Differences

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--- seqv4plus_enc-plate [2017/09/12 06:19] – created latigid_on
+++ seqv4plus_enc-plate [2018/12/18 09:35] (current) – [BOM v1.0] latigid_on
@@ Line 9: / Line 9: @@
 The encoders are directly connected through the headers to DIN pins in the stacked PCB. The switches are connected to the matrix through diodes.
+{{:seqv4plus:encplatehead.png?nolink&800|}}
 ^Part ^DIN SR ^DIN pins/column ^Cathode row^
@@ Line 29: / Line 31: @@
 |SW8  |2      |D7        |C1           |
-===== BOM v1.0 placeholder =====
+===== BOM v1.0 =====
+**Please find the current BOM on [[http://midiphy.com]]. The table below is depreciated and will not be updated.**
 ^Type     ^Qty	^Value	   ^Package	^Parts^Mouser^Reichelt^Conrad^Other^Notes^
-^Resistors^^^^^^^^^^
-|         |6    |100-220R 5%   |THT |R1-6  |      |        |      |     | |
-^Resistor network^^^^^^^^^^
-|         |1    |10k   |SOM16 |RN1  |4816P-T02-103LF      |        |      |     | |
-^Capacitors^^^^^^^^^^
-|         |3    |100n   |1206 |C1-3 |     |        |      |     | |
 ^Diodes^^^^^^^^^^
-|         |19    |1N4148 |THT         |            |      |        |      |     | |
+|         |8 |1N4148 |THT         |            |      |        |      |     | |
-^LEDs^^^^^^^^^^
+^Encoders^^^^^^^^^^
-|         |18    |various |3mm  |            |      |        |      |     |insert into switches |
+|         |8    |STEC12|         | | |STEC12E08      |      | | |
-^ICs^^^^^^^^^^
-|         |1    |74HC165|SOIC16         |IC2            |595-SN74HC165DR       |        |      |     | |
-|         |2    |74HC595|SOIC16         |IC1, IC3            |      |        |      |     | |
-^Encoder^^^^^^^^^^
-|         |1    |STEC12|         | | |STEC12E08      |      | | |
-^Switches^^^^^^^^^^
-|         |18    |MEC/APEM |3FTH9         |SW1-18 |642-3FTH9 |TASTER 3FTH9 |705276 - 62 | | |
 ^Headers^^^^^^^^^^
-|         |1    |1*3                   | male  |      |        |      |     | | |
+|         |3    |1*10                  |through-board | |MDF7-10S-2.54DSA(55)        |      |     | | |
-|         |2    |2*5                   | male  |      |        |      |     | | |
 ^Hardware^^^^^^^^^^
-|         |6    |M3 spacer |TBD       |             |        |      |     | | |
+|         |2    |M2 washer |3mm?       |             |        |      |     | | |
-|         |1    |datawheel |DK-38?    |             |        |      |     | | |
+|         |9    |M3 washer |3mm?       |             |        |      |     | | |
-|         |18    |switchcaps |22.5mm       | |642-1S11-22.5        |      |1S11-22.5     | | |
+|         |8    |knobs |TBD      | |        |      |     | | |
+**Note: __two__ sets are required per SEQv4+! **
 ===== Versions =====
@@ Line 63: / Line 54: @@
 ===== Assembly =====
-Start with the SMT parts (caps, ICs and RN), then the resistors and diodes with correct polarity. Headers, switches (read below first!), encoder, caps and knobs.
+Start with the eight encoders and diodes. Important to note:
+  * There is less than 3mm vertical distance between the stacked PCB sets. If diode or encoder legs are too long, they may short out the components below. I need to check the assembly. It might be that all parts on the ENC-PLATE PCB are soldered from the top and the legs protruding through are trimmed flush on the underside.
-**Important**: insert the LEDs into the switches before soldering them! It's quite hard to bend the legs once the switches are in place. The LED legs should not interfere with the switch action; i.e. the button should be pressed and released without getting caught on the legs.
+Once the diodes and encoders are okay, line up the headers, using a [[seqv4plus_le_mec|le MEC]] board and optionally some of the mounting points. Once you are happy, solder the three 1*10 male pin headers on the lower PCB, and only then fix the through-board female headers on the upper PCB.
-Ensure that when the switch is soldered in, the LED is correctly polarised. Round part (anode) of the LED to the circled pin; flat part (cathode) to the line:
+  * At this point, check again that there are no soldered joints bridging the two PCBs.
-{{:seqv4plus:mec.png?nolink&400|}}
+We need to first decide how the case will come together, but it is wise to now align the mounting washers. Lastly the Matias switches are mounted in the Plate PCB, and are soldered below.
+  * Keep in mind that once the switches are in, the only way to separate the two PCBs is to remove the switches!
+So it could be that the DIN functions of buttons and encoders are tested prior to installing the switches.