After 6 months of work I′m totally satisfied with the results.

A fully functional Wrist watch with more than one month of battery duration in standby and multiple functions.

Yellow led are hours and the blue led are minutes, it blinks every odd second.

After 10 second without use, the watch goes to sleep.

It has a DS1307 RTC to keep the time and it has many functions: warning lights , flashlight, battery warning and charge state.

All functions controlled with just one touch sensor.

Rechargeable via micro USB

In the manual you can find all its functions.

Full case .stl files attached

The maximum Litio batt I can fit it is 300mha (30x20x8mm) and I didn't install the JST connector I solder it directly.

Full Manual:

Display the time.

GemaLight watch has 12 RGB LEDs that act as a time of the hours (yellow color in normal mode), as we can find in a common hand clock, in turn each LED marks the minutes in multiples of 5 (blue color, flashes every second), being 0 minutes the LED corresponding to 12hs and 55 minutes the led corresponding to 11hs in a conventional hand clock.

To show the time simply rest your finger on the case on the GemaLight logo in the center of the device, it has a proximity sensor that acts as if it were a button (no pressure is necessary).

The time will be displayed and you can lift your finger, in 10 seconds the clock will go back into power saving mode by turning off all the LEDs, but keeping the time.

To enter the different modes:

To enter options mode:

-If the watch is in power-saving mode; all leds off, perform the action to show the time, lift your finger from the sensor as soon as the time is displayed.

Then rest your finger on the sensor without lifting for 1 second

-If the clock is already showing the time; rest your finger on the sensor without lifting for 1 second.

When performing the action detailed above, you will enter the options mode so that the time will no longer be displayed and the LEDs will start to show the options within the 3 available.

Mode 1: GemaLight (to perform our exercise routine)

Always with your finger on the sensor we wait for the desired option to light up; the led corresponding to the 1hs will light in red to mark the Gemalight mode, we move our finger away from the sensor and the option will be selected automatically. The watch in this mode will not only show the time every second, but will turn on the LEDs in red to achieve the greatest possible visibility at night.

The Light Gem mode has two modes:

-Active mode: every second even, all the LEDs will be lit in red and every odd second the time will be shown, this mode will remain activated until the sensor is activated for one second.

-Relax mode: The time will be permanently displayed on the screen and will illuminate 1 led in red from led 0 to led 11, the full turn of the led that lights up in red is equivalent to 1 sec.

If you want to exit this way; press the sensor again for 1 second, the LEDs will be illuminated in red from 11hs counterclockwise indicating that the GemaLight mode is being deactivated, the time will be displayed again as normal and after 10 seconds the clock will enter energy saving mode.

Mode 2: Flashlight:

Always with your finger on the sensor we wait for the desired option to light up; the led corresponding to the 2hs will light up in white to mark the flashlight mode, we move our finger away from the sensor and the option will be selected automatically.

All leds will be lit in white to function as a flashlight and illuminate our path in our exercise routine or for general use.

To exit flashlight mode rest your finger on the sensor until the time is displayed again.

Time change mode (#3 option):

Always with your finger on the sensor we wait for the desired option to light up; the led corresponding to the 3hs will be shown in orange, we move our finger away from the sensor and the option will be selected automatically.

The time change happens in 2 stages: in the first, the LED will flash in orange and resting the finger on the sensor we will increase the hour from one to one, when we reach the desired time we lift the finger of the sensor, if we leave without touching the sensor for 5 seconds, this will go on to save the last hour that we leave selected and will go on to show the adjustment of minutes.

The LED will go on to flash in blue indicating the selection of minutes with the same procedure as for the hours, we can select the minutes in multiples of 5.

Once 5 seconds pass without touching the sensor the minutes will be selected and so we will have adjusted the time.

IF WE DO NOT SELECT ANY OF THE 3 OPTIONS, THE TIME WILL BE DISPLAYED AGAIN AND WE WILL HAVE TO REPEAT THE PROCESS FROM THE BEGINNING TO ENTER THE OPTIONS MODE.

Low battery warning:

When the main battery is below 15% the LED that marks the time will be shown in red indicating the need to charge our device.

To make the charge we connect the Micro USB cable and the led of the hours will continue to be shown in red indicating that the charging process is underway.

When the charge is in the 100% the led of the hours will go to show in green, once we disconnect our device from the load the LED will become orange again.

Know the load level:

With the clock off we press the sensor for 3 seconds until the LEDs are lit showing the load level, the charge is shown from led 0 (12hs) to led 11, the latter indicates maximum load, the intermediate load levels will be shown illuminating the corresponding LEDs with the color according to the state of the battery , when we see that only the first 3 LEDs are lit in red, (low battery) it is advisable to put the watch to charge.

Tips:

-If the clock runs erratically or unresponsive connect to the load to restart the device.

-Exposing the watch to extreme temperature or humidity conditions can cause the sensor to function erratically or unspeatic.

-If the sensor does not respond keep your finger on it for 5 seconds to restart it

-If you let the battery discharge completely the watch will lose the time, when you connect it to the charge it may not respond immediately because it is too low of charge,give it 10 minutes to restart. Do not immerse in water.