Īnd here comes our 1st part Translucent Acrylic sheet (which retain shape of objects). If we look at general purpose 7 segment displays which when turned on, the glowing segments are visible as well as the non glowing are visible which actually does not look really nice. The primary goal of he build is to make the clock look more modernized. Single side perf board 7 x 9cm_ x 1 _ Link.Double side perf board 5 x 7xm_ x 2 _ Link.

Small digital clock download