Back to the first page      Next page     New 24 Jan 2003: Thru-hole version with single sided PCB

Available files for the SMD-version:

Schematic in high resolution (pdf)
PIC assembler source V1.02 (txt)

Download all files including EAGLE *.sch and *.brd (made with freeware version 4.09r1) as well as PIC *.hex (zipped, 149KB)
Note: If you use EAGLE to open and print the layout, do not forget to draw the GND planes by typing 'ratsnest' in the command line, followed by 'ENTER'. The freeware version of EAGLE is available here.

27 Jan 2003: One resistor added from DTR of the RS232 interface to the PIC micro. Enables receiving commands from LIRC's rc.

Here is the schematic of the SMD-version ...
Schematic
... and the layout (scroll further down for the version with standard thru-hole components):    [Top of page]
Layout

 

 

Available files for the thru-hole components version:    [Top of page]


Schematic in high resolution (pdf)
1:1 Layout in high resolution and top overlays with designators / values (pdf)
PIC assembler source V1.01 (txt) (same as for the SMD-version)

Download all files including EAGLE *.sch and *.brd (made with freeware version 4.09r1) as well as PIC *.hex (zipped, 350KB)
Note: If you use EAGLE to open and print the layout, do not forget to draw the GND plane by typing 'ratsnest' in the command line, followed by 'ENTER'. The freeware version of EAGLE is available here.

This circuit is slightly modified:

- Reed-relays for reset and power (no need to find out which pins of the motherboards' pinheader are ground)

- It is possible to connect two separate LEDs instead of one bicolor LED

- One resistor added from DTR of the RS232 interface to the PIC micro. Enables receiving commands from LIRC's rc (new PIC code necessary).

 

This is the schematic of the thru-hole components version ...    [Top of page]
Schematic_TH
... and this is the layout:    [Top of page]
Layout_TH

 

Parts list for the thru-hole components version (all parts available at www.reichelt.de):    [Top of page]

Note: R=ohms, k=kohms, 0204 is the size of the resistors.

Designator Type Reichelt Elektronik # Remarks
R1 100R 0204 METALL 100  
R2 10k 0204 METALL 10,0K  
R3 100R 0204 METALL 100  
R4 1k 0204 METALL 1,00K  
R5 10k 0204 METALL 10,0K  
R6 10k 0204 METALL 10,0K  
R7 10k 0204 METALL 10,0K  
R8 150R 0204 METALL 150 Replace by a wire jumper if a bicolor LED as listed below is used
R9 10k 0204 METALL 10,0K  
R10 150R 0204 METALL 150  
R13 1k 0204 METALL 1,00K  
C1 22pF ceramic 2.5mm KERKO 22P  
C2 22pF ceramic 2.5mm KERKO 22P  
C3 100nF ceramic 2.5mm X7R-2,5 100N  
C4 10µF/35V electrolytic RAD 10/35  
D1 1N4148 1N 4148 Not needed if listed reed relays used!
D2 1N4148 1N 4148 Not needed if listed reed relays used!
T1 BC327-40 BC327-40 Or any other similar PNP, e.g. BC557
REL1 Reed relay, 1 NO contact, 5V/500R, with diode SIL 7271-D 5V Alternatively without diode, but then D1/D2 must be used!
REL2 Reed relay, 1 NO contact, 5V/500R, with diode SIL 7271-D 5V Alternatively without diode, but then D1/D2 must be used!
IC1 PIC16F628-04/P PIC16F628-04P Must be programmed, of course ;-)
Q1 Crystal 4.000 MHz, HC49U/S 4-HC49U-S  
RS232 Connector 10 pins WSL 10G Counterpart: PFL 10
ICSP Connector 10 pins WSL 10G Counterpart: PFL 10
ATX Connector 2 pins PSS 254/2G Counterpart: PSK 254/2W + PSK-KONTAKTE
LED_R Connector 2 pins PSS 254/2G Counterpart: PSK 254/2W + PSK-KONTAKTE
LED_G Connector 2 pins PSS 254/2G Counterpart: PSK 254/2W + PSK-KONTAKTE
FBUT_IN Connector 2 pins PSS 254/2G Counterpart: PSK 254/2W + PSK-KONTAKTE
FP_RST# Connector 2 pins PSS 254/2G Counterpart: PSK 254/2W + PSK-KONTAKTE
IR Connector 3 pins PSS 254/3G Counterpart: PSK 254/3W + PSK-KONTAKTE
IR-Chip SFH5110-36 SFH 5110-36 Use only 36kHz-versions! RC5 uses a 36kHz carrier.
LED 5mm bicolor LED LED 5RG Alternatively separate LEDs
-- Tap splice (Leitungsverteiler) LV-R Use 2 of these for tapping the ATX +5V standby and -5V resp. -12V lines

 

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