Renard8 - Revision history

N1ist: /* BOM */ 78L05 is a positive regulator, 79L05 is a negative one.

2014-10-12T13:10:17Z

BOM: 78L05 is a positive regulator, 79L05 is a negative one.

← Older revision		Revision as of 13:10, 12 October 2014
Line 27:		Line 27:
	==== BOM ====		==== BOM ====

	Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards. In addition, the regulator is now specified as a LP2950, although you may substitute a ~~LM79L05~~ if the input voltage to the board is high enough.		Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards. In addition, the regulator is now specified as a LP2950, although you may substitute a LM78L05 if the input voltage to the board is high enough.

	The part numbers in this BOM take precedence over those in the schematic above.		The part numbers in this BOM take precedence over those in the schematic above.

Ravinglunatic: /* Second Revision */

2011-01-29T05:08:28Z

Second Revision

← Older revision		Revision as of 05:08, 29 January 2011
Line 89:		Line 89:

	TBA		TBA




			[[Category:Renard]]
			[[Category:DIYC Index]]

Phil Short at 20:25, 21 July 2007

2007-07-21T20:25:36Z

← Older revision		Revision as of 20:25, 21 July 2007
Line 7:		Line 7:
	[[Image:Renard8_XA_sch_a.GIF]]		[[Image:Renard8_XA_sch_a.GIF]]

	This schematic is intended to exactly represent the first revision of the PCB. ~~As such, the~~ board has three known issues that will be changed on the next revision of the PCB (if there is one).		This schematic is intended to exactly represent the first revision of the PCB.

			==== Revision XA PCB Errata ====

			The board has three known issues that will be changed on the next revision of the PCB (if there is one).

	1) The order of the outputs on J4, J5 is exactly reversed from that of the Renard16, Renard64 and other Renard boards. Output 1 appears on the connector (J5, pin 8) where Output 8 would be expected (based on the other boards) instead of the expected location (J4, pin 2), and so forth. The power and ground connections are in the proper and expected location on these connectors.		1) The order of the outputs on J4, J5 is exactly reversed from that of the Renard16, Renard64 and other Renard boards. Output 1 appears on the connector (J5, pin 8) where Output 8 would be expected (based on the other boards) instead of the expected location (J4, pin 2), and so forth. The power and ground connections are in the proper and expected location on these connectors.
Line 77:		Line 81:

	There isn't a mouser part number specified for the regulator because they are only available in large quantities. It is available from other sources, and there are other regulators available that should work.		There isn't a mouser part number specified for the regulator because they are only available in large quantities. It is available from other sources, and there are other regulators available that should work.

			BOM Revision History

			7/21/2007 PJS Changed regulator

	=== Second Revision ===		=== Second Revision ===

	TBA		TBA

Phil Short: /* BOM */

2007-07-21T19:48:02Z

BOM

← Older revision		Revision as of 19:48, 21 July 2007
Line 24:		Line 24:

	Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards. In addition, the regulator is now specified as a LP2950, although you may substitute a LM79L05 if the input voltage to the board is high enough.		Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards. In addition, the regulator is now specified as a LP2950, although you may substitute a LM79L05 if the input voltage to the board is high enough.

			The part numbers in this BOM take precedence over those in the schematic above.

	<pre>		<pre>

Phil Short: /* BOM */

2007-07-21T19:46:50Z

BOM

← Older revision		Revision as of 19:46, 21 July 2007
Line 23:		Line 23:
	==== BOM ====		==== BOM ====

	Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards.		Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards. In addition, the regulator is now specified as a LP2950, although you may substitute a LM79L05 if the input voltage to the board is high enough.

	<pre>		<pre>
Line 45:		Line 45:
	1 78-1N5229B 4.3v 0.5w Zener D2		1 78-1N5229B 4.3v 0.5w Zener D2
	1 78-1N5239B 9.1v 0.5w Zener D1		1 78-1N5239B 9.1v 0.5w Zener D1
	1 625-BAT42 30V 100mA Schottky Diode D3		1 625-BAT42 30V 100mA Schottky Diode (preferred) D3
	or ~~(not preferred)~~		or
	1 625-1N5819-E3 50V 1A Schottky Diode D3		1 625-1N5819-E3 50V 1A Schottky Diode (not preferred) D3
	or (not preferred)		or
	1 625-~~1N4001~~-E3 ~~50v 1A~~ Diode D3		1 625-1N4001-E3 50v 1A Diode (not preferred) D3
			or
			1 625-1N4148-E3 50V, 100 mA Diode (not preferred) D3
	1 604-WP7104GT T1 Green LED D4		1 604-WP7104GT T1 Green LED D4

Line 68:		Line 70:
	1 595-SN65LBC179PE4 RS485 Receiver/Transmitter 65LBC179 U1		1 595-SN65LBC179PE4 RS485 Receiver/Transmitter 65LBC179 U1
	1 579-PIC16F688-I/P PIC16F688, unprogrammed, DIP14, Industrial Temp U3		1 579-PIC16F688-I/P PIC16F688, unprogrammed, DIP14, Industrial Temp U3
	1 ~~595~~-~~UA78L05ACLPRE3~~ Regulator, 5V U2		1 --- Regulator, 5V, Low Power LP2950ACZ-5.0 U2
	</pre>		</pre>

	~~If you can obtain it,~~ a ~~LP2950-5~~.~~0 regulator~~ is ~~preferred for U2 in place of the 78L05~~, ~~because it has a lower dropout voltage~~ and ~~lower quiescent current~~.
			There isn't a mouser part number specified for the regulator because they are only available in large quantities. It is available from other sources, and there are other regulators available that should work.

	=== Second Revision ===		=== Second Revision ===

	TBA		TBA

Phil Short: /* BOM */

2007-06-29T16:18:16Z

BOM

← Older revision		Revision as of 16:18, 29 June 2007
Line 22:		Line 22:

	==== BOM ====		==== BOM ====

			Note: this BOM is slightly different from the previously published versions. The preferred part for diode D3 is now a BAT42 diode, because it has lower forward voltage drop and will fit in the holes on the board better. The old parts can continue to be used on previously assembled and working boards.

	<pre>		<pre>
Line 43:		Line 45:
	1 78-1N5229B 4.3v 0.5w Zener D2		1 78-1N5229B 4.3v 0.5w Zener D2
	1 78-1N5239B 9.1v 0.5w Zener D1		1 78-1N5239B 9.1v 0.5w Zener D1
	1 625-BAT42 ~~50V~~ 100mA Schottky Diode D3		1 625-BAT42 30V 100mA Schottky Diode D3
	or (not preferred)		or (not preferred)
	1 625-1N5819-E3 50V 1A Schottky Diode D3		1 625-1N5819-E3 50V 1A Schottky Diode D3

Phil Short: New page: === First PCB Revision === This board can be distinguished by the letters XA on the solder side of the board, and by not having any silkscreen or soldermask. ==== Schematic ==== [[Image...

2007-06-29T16:14:39Z

New page: === First PCB Revision === This board can be distinguished by the letters XA on the solder side of the board, and by not having any silkscreen or soldermask. ==== Schematic ==== [[Image...

New page

=== First PCB Revision ===

This board can be distinguished by the letters XA on the solder side of the board, and by not having any silkscreen or soldermask.

==== Schematic ====

[[Image:Renard8_XA_sch_a.GIF]]

This schematic is intended to exactly represent the first revision of the PCB. As such, the board has three known issues that will be changed on the next revision of the PCB (if there is one).

1) The order of the outputs on J4, J5 is exactly reversed from that of the Renard16, Renard64 and other Renard boards. Output 1 appears on the connector (J5, pin 8) where Output 8 would be expected (based on the other boards) instead of the expected location (J4, pin 2), and so forth. The power and ground connections are in the proper and expected location on these connectors.

2) The RS232/RS485 connections on pins 4,5 of J1 and J2 are transposed with respect to the other boards.

3) The input biasing resistors (R5, R6) are connected wrong, so that they force the serial input on the PIC to go low when the input cable to the board is disconnected. This does not appear to cause any problems at the time.

==== PCB Image ====

[[Image:Renard8-20070228b.gif]]

The blue layer is the solder side, and the red layer represents the component side. The silkscreen layer is shown on this composite image to indicate where the various components are located. None of the boards manufactured to date actually include the silkscreen or soldermask layers.

==== BOM ====

<pre>
PCB
1 TBA Renard8 PCB

Resistors

3 299-27K-RC 27K Resistor, 1/4 W, Axial R5, R6, R8
2 299-1K-RC 1K Resistor, 1/4 W, Axial R3, R4
1 660-MF1/4DCT52R1200F 120 Resistor, 1/4 W, Axial R1
1 299-330-RC 330 Resistor, 1/4 W, Axial R7
1 299-10K-RC 10K Resistor, 1/4 W, Axial R2

Capacitors

1 80-C322C104K5R 0.1 uF Radial-lead Ceramic Capacitor C2
1 140-XRL16V1000-RC 1000 uF, 16V Electrolytic Capacitor C1

Diodes
1 78-1N5229B 4.3v 0.5w Zener D2
1 78-1N5239B 9.1v 0.5w Zener D1
1 625-BAT42 50V 100mA Schottky Diode D3
or (not preferred)
1 625-1N5819-E3 50V 1A Schottky Diode D3
or (not preferred)
1 625-1N4001-E3 50v 1A Diode D3
1 604-WP7104GT T1 Green LED D4

Transistors
1 512-2N3904TA Small Signal Transistor Q1

Connectors

4 571-5202514 AMP Modular Jacks, Right Angle J1, J2, J4, J5
or
4 571-5564161 AMP Modular Jacks, Top Entry
or
4 538-95003-2881 Molex Modular Jacks, Vertical PCB mount
1 575-199314 14 Pin Low Profile IC Socket XU3

ICs

1 595-SN65LBC179PE4 RS485 Receiver/Transmitter 65LBC179 U1
1 579-PIC16F688-I/P PIC16F688, unprogrammed, DIP14, Industrial Temp U3
1 595-UA78L05ACLPRE3 Regulator, 5V U2
</pre>

If you can obtain it, a LP2950-5.0 regulator is preferred for U2 in place of the 78L05, because it has a lower dropout voltage and lower quiescent current.

=== Second Revision ===

TBA