Renard64

Revision XA board (first revision)

Schematic

Media:Renard64_sch_001.pdf

Layout

XA PCB

Picdimmer forum thread

XB PCB

COOP PCB V2.0

BOM

There are several alternatives listed below for providing a zero-crossing signal. The first choice is listed as preferred, because that is the selection that works with the Ren-T board. The second alternative is OK (requires an external low-voltage transformer). The third alternative will work also, but its use is discouraged because it requires that 110VAC be brought onto the controller board.

PCB
1  TBA                   Renard 64-Port PCB

Resistors

3  299-27K-RC            27K Resistor, 1/8 W, Axial (RS485 pull)     R5,R8,R14
2  299-1K-RC             1K Resistor, 1/8 W, Axial (RS485 series)    R4,R7
1  660-MF1/4DCT52R1200F  120 Resistor, 1/4 W, Axial                  R6
1  299-330-RC            330 Resistor, 1/8 W, Axial (for power LED)  R19
 
Capacitors

8  80-C322C104K5R        0.1 uF Radial-lead Ceramic Capacitor        C3-C10
1  647-UVR1C470MDD       47 uF, 16V Radial-Lead Elect. Cap           C2

Diodes
1  78-1N5229B            4.3v 0.5w Zener                             D4 (left)
1  78-1N5239B            9.1v 0.5w Zener                             D4 (right)
1  604-WP7104GT          T1 Green LED                                D5

Connectors

2  571-5202514           AMP Modular Jacks, Right Angle              J3, J4
16 538-95003-2881        Molex Modular Jacks, Vertical PCB mount     J5-16, J18-21
1  571-6404542           AMP Polarized Header (2-Pin, Straight Post) J17
8  575-199314            14 Pin Low Profile IC Socket                U7-U14
1  571-1032393           3-Pin Straight Header                       J2
1  151-8000              2-Pin Shunt                                 J2
1  571-6404543           3-Pin Polarized Header (see note below)     U1

ICs

2  511-ST485BN           RS485 Connectors                            U4,U5
8  579-PIC16F688-I/P     PIC16F688, unprogrammed, DIP14, Industrial Temp    U7-14

Oscillator
1 520-TCH1843-X          Oscillator, 18.432 MHz, 5V, 8-DIP           U3

ZC Alternative 1 (if zero-crossing is brought in on J17 or through J3/J4, preferred)
1  299-10K-RC            10K Resistor, 1/8 W, Axial                  R9
1  512-2N3904TFR         2N3904 Transistor                           Q1

ZC Alternative 2 (if 12VAC is brought into J1 as the zero-crossing source)
1  571-6404542           AMP Polarized Header (2-Pin, Straight Post) J1
1  782-H11AA1            Optoisolator                                U6
2  299-1.5K-RC           1.5K Resistor, 1/8 W    Resistor            R1,R2

ZC Alternative 3 (if 110VAC is brought into J1 as the zero-crossing source, discouraged).
1  571-6404542           AMP Polarized Header (2-Pin, Straight Post) J1
1  782-H11AA1            Optoisolator                                U6
2  71-CCF60-15K-E3       15K Resistor, 3/4 W, MF Resistor            R1,R2

Optional (if per/port LEDs are desired)
64 859-LTL403G           LEDs, Rectangular, Green       
8  652-4608X-1LF-680     Resistor Network, 680 Ohm, 8-Pin, Bussed    R10-13, R20-23
8  299-680-RC            Resistor, 680 Ohm, 1/8W                     R15-18, R24-27

Optional (if unfiltered power is brought in through J4, see note below about on-board regulator)
1  625-1N5819-E3         50v 1A Schottky Diode                       D1
1  511-L4940V            Regulator, LDO, 5V, 1.5A                    U1
1  140-XRL16V1000-RC     1000 uF, 16V Radial-Lead Elect. Cap         C1

The on-board regulator should only be used if measures are taken to keep the current consumption down (omitting the on-board LEDs, and using the non-PWM firmware). If the LEDs are used and the PWM firmware is installed, the current consumption if the board is about 1A, and so the regulator will dissipate too much power (the small value of C1 precludes decreasing the input voltage).

If the on-board regulator is used, omit the header that is designated for U1.

Revision History

 7/21/2007 BOM copied from picdimmer forum, on-board regulator made optional
 7/21/2007 Value of regulator parts (diode, regulator, cap) changed.
 7/21/2007 Value of LED current limit resistors changed.
 7/22/2007 Changed p/n of TYCO/Amp vert. mount connector to ROHS, added note about physical size problem with them.
 7/24/2007 Deleted TYCO/Amp vert. mount jacks, they don't fit.  Use the Molex Jacks instead.
 7/24/2007 Changed value of C2, to agree with datasheet for regulator even at low temperatures.
 8/07/2007 Change vendor, pn for optional 680 Ohm resistor network to one that is more readily available.
 8/07/2007 Change description of 299-series resistors (previously had the wrong power rating).
 8/07/2007 Created two zero-crossing alternatives.
 8/12/2007 Added new zero-crossing alternative (the new alternative 2)
 8/27/2007 Added Two 3-Pin headers (for J2, U1) and a 2-pin shunt (J2).

Errata for Rev XA PCB -

 1) The trace between J4 and D1 is too small, and needs to be beefed up if the board is configured to draw more than 1/2A through J4.
 2) There are two diodes labeled D4.
 3) The holes for D1 are too small.
 4) The silkscreen reference designator for C3 (above U10) is missing.