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wcoref4_pcb [2017/09/13 21:21] – [BOM v1.0] latigid_onwcoref4_pcb [2018/12/18 09:36] (current) – [BOM v1.0] latigid_on
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 ===== BOM v1.0 ===== ===== 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^ ^Type     ^Qty ^Value    ^Package ^Parts^Mouser^Reichelt^Conrad^Other^Notes^
 ^Resistors^^^^^^^^^^  ^Resistors^^^^^^^^^^
 |         |1    |330R 5%   |THT         |R102         |      |        |      |     | | |         |1    |330R 5%   |THT         |R102         |      |        |      |     | |
-|         |4    |1k   5%   |1206        |R7B1-4       |      |        |      |     | |+|         |1    |560R 5%   |THT         |R33D        |      |        |      |     | | 
 +|         |3    |1k   5%   |1206        |R33A,B,C      |      |        |      |     | |
 |         |2    |1k   5%   |THT         |R11, R13     |      |        |      |     | | |         |2    |1k   5%   |THT         |R11, R13     |      |        |      |     | |
 |         |2    |2k2 5%   |THT         |R7A, R8A     |      |        |      |     | | |         |2    |2k2 5%   |THT         |R7A, R8A     |      |        |      |     | |
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 |         |9    |2*5   |male                          |      |        |      |     | | |    |         |9    |2*5   |male                          |      |        |      |     | | |   
 |         |3    |2*8   |male                          |      |        |      |     | | | |         |3    |2*8   |male                          |      |        |      |     | | |
-|         |2    |2*25   |female                          |      |        |      |     | | |+|         |2    |2*25   |female                          |      |        |      |     | |solder before male headers |
 ^Hardware^^^^^^^^^^ ^Hardware^^^^^^^^^^
 |         |4    |      |M3 spacer                     |8mm(?)|        |      |     | | |      |         |4    |      |M3 spacer                     |8mm(?)|        |      |     | | |     
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 ===== Versions ===== ===== Versions =====
 +
 +v1.2: general release. Changes:
 +
 +  * The [[wcore_usb|USB]] board is now combined with the wCore. It can be used as is or broken apart and the USB reconnected with wires, a 2.54mm header or a 10-pin Micro-MaTch connector.
 +  * Resistors R7B1-4 were renamed properly to R33A-D. R33**D** should have a different value (560~820R) than R33A/B/C (1k). Using longer cables on J15A/B and a smaller resistance for R33D could lead to displays not initialising properly. 
 +  * There is a circular silkscreen mark that aligns with the same mark on the Waveshare breakout.
 +
  
 v1.0: first release. v1.0: first release.
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 The following build order is suggested: The following build order is suggested:
-  * R7B1-4 (1k) and located near J15_S on the top side +  * R7B1-4 (1k 1206) and located near J15_S on the top side 
-  * R7B and R8B (220R) on the bottom side +  * R7B and R8B (2k2 1206) on the bottom side 
-  * C1A, C1B and C2 on the bottom side +  * C1A, C1B and C2 (100n 1206) on the bottom side 
-  * IC1A, IC1B and IC2 on the bottom side +  * IC1A, IC1B (74HCT125) and IC2 (74HC595) on the bottom side 
-  * Top-side THT components +  * Top-side THT resistors R7A 2k2, R8A 2k2, R11 1k, R12 10k, R13 1k and diode 
-  * Bottom-side THT components+  * Bottom-side THT resistors R101 220k, R102 330R 
 +  * Top-side transistor and trimpots
   * Bottom-side JPA0 header   * Bottom-side JPA0 header
   * Bottom-side 2*25 pin female headers   * Bottom-side 2*25 pin female headers
 +    * for a SEQ v4+ build, consider omitting headers J4B, J5A, J5B, J10A, J10B and J18
   * Top-side male headers, except for J1   * Top-side male headers, except for J1
-  * Solder J1 in conjunction with the USB module+  * Solder J1 in conjunction with the [[wcore_usb|USB module]]
   * Mounting brackets if needed   * Mounting brackets if needed
  
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 {{:wcore:crystal_removed.jpg?nolink&400|}} {{:wcore:crystal_removed.jpg?nolink&400|}}
  
-  * Looking at the top side of the PCB (with all headers etc.) and J1 at the "northern" edge, the Core 407v board plugs in on the bottom side with the JTAG header towards the right+  * The Core 407v board plugs in on the bottom side with the the USB mini connector located below J4A. 
 +  * Explained another way: the JTAG header should be somewhat aligned with the 2-pin CAN header J18: 
 + 
 +{{:wcore:mounted.png?nolink&400|}} 
 + 
 +    * The 407v board should not protrude past the edge of the PCB.
   * Remove the OTG jumpers "FLG," "VBUS" and "PWR OUT." USB won't work properly with these closed.   * Remove the OTG jumpers "FLG," "VBUS" and "PWR OUT." USB won't work properly with these closed.
-  * I believe that the correct state of the BOOT CONFIG switch should be set to "SYSTEM"+  * I believe that the correct state of the BOOT CONFIG switch should be set to "FLASH"
   * There's another switch to select the +5V power. It should be set to "USB" when flashing the board using the USB mini connector as a power source, but for our purposes set it to "PWR 5V".   * There's another switch to select the +5V power. It should be set to "USB" when flashing the board using the USB mini connector as a power source, but for our purposes set it to "PWR 5V".
  
wcoref4_pcb.1505337695.txt.gz · Last modified: 2017/09/13 21:21 by latigid_on