Differences

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--- wavebubble:errata [2007/11/23 12:33]
bushing
+++ wavebubble:errata [2016/01/28 18:05] (current)
@@ Line 1: / Line 1: @@
 Unfortunately, there are many errors or discrepancies between the various resources available for this project.  Eventually, they will all be listed here; if you can then update one of the resources (schematic, PCB layout, assembly directions), please do so and then remove the error from this list.
-Forum threads: (extract info from thread, place on this page and remove thread from list:)
+Note: This errata does not apply to the WB 2010 design by Mictronics found here: http://ladyada.net/wiki/wavebubble/wave_bubble_2010
+===== Part changes:  =====
+==== Battery board ====
+^ Part ^ Incorrect ^ Correct ^ Remarks ^
+| R2 | 2K, 0.25W | 500-1000 ohm | The lower the resistance, the brighter the power LED -- can be any wattage |
+| R3 | ? | do not place | unused |
+| R4 | ? | do not place | unused |
+| R5 | ? | do not place | unused |
+| Q2 | ? | do not place | unused |
+| D1 | ? | SS14 |
+| J2 | optional |  | If you omit this part, you have to jumper two pads together or else you won't get power from the USB port |
-  * http://www.ladyada.net/forums/viewtopic.php?t=4143
+==== Main (radio) board ====
-  * http://www.ladyada.net/forums/viewtopic.php?t=4123
-  * http://www.ladyada.net/forums/viewtopic.php?t=4125
-  * http://www.ladyada.net/forums/viewtopic.php?t=4029
-  * http://www.ladyada.net/forums/viewtopic.php?t=4006
-  * http://www.ladyada.net/forums/viewtopic.php?t=3677
-  * http://www.ladyada.net/forums/viewtopic.php?t=3409
-  * http://www.ladyada.net/forums/viewtopic.php?t=3225
-  * http://www.ladyada.net/forums/viewtopic.php?t=3179
 ^ Part ^ Incorrect ^ Correct ^ Remarks ^
 | C20 | 160pF, do not place | 390-550pF, placement recommended. |
+| C36 | .47uF | do not place | part of (unused) noise circuit; do not place |
 | C40 | 68pF | ? | Sirenza datasheets say 1-2pF, not clear if this is an error or not |
 | C50 | ? | 1 uF 1206 |
@@ Line 20: / Line 23: @@
 | C52 | ? | 1 uF 1206 |
 | C53 | ? | .1 uF 1206 |
+| C62 | 0pF | do not place |
 | C63 | ? | 1pF 0603 |
-| C77 | ? | 4.7uF or 1uF, 0603 | Filter cap; 4.7uF part is difficult to get in 0603, 1uF is ok |
+| C77 | ? | 4.7uF or 1uF, 0603 | Power supply filter cap; 4.7uF part is difficult to get in 0603, 1uF is ok |
 | C80 | 20pF | 22pF | Substitute to save money by combining order with other 22pF caps |
 | C81 | 20pF | 22pF | Substitute to save money by combining order with other 22pF caps |
-| C83 | ? | .1uF ? | not listed in instructions |
+| C83 | .1uF | .1uF ? | on top/parallel R41 |
-| C84 | ? | .1uF ? | not listed in instructions |
+| C84 | .1uF | .1uF ? | on top/parallel R43 |
+| D1 | 1N5817 | SS14 |
+| D2 | 1N5817 | SS14 |
+| D3 | 1N5817 | SS14 |
+| D4 | 1N5235 | do not place | part of (unused) noise circuit; do not place |
+| D5 | 1N5817 | SS14 | optional |
+| D6 | 1N5817 | SS14 | optional |
 | IC2 | LM2733X | LM2731Y | Either part will work, but the 33X is not recommended for supplies less than 16v |
 | L1 | 15 uH | 7.3 uH | Only change if using LM2731Y |
 | L5 | ? | 1K resistor |
 | L6 | ? | 1K resistor |
+| R1 | 510K | ? | Pick a low-voltage point (e.g. 3.7v) -- this voltage divider should |
+| R2 | 220K | ? | should output 1.1v at that point.  Not currently implemented in firmware. |
 | R3 | ? | 39K |
 | R4 | ? | 12K |
@@ Line 37: / Line 49: @@
 | R13 | 100K | 63K | Value may vary to adjust VCO DC Offset gain |
 | R15 | 100K | 33K | Value may vary to adjust VCO DC Offset gain |
+| R19 | 2K | do not place | part of (unused) noise circuit; do not place |
 | R27 | 0 ohms | ferrite bead |
 | R28 | 0 ohms | ferrite bead |
+| R31 | 0 ohms | do not place |
+| R90 | 100K | do not place | part of (unused) noise circuit; do not place |
+===== Misc =====
+The silkscreened part numbers for the tiled Gerbers are incorrect; see http://www.ladyada.net/forums/viewtopic.php?t=4143 for more info.

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