Lumens - HavenTechnik

Setting up Lumens is quite simple, and does not require any specialist skills. Caution should be exercised not to reverse connections as this may cause damage to the system.

Features

Lumens is Alternative Energy Solution, the features list for Lumens is listed below:

Solar Charged | Battery Powered Lumens charges via a solar panel, which may be replaced with a DC power supply. Chargeing during the day, the sysytem will store sufficient power to run LED lights for a full evening.
Dual Channels Two LED lights or Banks can be connected to Lumens. Led lights cosume low current and this can provide excellent illumination for a room or an outside area for secuirty purposes.
Day | Night The LDR (Light Dependant Resistor) enables you to adjust the ambient light that will trigger Lumens and switch on the LEDs.
Adjustable Brightness Use the provided tactile buttons to adjust the brightness. This setting is memorised for each time the sun sets, and Lumens switches on.
High Current Charge If bright light is required, draining the battery. The unit's high current charge capability enables the system to recharge quickly once the sun is up.

Specifications

Specifications	Description
Voltage Input (DC Power Supply \| Solar)	16Vdc - 24Vdc
Solar Panel	Min: 18Vdc @500MA
Battery Output Charge Voltage	13.5 Vdc - 15.0 Vdc
PWM Output	Dual Channel @ 12 Vdc, Darlington transistor drive
System Control	Basic Operation: Tactile push buttons on PCB control, On\|Off function. Power out per channel.
Day Night Function	Adjustment via POT on PCB, reference provided by LDR
System Operation	PIC16F1847 - 8 Bit device which controls system, reprogrammeable

Documentation

Video Demonstration	Lumens Demonstration
Brochure	Lumens Brochure
Technical Manual	010-0001_LUMENS_Technical_Manual_1

Customizing your Lumens

Since Lumans utilises a PIC microcontroller, it is possible to create your own hex file with sepcific instructions for the device. You can then reprogram Lumens to do what you want.

The code below illustrates an example application, and is also the default code that is supplied with the Lumens when its delivered. The eaxmple includes code which enables PWM1.

To further enhance the project, you can do the following:

Enable PWM2
Use the I/O to switch the LEDs on / off under certain conditions


            /*
              Lumens V2, (C) 2019
              Device: PIC16F1847
              Frequency: 4MHZ
            */

             sbit UP at RB1_bit;
             sbit DOWN at RB2_bit;
             sbit SEL at RB0_bit;
             unsigned short new_DC, current_DC; temp_DC;
             bit ON;
             bit DUAL;
             bit CHAN2;
             unsigned int LDR; // Light Dependant Resistor RA1
             unsigned int ADJ; // POT Adjust RA0

             void debounce();
             void SetupDevice();
             void PWM_CON();

            void DayNight(){

             LDR = ADC_Read(1);
             Delay_ms(30);
             ADJ = ADC_Read(0);
             Delay_ms(30);
             // As it gets darker, voltage increases

             if(LDR >=ADJ){
                     PWM_CON();
                    }

                    else PWM1_Stop();

             }
 
            void PWM_CON(){

                 PWM1_Init(5000);
                 PWM1_Set_Duty(current_DC);
                 PWM1_Start();
            }

            void SetupDevice(){

                 debounce();
                 new_DC = current_DC = 25;
                 //Peripherals
                 CM1CON0.C1ON =0;
                 CM2CON0.C2ON =0;

                 //Analogs
                 ANSELA=0x3;
                 ANSELB=0x0;

                 //PORTS
                 PORTB = 0x00;
                 TRISB = 0b00000111; // RB0, RB1,RB2 input, RB3 (PWM1) output , RB 6 (PWM2) output

                 //Initialise PWM
                 PWM_CON();
            }

            void debounce(){
                 Delay_ms(300);
             }

            void main() {

                 SetupDevice();

                 do{

                         //DayNight();

                         if (!UP){// If the button connected to RB0 is pressed

                         debounce();

                         if (new_DC < 250)      // Don't go above 250
                         new_DC = new_DC + 25; // increment Duty Cycle by 25
                         RW=1;
                         }

                         if (!DOWN) {   // If the button connected to RB1 is pressed

                         debounce();

                         if (new_DC !=0)        // Don't go below 0
                         new_DC= new_DC - 25; // Decrement Duty Cycle by 25
                         RW=1;
                         }

                         if (current_DC != new_DC) {
                         current_DC = new_DC ;
                         PWM1_Set_Duty(current_DC); // Change the current DC to new value             
             
                         }

                    }while(1);
            }