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16x4blm_pcb [2013/02/15 09:16]
ilmenator [Frontpanel] added comment about switch cap sizes
16x4blm_pcb [2022/06/17 09:56] (current)
ilmenator [Where to buy?]
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 ===== Overview ===== ===== Overview =====
-The board holds all necessary components including surface mount shift registers (DOUT and DIN) on the backside and connects via a single 10pin cable to J2 on Wilba'​s control surface board. Additional modules (BPM and TPC displays) can be connected to a second 10pin connector that loops through all serial I/O signals from J8/J9 of the Core32/​LPC17 board. The board features duo LEDs and the very nice {{:​home:​users:​ilmenator:​64250101_00_k.pdf|Marquardt 6425}} series of buttons with the {{:​home:​users:​ilmenator:​826000011_00_k.pdf|16mm square caps}}.+The board holds all necessary components including surface mount shift registers (DOUT and DIN) on the backside and connects via a single 10pin cable to J2 on Wilba'​s control surface board. Additional modules (BPM and TPD displays) can be connected to a second 10pin connector that loops through all serial I/O signals from J8/J9 of the Core32/​LPC17 board. The board features duo LEDs and the very nice {{:​home:​users:​ilmenator:​64250101_00_k.pdf|Marquardt 6425}} series of buttons with the {{:​home:​users:​ilmenator:​826000011_00_k.pdf|16mm square caps}}.
  
-The buttons do not align with Wilba'​s MB-SEQ frontpanel design. The reason for this is simple: In my front panel there is a TPC (Track Position ​Counterdisplay, a step display, and a [[http://​ucapps.de/​midibox_seq/​mbseq_v4_bpm_digits.pdf|BPM display]] to the left of the button / Duo-LED matrix. A second reason is that the protoboard manufacturer ([[http://​www.goldphoenixpcb.com/​|Gold Phoenix PCB]]) ​I used has a size limit that I had to respect.+The buttons do not align with Wilba'​s MB-SEQ frontpanel design. The reason for this is simple: In my front panel there is a [[TPD_PCB|TPD]] ​(Track Position ​Display), a step display, and a [[http://​ucapps.de/​midibox_seq/​mbseq_v4_bpm_digits.pdf|BPM display]] to the left of the button / Duo-LED matrix. A second reason is that the protoboard manufacturer ​I used ([[http://​www.goldphoenixpcb.com/​|Gold Phoenix PCB]]) has a size limit that I had to respect.
  
 ===== Schematic ===== ===== Schematic =====
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 The total size of the PCB is 335.15mm x 97.92mm. ​ The total size of the PCB is 335.15mm x 97.92mm. ​
 +
 +===== PCB Layout v2.0 =====
 +Meanwhile, I have created a version 2 of the board, which basically has all the features of the original one, plus it can hold three different types of switches:
 +
 +- the Marquardt 6425 series (my favourite switches)
 +
 +- ITT Schadow D6 series (TK's favourite switches)
 +
 +- E-Switch 612-TL1100 series (the ones that Wilba used on the SEQ v4 board).
 +
 +{{:​home:​users:​ilmenator:​blm16x4:​blm_16x4_v2.jpg?​600|}}
 +
 +{{:​home:​users:​ilmenator:​blm16x4:​blm_16x4_switches.jpg?​600|}}
 +
 +==== Where to buy? ====
 +If you are interested in building this, send a personal message (PM) to user //​ilmenator//​ over at the [[http://​midibox.org/​forums/​|MIDIbox forum]] (you have to register to be able to send PM). As of June 2022, I have PCBs available for 25€ each. I can also provide you with complete kits with Marquardt or D6 switches in black.
 ===== BOM ===== ===== BOM =====
  
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 ^  ^
-^ Reference ^ Description ^ Package ^ Value ^ Quantity ^ Mouser ^ Reichelt ^ +^ Reference ^ Description ^ Package ^ Value ^ Quantity ^ [[http://​www.mouser.com/​|Mouser]] [[http://​www.reichelt.de/​|Reichelt]] ^ [[http://​http://​www.soselectronic.de/​|soselectronic]] ​
-| C1, C8 | capacitor | 2.54mm pitch | 100n | 2              | | KERKO 100N |  +| C1, C8 | capacitor | 2.54mm pitch | 100n | 2              | | KERKO 100N |  
-| C2-C7 | capacitor | SMD 1206 | 100n | 6 | | X7R-G1206 100N |   +| C2-C7 | capacitor | SMD 1206 | 100n | 6 | | X7R-G1206 100N |  ​| 
-| D1-D8, D17-D24, D33-D40, D49-D56, D65-D72, D81-D88, D97-D104, D113-D120 | 3-legged duo LED | 3mm |common cathode | 64 | 859-LTL1BEKVJNN | | +| D1-D8, D17-D24, D33-D40, D49-D56, D65-D72, D81-D88, D97-D104, D113-D120 | 3-legged duo LED | 3mm |common cathode | 64 | 859-LTL1BEKVJNN | | 
-| D9-D16, D25-D32, D41-D48, D57-D64, D73-D80, D98-D96, D105-D112, D121-D128 | 1N4148 | DO-35 | | 64 | | 1N 4148 | +| D9-D16, D25-D32, D41-D48, D57-D64, D73-D80, D98-D96, D105-D112, D121-D128 | 1N4148 | DO-35 | | 64 | | 1N 4148 
-| RR1, RR2 | 1 + 8 Resistor network | SIL9 | 10k | 2 | | SIL 9-8 10K | +| RR1, RR2 | 1 + 8 Resistor network | SIL9 | 10k | 2 | | SIL 9-8 10K 
-| R1-R32 | 1/4W resistor | | 220 | 32 | | 1/4W 220 | +| R1-R32 | 1/4W resistor | | 220 | 32 | | 1/4W 220 
-| R33, R34 | 1/4W resistor | | 10k | 2 | | 1/4W 10K | +| R33, R34 | 1/4W resistor | | 10k | 2 | | 1/4W 10K 
-| SW1-SW64 | push switch | Marquardt 6425* | | 64 | 979-6425.0101 | | +| SW1-SW64 | push switch | Marquardt 6425.0101* | | 64 | 979-6425.0101 | TASTE 6425.0101 | [[http://​www.soselectronic.de/?​str=371&​artnum=1325&​name=marquardt-6425-0101|1325]] | 
-| U1-U6 | 74HC595 | SO16 | | 6 | | SMD HC 595 | +| | key cap | Marquardt 826.000.011 | 16x16mm | 64 | |TASTE S 826 (red!) | [[http://​www.soselectronic.de/?​str=371&​artnum=1484&​name=marquardt-826-000-011|1489]] ​
-| U7, U8 | 74HC165 | SO16 | | 2 | 863-MC74HC165ADR2G | |  +| U1-U6 | 74HC595 | SO16 | | 6 | 863-MC74HC595ADG ​| SMD HC 595 
-| J1, J2 | connector 2x5 | | | 2 | | WSL 10G |+| U7, U8 | 74HC165 | SO16 | | 2 | 863-MC74HC165ADR2G ​| |  
 +| J1, J2 | connector 2x5 | | | 2 | | WSL 10G |
  
 * Button caps usually have to be ordered separately - these should be the 16x16mm types, not the 19x19mm! * Button caps usually have to be ordered separately - these should be the 16x16mm types, not the 19x19mm!
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 ===== Frontpanel ===== ===== Frontpanel =====
  
-I have had my frontpanel laser cut by [[https://​www.ponoko.com/​|Ponoko]]. Here is the template:+I have had my frontpanel laser cut at [[http://​www.formulor.de/​|Formulor]],​ the German branch of [[https://​www.ponoko.com/​|Ponoko]]. Here is the template:
  
 {{:​home:​users:​ilmenator:​blm_16x4_frontpanel.png?​600|}} {{:​home:​users:​ilmenator:​blm_16x4_frontpanel.png?​600|}}
16x4blm_pcb.1360919812.txt.gz · Last modified: 2013/02/15 09:16 by ilmenator