X-10
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The design of an X-10 compatible appliance module is described in detail. It may be assembled as-is or customised by a competent home constructor. All functionality is supplied by a PIC16C54 micro-controller at the heart of the module. Schematic, circuit description and printed circuit board design are provided in Acrobat PDF format along with full source code for the PIC16C54. |
| Download full documentation x10am1.zip
(160kbytes) Acrobat Reader is
required
REVISION! - Code revised so
PIC16F84 may be used in place of PIC16C54. EXTRA! - Use the appliance module circuit
board as an X-10 Data-Stream Monitor.
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| Infrequently Asked Questions |
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| Can you supply blank
printed circuit boards? No. I have no blank boards available. |
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| Can you supply the TOKO
tuned transformer? No, I am unable to supply the transformer. The Appliance Module utilises a tuned transformer, model 707VXA042YUK, manufactured by TOKO. The design notes list several suppliers of the TOKO coil however these companies no longer stock the item. The tuned transformer may have been discontinued by TOKO in which case only 'old stock' will be available. The best approach
is to search using
Google
for 707VXA042YUK. |
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| Do you have a
data-sheet for the TOKO tuned transformer? No. The only information I have is from the Digi-Key and BEC web sites. |
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| Frequency: Temperature coefficient: Inductance tuning: Q: Capacitance: (required?) Turns: Pins 3-4 Pins 5-6 Pins 2-5 Pins 1-5
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125kHz 250ppm/degC +/-10% 25 33000pf 49.5 turns 7 turns 3.5 turns 4.5 turns
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| What is the pin-out for the
TOKO transformer? Study the printed circuit board layout. Also, use an ohm-meter to measure the resistance of the windings. The tuned winding has the most turns and the highest resistance. 
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| Some
capacitors are 'X2 rated' what does this mean? Class X capacitors are designed to survive the kind of surges (thousands of volts) expected in an across-the-line application. They are also constructed in such a way as to be "self clearing" or "self healing". The usual design has a very thin metallising on the dielectric film, which vaporizes locally around a puncture and thus eliminates the momentary short-circuit. The package is also made from self-extinguishing materials. "X" and "Y" class of capacitor are specified in IEC standard IEC60384-14. "X" and "Y" capacitors are used at the input power section of power supplies. There are various grades of X and Y - X1, X2, Y1, Y2, etc. "X" class are specified for use from mains line to neutral. "Y" class are specified for use from mains line to protective earth/ground. |
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| Have you designed a
power-line transmitter? No. I have never designed an X-10 power line transmitter. If you wish to design one yourself I would suggest first getting the schematics of the TW523 or PL513 from the X-10 web site. ftp://ftp.x10.com/pub/manuals/technicalnote.pdf Also Microchip have published an interesting Application Note: http://ww1.microchip.com/downloads/en/AppNotes/00236a.pdf Title: X-10 Home Automation Using the PIC16F877A Name: AN236 Date: 10/30/2002 Author: Jon Burroughs |
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| Have you designed any other
X-10 devices? No. The X-10 compatible appliance module was designed in 1996 for a personal requirement - a hobby rather than part of my business. I have not produced other X-10 designs or worked on X-10 since. |
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