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usb e kits presents
rgb mood lamp V2

                                                                         


functionality

A very cool rgb mood lamp kit! 
Lay back and watch the fade off/fade on effect between the 3 basic colours!
(R)ed,(G)reen,(B)lue

The kit is based on 2n7000 mosfets arranged on a ring oscillator connection.
Each mosfet is triggered from the output of the previous when a capacitor on the gate of the mosfet gets charged.

The mosfet drives 5 or 6 high brightness straw hat leds through a current limiting resistor.

The leds slowly go to the peak of their brightness (fade on effect) while the capacitor on the base charges until gets full charged and they “stay” there until the capacitor begin to discharges and then we have the fade off effect.

Each mosfet follows the situation of the previous and so the procedure goes on!

After your feedback from the first version we made some improvements

please leave your feedback for the kit or your suggestions for more improvements in the future

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V2 release improvements

1) Reverse polarity protection
2) Bigger pads for easier constructions
3) Better placing of the components for easier constructions
4) The on off switch now is extended from the pcb so you can mount it in your project box
5) More leds per channel for more intensity and better placing for better optical results.
6) Ability to place the led on the bottom side so you can hide the rest of the structure.
7) Bigger heat sink power plates for better heat consumption.

the circuit schematic

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Rgb Mood Lamp Schematic

part list

Ref.      Type                                            Value
C1        Ceramic Capacitor            330nF
C2        Ceramic Capacitor            100nF
C3        Electrolytic Capacitor      22u
C4        Electrolytic Capacitor      10u
C5        Electrolytic Capacitor      22u
C6        Electrolytic Capacitor      22uF
C7        Electrolytic Capacitor      2,2uF
D1        Straw hat LED                      RED
D2        Straw hat LED                      RED
D3        Straw hat LED                      RED
D4        Straw hat LED                      RED
D5        Straw hat LED                      RED
D6        Straw hat LED                      RED
D7        Straw hat LED                     GREEN
D8        Straw hat LED                     GREEN
D9        Straw hat LED                     GREEN
D10     Straw hat LED                     GREEN
D11     Straw hat LED                     GREEN
D12     Straw hat LED                     BLUE
D13     Straw hat LED                     BLUE
D14     Straw hat LED                     BLUE
D15     Straw hat LED                     BLUE
D16     Straw hat LED                     BLUE
D17     Diode                                      1N4148
D18     Diode                                      1N4148
D18     Diode                                      1N4001
FU1     Fuse Glass 20mm            300ma
J1         Usb jack                                 Type B
J2         Terminal Block                   2 pin Dc Input
Q1       n-channel   mosfet              2N7000
Q2       n-channel   mosfet              2N7000
Q3       n-channel   mosfet              2N7000
R1        Resistor 1/4 watt            22
R2        Resistor 1/4 watt           120k
R3        Resistor 1/4 watt           33
R4        Resistor 1/4 watt           1M
R5        Resistor 1/4 watt           22
R6        Resistor 1/4 watt           560k
SW1   jst 2 pin cable                    ON/OFF Switsh

construction help guide

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resistor color code definition
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2n7000
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Standard 5mm pitch terminal blocks
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1n4148
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1n4001
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lm7805
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led
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jst 2 pin female pcb mount
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jst 2 pin male cable
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click for soldering and prototyping assistant


downloads

rgb_mood_lamp_v2_datasheet.pdf
File Size: 143 kb
File Type: pdf
Download File

rgb_mood_lamp_v2_merged.pdf
File Size: 753 kb
File Type: pdf
Download File


Use something to put inside the kit and make your rgb mood lamp
or place the kit behind your tv or desktop monitor!

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