MATRIXSYNTH: Building a MIDIbox SEQ v4+

Wednesday, December 05, 2018

Building a MIDIbox SEQ v4+

Published on Jul 27, 2018 Hawkeye

"Welcome to the first part of the video build tutorial of the new MIDIbox SEQ v4+!
1:35:18 - use 20 MHz crystals for the PIC 16F88s! Value/part in the BOM has been corrected.
1:37:00 - the 100N caps are for C3, C6, C9, C12 (not C1-C4). The BOM was correct. Thanks, Keir!

This is a detailed step-by-step build video tutorial with additional notes, tips and tricks. While the SEQv4+ build is targeted towards intermediate DIYers, it is our firm belief, that everyone being able to hold a soldering iron with a fine soldering tip should have a fair chance of building it, therefore the detailed documentation.

Please refer to the above UPDATES/ERRATA and the below NOTES sections before starting building, in case some some errors did sneak into the video - thanks! :)

0. Overview and Introduction 00:00
1. wCore: Breaking it up (optional for non-SEQ v4+ builds) 05:42
2. wCore: SMT Capacitors 07:15
3. wCore: SMT Resistors 09:52
4. wCore: SMT TVS Diode 12:06
5. wCore: SMT ICs 14:29
6. wCore: THT Diodes 21:10
7. wCore: THT Resistors 23:34
8. wCore: THT Transistors 26:45
9. wCore: THT Potentiometers 32:09
10. wCore: MCU Headers: 34:10
11. wCore: Pin Headers 35:47
12. wCore: IDC Shrouded Headers: 37:15
13. wCore: Installing USB PCB Connectors 40:10
14. wCore: (Re)connecting Core and USB PCB 46:50
15. wCore: Prepare the Waveshare MCU 51:45
16. wCore: Waveshare MCU Jumper Config 55:41
17. wCore: MIOS Studio: uploading MBSEQ App 56:18
18. SD Card: Building the SD Card PCB 57:54
19. SD Card: Building an IDC ribbon connector cable 1:11:03
20. MIDI8: THT Diodes and Resistors 1:13:57
21. MIDI8: Installing IC Sockets 1:18:09
22. MIDI8: Installing Pin Headers & Shrouded IDC Headers 1:20:10
23. MIDI8: Installing PCB to Case Fasteners 1:22:43
24. MIDI8: Installing BLM and MIDI Sockets 1:23:42
25. MIDI8: Installing Optocouplers 1:30:12
26. I2C: Installing THT Resistors 1:31:05
27. I2C: Installing PIC IC Sockets 1:33:35
28. I2C: Installing Crystals 1:35:10
29. I2C: Installing THT Capacitors 1:36:34
30. I2C: Installing THT Capacitors (Part 2) 1:37:55
31. I2C: Installing PCB to Case Fastners 1:39:44
32. I2C: Installing Shrouded 10-pin IDC Header 1:40:39
33. I2C: Installing MIDI Sockets 1:41:21
34. I2C: Installing the PICs (16F88) 1:43:34
35. LineTX/RX: Installing the IC Sockets 1:45:26
36. LineTX/RX: THT Capacitors 1:46:25
37. LineTX/RX: Installing Gold Pinheaders: 1:47:56
38. LineTX/RX: THT Resistors: 1:50:12
39. LineTX/RX: Shrouded 10-pin IDC Headers 1:53:37
40. LineTX/RX: DB25 Sockets 1:54:52
41. LineTX/RX: Mounting ICs 1:57:17
42. Epilogue 2:01:40



1. 1:18:45 and 1:33:46 Regarding low/high quality IC sockets: in the tutorial, we described the used PIC 16F88 IC sockets to be "high quality". But, the consensus is that although the IC pins cut into the socket (maybe making a better connection?) the "pro" advice is that the dual-wipe type are generally better. In short: both types will work out, if you have one type or the other, you will be good within the SEQv4+ application/usecase."

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