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<H2>Wireless controlled lightdimmer</H2>
<P>The meaning from this design is to build it in -i.e. a shaded lamp- and to
switch this lamp on and off the normal way, just like it was switched before the
dimmer was build in, then you could by exception dimming the lamp more or less
with your TV remote control.<BR>When you switch the power on there will follow a
soft-start till the lamp burns at the previously adjusted dim level.<BR>With the
'0' button in TV mode you can dim the lamp, turn more and less bright.<BR>The
remote control should send more then one RC5-signal per button-press seeing that
the first one is ignored, this does imply that when the remote button is pressed
a short time, there nothing happens.<BR>With the P+ and P- button from a system
at choice you can adjust the maximum and minimum dim-levels and with the '1'
button the start-up brightness.<BR>The next time when the 230V power is switched
on the lamp starts up at the adjusted dim-level.</P>
<P><IMG height=480 src="lichtdimmer_uk_dosyalar/dimmer_tv-remote.jpg" width=640
border=0><BR><I>Dim your lighting with your self made PCB and a normal TV remote
control.</I><BR> </P>
<P><B>(Re)adjust the dim-levels:</B><BR>(only necessary when changing the
maximum-, minimum- or start-up- level)<BR>First you should select an unused
system on your remote control, i.e. SAT, AMP, VCR2 or DCC mode.</P>
<P><U>Adjust maximum level:</U> Keep, while switching the power on, the P+
button from the remote control pressed and wait until the lamp burns on desired
maximum level.</P>
<P><U>Adjust minimum level:</U> Keep, while switching the power on, the P-
button from the remote control pressed and wait until the lamp burns on desired
minimum level. Recommended is to adjust the minimum dim level not to "lamp off"
level, because then it's easy to forget to switch the power off and use
unnecessary power.</P>
<P><U>Adjust start-up level:</U> Keep, while switching the power on, the '0'
button from your remote control pressed and wait until the lamp burns on desired
level.</P>
<P><U>Re-adjust the default values (reset):</U> Keep, while switching the power
on, the MUTE button from the remote control pressed.</P>
<P>During adjusting the dim-levels, the dim-level changes slower then normal to
make adjusting easier.<BR>When letting the button loose and the adjustment is
ok, the red- en green LED blinks for a while.<BR>With the -for the dimmer
reserved- system selected on the remote control, the P+ (dim-level up) / P-
(dim-level down) and button '0' (up/down turn by turn) works too.<BR>Button '1'
dims directly to the adjusted start-up level.<BR>Which system on the remote
control is choosen doesn't matter, the '0' button works always in the TV-mode
too.</P>
<P>Above described applies to the here downloadable .BAS and .HEX examples, but
you can ofcourse modify it to your own wishes.<BR>Keep in mind that a remote
control does not always send that what you expected.<BR>The volume from TV, SAT,
VCR1 and VCR2 are all the same.<BR>Just as the volumegroup from TAPE, TUNER, CD,
etc.<BR>And the '0'-'9' buttons from system TAPE for example send nothing at
all.</P>
<P>See the lists: <A href="http://www.picbasic.nl/rc5slijst.htm">RC5 system
codes</A> and <A href="http://www.picbasic.nl/rc5clijst.htm">RC5 command
codes</A></P>
<HR>
<P><IMG height=480 src="lichtdimmer_uk_dosyalar/dimmer_cmp.jpg" width=640
border=0><BR><I>The components, a transformer isn't used here.</I><BR> </P>
<TABLE cellSpacing=0 cellPadding=2 border=0>
<TBODY>
<TR>
<TD>PCB</TD>
<TD>101226 (or etch it self ofcourse)</TD></TR>
<TR>
<TD>PIC</TD>
<TD>12F629 with program 'RC5 dimmer_UK'</TD></TR>
<TR>
<TD>IC</TD>
<TD>U2008B</TD></TR>
<TR>
<TD noWrap>Optocoupler</TD>
<TD>4N25</TD></TR>
<TR>
<TD>Triac</TD>
<TD>TIC226</TD></TR>
<TR>
<TD>LED</TD>
<TD>Red en green, 3mm</TD></TR>
<TR>
<TD>IR receiver</TD>
<TD>TSOP1736</TD></TR>
<TR>
<TD>Regulator</TD>
<TD>78L05 small voltage regulator (TO-92)</TD></TR>
<TR>
<TD>Transistor</TD>
<TD>BC517 <I>don't replace with "just another NPN type" (= NPN
darlington)</I></TD></TR>
<TR>
<TD>Diode</TD>
<TD>1N4007</TD></TR>
<TR>
<TD>Resistor</TD>
<TD>180E + 470E + 2k2 + 4k7 + 6k8 + 8k2 + 10k + 18k + 68k + 680k</TD></TR>
<TR>
<TD>Resistor</TD>
<TD>11 Watt / 8k2</TD></TR>
<TR>
<TD>Capacitor</TD>
<TD noWrap>10n + 3x 100n + (1礔 + 2x 2,2礔 tant) + (47礔/16V + 220礔/25V
electrolytic, radial)</TD></TR></TBODY></TABLE><BR>
<HR color=#ffff66>
<P><FONT color=#ffff66><BLINK>
<MARQUEE scrollAmount=1 scrollDelay=0 behavior=alternate width=219
height=18>ATTENTION, HIGH VOLTAGE!</MARQUEE></BLINK><BR>Watch out when building
this project, seeing that the whole PCB is under life line high
voltage!!!<BR><B>Don't program the PIC in the PCB with --in circuit
programming-- !</B><BR>Seeing that this PCB doesn't use a transformer, the whole
PCB is under high 230V network voltage.<BR>The PIC as well!<BR><BR>The 11 Watt
resistor can be very warm (60癈), beware for burning or melting materials and
bodyparts!</FONT></P>
<HR color=#ffff66>
<P><IMG height=480 src="lichtdimmer_uk_dosyalar/dimmer_cmpzijde.jpg" width=640
border=0><BR><I>Some parts doesn't fit 100% on this proto-type, but the original
PCB is corrected (see bottom photo).<BR>The triac doesn't get warm so the upper
metal part can cut off eventually.</I><BR> </P>
<P><IMG height=246 src="lichtdimmer_uk_dosyalar/dimmer_zijaanzicht.jpg"
width=640 border=0><BR><I>The 11 watt resistor becomes pretty hot (60癈 is
normal in this case).<BR>That's why you should solder the resistor with
bootlace-ferrules a bit higher on the PCB.<BR>It's important that you bend the
two wire's from this resistor on the solderside from the PCB<BR>before you
solder it.</I><BR> </P>
<P><IMG height=480 src="lichtdimmer_uk_dosyalar/dimmer_isolatie.jpg" width=640
border=0><BR><I>To keep the PCB compact, a big connector is omitted.<BR>The
connect-wire's are soldered directly on the PCB's solderside.<BR>Isolate after
testing the solderside from the PCB with a hotmelt
glue-pistol.</I><BR> </P>
<P><IMG height=500 src="lichtdimmer_uk_dosyalar/schema_dimmer.gif" width=721
border=0><BR><I>When only the part on the rightside from the optocoupler is
build, thus without PIC, 78L05, TSOP1736, etc.<BR>then increase R7 from 8k2 to
22k.<BR>Then it's also possible to change the resistor in a smaller (2W )
type.</I><BR> </P>
<P><IMG height=199 src="lichtdimmer_uk_dosyalar/pcb_101226.gif" width=257
border=0> <IMG height=199 src="lichtdimmer_uk_dosyalar/cmp_101226.gif"
width=257 border=0> <IMG height=199
src="lichtdimmer_uk_dosyalar/pcb_101226.jpg" width=257 border=0><BR> </P>
<TABLE cellSpacing=0 cellPadding=2 border=0>
<TBODY>
<TR>
<TD><IMG height=13 src="lichtdimmer_uk_dosyalar/bulletrondje.gif" width=13
border=0></TD>
<TD noWrap><A href="http://www.picbasic.nl/downloads/RC5_DIM.HEX">Download
RC5_DIM.HEX, <I>V-1</I> to program in a PIC12F629</A></TD></TR>
<TR>
<TD vAlign=top></TD>
<TD>Download RC5_Dimmer_V-1_ UK.bas, the sourcecode for PIC
Basic<BR><I><FONT color=#ffff66>+++ Sourcecode not available (Else look at
the Dutch part) +++</FONT></I></TD></TR>
<TR>
<TD vAlign=top><IMG height=13
src="lichtdimmer_uk_dosyalar/bulletrondje.gif" width=13 border=0></TD>
<TD><A href="http://www.picbasic.nl/downloads/SCH_101226_dimmer.pdf"
target=_blank>Download scheme as PDF file</A></TD></TR>
<TR>
<TD><IMG height=13 src="lichtdimmer_uk_dosyalar/bulletrondje.gif" width=13
border=0></TD>
<TD><A href="http://www.picbasic.nl/downloads/PCB_101226.pdf"
target=_blank>PCB layout 101226 as PDF file</A></TD></TR>
<TR>
<TD><IMG height=13 src="lichtdimmer_uk_dosyalar/bulletrondje.gif" width=13
border=0></TD>
<TD><A href="http://www.picbasic.nl/downloads/U2008B.pdf"
target=_blank>Datasheet U2008.pdf</A></TD></TR></TBODY></TABLE></BODY></HTML>
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