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--- mb-sidr8tr:mb-mtrx_bulk [2011/03/22 18:31]
m00dawg
+++ mb-sidr8tr:mb-mtrx_bulk [2011/11/12 17:44] (current)
m00dawg
@@ Line 1: / Line 1: @@
 ====== MB-MTRX Bulk Order ======
+{{:mb-sidr8tr:8x8-led-matrix-rev7-brd.png?320}}
+{{:mb-sidr8tr:8x8-led_matrix-daughter-rev1-board.png?320}}
 ===== Overview =====
-MB-MTRX is a printed board for the 8x8 modulation matrix commonly used with the MB-SID projects. This layout is in large part identical to the MB-6582 matrix layout and is really design to work with it, or any solution using the transistor-sink design found on the MB-6582. Note that the buttons share two of the LED pins because of this.
+MB-MTRX is a printed board for the 8x8 modulation matrix commonly used with the MB-SID projects. The main board itself is just the LEDs and buttons connected to SIL headers, which can connect to DIN/DOUT modules or daughterboards. The daughterboards are for converting the board to the MB-6582 design or when using shift-registers on the other control surface boards is desired.
-The board is designed with SIL headers in mind both for space and because it makes it easier to attach to the MB-6582 baseboard (or, as in my case, a jumper board that then attaches to the MB-6582).
+You can find more information about the boards [[mb-sidr8tr:start|here]].
-You can find more information about the board [[http://midibox.org/forums/topic/15425-feedback-for-an-led-matrix-board/page__pid__136259|here]] and [[mb-sidr8tr:start|here]].
+The bulk order forum post is [[http://midibox.org/forums/topic/16005-mb-mtrx-8x8-led-matrix-bulk-order/|here]]
 ===== Disclaimer =====
-**DISCLAIMER** This board has not been tested. It looks like it should work as advertised but until someone puts on together and gives it a spin, be aware of this. I cannot and will not make any guarantees to success! If in doubt, do not participate or, at least, have a look at the board layout and schematics.
+**DISCLAIMER** These boards have not been tested. It looks like it should work as advertised but until someone puts on together and gives it a spin, be aware of this. I cannot and will not make any guarantees to success! If in doubt, do not participate or, at least, have a look at the board layout and schematics.
-Where are the schematics? The design is still be ratified via the above forum post. Once it has been settled, the layout, schematics, and Eagle files will be available here and on the main MB-SIDR8TR page.
 ===== International Shipping =====
@@ Line 25: / Line 27: @@
 ===== Costs =====
-So far the cost seems to be around $15 for the boards itself assuming 25 boards. This goes down based upon time and number of boards. If people don't mind waiting over a month to get boards, the cost drops to $9.50 for 25. This is an estimate based upon a previous iteration of the board design so the costs may wiggle a bit by the time the bulk order is ready. I suspect the cost may drop ever so slightly if SMD diodes are used.
+For 25 boards, it will be around $15, possibly less depending on any deals going on at the time and how long a turn-around time I can get. For 50 this goes down to about $8.25. This does not include shipping (just the board price).
-===== SMD or Through-Hole Diodes =====
-Some debate has been done on the forum post (see above) as to whether SMD diodes would be better. Since the diodes are on the back-side of the switch, it makes sense to avoid using through-holes so that the diodes don't muck up the mounting of the buttons.
-As a result, my thought is to go with SMD and the costs of the board might go down slightly (though that's a guess). It will also look nicer. Before I decide on that, I am letting people voice their opinion on the matter via the bulk order list. So please put SMD or Through-Hole when adding your name below.
-Keep in mind, SMD is easy! This should be far easier than soldering a GM5, and that itself is easy (just takes patience). So really there is no reason not to use SMD here. But again, if most people want through-hole, that's probably what will be done as long as functionally the board works. Note that you WILL need to solder the diodes on the back side no matter which option you go with. Soldering on top-side could cause the button to mount crooked and that could be bad by the time you put this onto a control surface.
+I may be going with [[http://dorkbotpdx.org/wiki/pcb_order|these]] folks instead as the costs for a smaller run are favorable. For 20 boards, the cost will be about $10 a board. For less than that, the cost would be about $17. This is "back of the napkin" style math as I haven't yet done an official quote or anything. This option is still up in the air but thought I would share it for those on the fence about the bulk order pricing, or the next to hit 25 boards as minimum.
 ===== Bulk Order List =====
-Putting your name here if seriously interested. However, it is not an obligation to buy anything at this point.
+Put your name here only if seriously interested. However, it is not an obligation to buy anything at this point.
-^ Username (Forums) ^ Qty ^ SMD/Through Hole ^ Board Color Preference ^
+^ Username (Forums) ^ Qty ^ Board Color Preference ^
-| m00dawg | 2 | SMD | No Preference |
+| m00dawg | 2 | No Preference |
-| rosch | 3 | all | |
+| rosch | 2 | |
-| Flying Panther | 1 | all | |
+| Flying Panther | 1 | Slight preference for 'standard' Green |
-^ Total ^ 6 ^ ^
+| mastomo | 2 | No Preference |
-| Min Order | 25 | |
+| eptheca | 2 | No Preference |
+| lameth | 2 | No Preference |
+^ Total ^ 11 ^ ^

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