MiniP7 V2.03 Assembly and User s Manual 2018 MINIP7 ANALOG DRUM COMPUTER

Transcription

1 MiniP7 V2.03 Assembly and User s Manual 2018 MINIP7 ANALOG DRUM COMPUTER 1

2 MiniP7 Index 1. Thank you Intentionally Blank Kit Content Assembling the Kit (Assembly Manual) Assembly of TH Components and Spacers Population of the LEDs Population of the Trimmers Population of the Slide Pots & Potentiometer Placing the Rocker Switches Population of the Jacks Population of the Push Buttons Population of the Header Mounting of the Spacers Tuning the MiniP White Noise Level Frequencies Mounting the Front Panel Front Panel Knobs Connecting the Power Supply Playing the MiniP7 (User s Manual) Stand Alone Selecting and Deselecting Rhythms and Combinations Using External Clock and Sync Introduction to external clocking Functionality of the external clock and sync Specifications Technical Spec Dimensions Ref Des Positions

3 1. Thank you for choosing this rhythm computer. It s a unique clone for sound and feeling of the famous Minipops7 TM as used throughout several parts of world renown music by Jean Michelle Jarre. The MiniP7 has been designed to mimic the spirit of the Minipops7 TM as good as possible. Please read the assembly and operating instructions carefully to ensure the unit s fullest performance. 2. Intentionally Blank 1

4 3. Kit Content This summary is an overview of all parts in the kit with exclusion of the SMD populated PCB, the Front Panel and the speed knob. To be updated Comment Designator Description Picture Quantity Bolt_M2.5x6_+ Bolt1, Bolt2, Bolt3, Bolt4, Bolt5, Bolt_M2.5x6_+ Bolt6, Bolt7, Bolt8, Bolt9, Bolt10, Bolt11, Bolt12 Led_Red D21 Standard LEDs - Through Hole 3MM FLAT TOP RED 12 Manufacturer Order Code Supplier 1 Supplier Part Number 1 Farnell WP424SRDT Mouser 604-WP424SRDT Led_Green D22 Standard LEDs - Through Hole 3MM FLAT TOP Green 1 WP424GDT Mouser 604-WP424GDT HDR_2x5 HDR1 HDR_2x J1, J7, J Wired Panel Mount Farnell Farnell MH_SPCR_M2.5x8x4.5 MH1, MH2, MH3, MH4, MH5, MH6 MH_SPCR_M2.5x8x Mouser k_Lin_Slide_45 P2, P4, P9, P14, P15 Slide Potentiometers 15MM SHAFT NO DET 45MM STRK SNG AUD 100KB_PTV09_4025FB104P6 5 M2.56 PRA2MCS100- PTA DPA103 Mouser 652- PTA DPA10 Pot_100k_Lin_BOURNS_PTV 09A-4025F-B102 1 PTV09A-4025F-B104 Mouser 652-PTV09A4025FB R P1 Trimmer Resistors - Through Hole 1/4" SQ V/ADJ R P5, P11 Trimmer Resistors - Through Hole 1/4" SQ V/ADJ 500 1k P3, P12, P13, P16, P18 Trimmer Resistors - Through Hole 1/4" SQ V/ADJ 1K 500k P7 Trimmer Resistors - Through Hole 1/4" SQ V/ADJ 500k 10k P8, P10 Trimmer Resistors - Through Hole 1/4" SQ B3W-9000-Y1N Sw1, Sw2, Sw3, Sw4, Sw5, Sw6, Sw7, Sw8, Sw9, Sw10 V/ADJ 10K Illuminated Tactile Switches Illuminated Ylw LED White Cap DPDT Sw11, Sw12 Toggle Switches ON-OFF.45 FLAT.350 BUSHNG SOLDER LUG 6A 1 T73YP201KT20 Mouser 72-T70YP T73YP501KT20 Mouser 72-T70YP T73YP102KT20 Mouser 72-T70YP-1K 1 T73YP504KT20 Mouser 72-T70YB-500K 2 T73YP103KT20 Mouser 72-T70YP-10K 10 B3W-9000-Y1N Farnell M2021ES1W01 Mouser 633-M2021ES1W01 Push_Button Sw13 Tactile Switches OFF-(ON) HI OPR FRCE EXT ACT SCLP GRY CAP 1 JB15HAP-1H Mouser 633-JB15HAP-1H 2

5 4. Assembling the Kit (Assembly Manual) 4.1. Assembly of TH Components and Spacers See Technical Spec for enlarged view Population of the LEDs Mount the LEDs with the pin enlargement just above the PCB. Long Pin is Anode and should be the upper pin. The shortest pin is Cathode and should connect to the SOT23 Transistor. Green Led Red Led Green Led (Upper) D22 Red Led (Lower) D21 Done 3

6 Population of the Trimmers T73YP201KT Ohm marked 201 T73YP501KT Ohm marked 501 T73YP102KT20 1 k Ohm marked 102 T73YP103KT20 10 k Ohm marked 103 T73YP504KT k Ohm marked 504 P1 P5, P11 P3, P12, P13, P16, P18 P8, P10 P7 Done 4

7 Population of the Slide Pots & Potentiometer 652-PTA DPA10 10k 50k Slide Pot 100KB_PTV09_4025FB104 9mm pot meter 100k Lin (can be 50k as well) P2, P4, P9, P14, P15 P6 Done 5

8 Placing the Rocker Switches Sw 12 is only used as a SPDT, while Sw 11 is used as a DPDT M2021ES1W01 DPDT switch NKK Sw 11, Sw 12 Done Population of the Jacks Although this can be done at this time, it may be better to assemble the jacks after the PCB has been put on the front panel. In the latter case be careful not to scratch the front panel. The jacks will be at their correct height and the pins can be bent to solder direct to the PCB at the right vertical position. 6

9 Jack 3.5mm J1, J7, J8 Done Population of the Push Buttons B3W-9000-Y1N JB15HAP-1H Sw1, Sw2, Sw3, Sw4, Sw5, Sw6, Sw7, Sw8, Sw9, Sw10 Sw13 Done 7

10 Population of the Header The boxed header has to be mounted on the bottom side of PCB. Pin 1 should be at the lower edge of the board Boxed Header 2x5 HDR 1 Done Mounting of the Spacers Mount 6 spacers at their positions using an M2.5 x 6 mm bolt. No springs are foreseen. One can always add a spring or put some lacquer to avoid unintentional loosening of the bolt. MH_SPCR_M2.5x8x4.5 Spacer Bolt_M2.5x6_+ Bolt MH1,MH2, MH3, MH4, MH5, MH6 Done 8

11 4.2. Tuning the MiniP7 A hidden software feature allows the instruments to be triggered by the rhythm select buttons. As there are 15 instruments and only 10 rhythm select buttons, the instruments have been split into two groups. One 8 instruments group in the upper rhythm bank and a 7 instruments group in the lower rhythm bank. To enter this feature, press the rhythm buttons 1 and 2 together for about 3 seconds. The bank select LEDs will dim. Instruments can now be triggered by pressing a rhythm select button. To exit this feature, press the 10 th rhythm select button. The following table shows the instrument vs. button. (put the balance to 50%) Green channel button1 BassDrum button2 SnareDrum_1 button3 SnareDrum_2 button4 CowBell button5 Bongo_Small button6 Bongo_Large button7 Conga button8 RimShot Red Channel button1 HiHat button2 Tambourine (open the slider to hear it) button3 Cymbals_1 button4 Cymbals_2 button5 Claves button6 Quijada (open the slider to hear it) button7 Guiro (open the slider to hear it) To hear the Cowbel s high and low sound separately, probe the following points on the PCB. The easiest way to calibrate is by ear and compare your tuning to the samples on our website. The samples are in the same order as the sound under the buttons. 9

12 White Noise Level Turn P8 to have 100 mvpp at measurement point WN on an oscilloscope. Amplitude [mvpp] Relative trimmer position White Noise Level Frequencies Not all instruments of the MiniP7 need to be tuned at time of assembly. The following table provides the approximate frequencies of the tunable instruments to be tuned to. Using a frequency meter or audio analyzer on PC may be a quite big job to get the tuning done. Another and swift approach is comparing with a software tone generator or some internet samples. The latter may deviate a lot from the table depending on the internet sample. Instrument Frequency [Hz] Relative trimmer position Cow Bell Low P5 800 Cow Bell High P Claves P Rim Shot P Bongo Small P3 632 Bongo Large P Conga P Guiro Repetition frequency P7 80 Bass Drum P

13 4.3. Mounting the Front Panel Front Panel Place the Front Panel on top of the tuned PCB and fix with 6 philips-head screws M2.5x Knobs After assembly of the Front Panel, it s time to place the knobs Connecting the Power Supply. The MiniP7 has a selectable power supply to operate either under 12V or 15V conditions. Place both jumpers on the right side for 15V operation and on the left side for 12V operation. The Power Supply Connector has its negative pointing to the bottom edge of the PCB. 11

14 5. Playing the MiniP7 (User s Manual) 5.1. Stand Alone Selecting and Deselecting Rhythms and Combinations The MiniP7 does not have a program memory, so it can not recall its last used rhythm. Therefor the MiniP7 starts up without any rhythm selected. Tambourine, Guiro and Quijada are always active and can be played without any of the rhythms active. The standard sequence and measure for these instruments without a rhythm selected is 4/4 in 1/16th steps. The MiniP7 contains two rhythm banks with each 10 selectable rhythms. To select a rhythm, select the bank the rhythm is in, then press the respective button beneath the rhythm. Whenever any button is pressed, all previous selected rhythms or rhythm combination will be cleared. Any of the rhythms can be combined with all other rhythms within the same bank. Selecting Mambo combined with Rhumba is possible, selecting Mambo combined with Beguine is not possible To combine multiple rhythms, hold down one rhythm and press all the others you want to combine. Pressing any of the rhythm select buttons afterwards will clear all selected rhythms and select the rhythm according to the bank selected and the button being pressed. Deselecting all selected rhythms can be done by holding down any rhythm select switch for about 3 seconds. This will turn all selections and respective LED s off. 12

15 5.2. Using External Clock and Sync Introduction to external clocking. The MiniP7 has been foreseen with two extra inputs to provide the capability to use external applied clocking and resetting/syncing. The MiniP7 internal system mimics the original s internal clocking system which switches between 12 and 16 counts per measure depending on the selected rhythm. To keep the duration of a measure constant, the original Minipops7 TM internally alters the clock speed in such a way that the 12 counts take about the same time as the 16 counts. The same effect has been created in the MiniP7 by creating a system based on overclocking. As the original has some nice and hear-able artifacts due to the asynchronous construction of the counter, its modulus selection and reset mechanism, the overclocking in the MiniP7 has the advantage that many of these artifacts allowed to be reconstructed. What does this mean with respect to the internal 1/16th clock. For all 4/4 and 3/4 rhythms the overclocking uses 6 clock generator pulses per 1/16th note. For all 6/8 or 12/8 rhythms the internal overclocking uses 8 generator pulses per 1/16th note. When using external clocks, this overclocking will be reconstructed with all pulses equally spread over time to maintain the original s artifacts. As to be able to stop the external clock, for undefined time in between pulses, the MiniP7 generates these internal overclocking pulses at a rate sufficiently high to cope with 240 BPM for the first beat after a clock stop, and equally spread between all following beats. One another on the expense of correctly mimicking all artifacts, but when one stops the clock externally, one overrules the intentions and spirit of the original. This will mainly be heard in the Guiro rhythm Functionality of the external clock and sync. 1 3 Press buttons 1 and 3 for three seconds to enter the external clocking mode Both Bank select LEDs will dim. When applying a clock signal to the clock input, the selected Rhythm will start playing. Stopping the clock will keep the rhythm in its last position. If the clock is stooped somewhere in the middle of a bar, the Guiro may remain sounding as on that beat its gate may be open for this beat. Applying a Sync / Reset will put the beat counter back to the first beat, and also stop the eventual Guiro sound. When in external clocking mode, the start/stop button will work as a sync/reset. The selected Bank Select LED will indicate beat 1. The other Led will blink with the incoming Clock. Pressing buttons 1 and 3 another three seconds will return the unit to normal function. 13

16 6. Specifications 6.1. Technical Spec. PCB dimensions 242 x 110 x 1.6 Power Supply Front Panel + 12V or 300mA - 12V or ma 3U by 48 HP Analog Output Standard line level 0.7 Vrms External Sync Vin min = 3V3. Vin max = 15V. ESD protected by 100pF cap to GND. External Clock Vin min = 3V3. Vin max = 15V. ESD protected by 100pF cap to GND. Slide Pot travel 45 mm Rhythm Presets 20 Percussion Instruments 15 14

17 6.2. Dimensions 15

18 6.3. Ref Des Positions 16