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TubeOhm Instruments
in cooperation with Rolf Degen
present:

Jeannie

polyphoner Synthesizer

the electronic part

DIY Manual V 1.06 / 05.08.22

TubeOhm 2021

Содержание Jeannie

Страница 1: ...TubeOhm Instruments in cooperation with Rolf Degen present Jeannie polyphoner Synthesizer the electronic part DIY Manual V 1 06 05 08 22 TubeOhm 2021 1 ...

Страница 2: ...riendly Changes in V 1 01 C 16 20 now 100 nF with this the encoder works better Also C9 and C15 is now 1 uF instead 4 7 uF Changes in V 1 05 The AD converter board is now soldered directly to the board with the pins The coils L1 2 3 4 and on the FX board L23 can have 3 3 uH or also 4 7 uH Changes in V 1 06 bugfix in the DIY manual To build Jeannie we need some basic parts First of all the PCM 5102...

Страница 3: ...available from various distributors such as Reichelt A heat sink is glued to the Teensy and the USB 5 volt described below is changed The two pin headers are soldered in from below Teensy 800 MHZ clock Switching power supply DC 12 V 1 A Plug 5 5 2 1 center positiv 3 ...

Страница 4: ...omponents may look different or have a different colour The important thing is the value and the pitch TubeOhm 28 08 21 1 first works IMPORTANT First of all we should switch the Teensy 4 1 to external power supply so that it is not forgotten The Teensy is supplied with 5 V from the Jeannie When programming a new firmware via USB the Teensy also gets 5 V from the PC Since there can be voltage diffe...

Страница 5: ...g easier we have lengthened the pads on the board considerably And to be honest with a little practice the components can be soldered without any problems Even by hand If you have ordered a board with soldered SMD ICs from TubeOhm you can skip the next chapter Soldering the SMD components procedure If not please read on In the Jeannie we use SOIC small outline ICs 14 16 8 These are just solderable...

Страница 6: ...the IC as straight as possible on the pads and hold it firmly with your fingers The soldering iron tip should be cleaned of solder residue Use the soldering iron tip to quickly press pin 1 of the IC into the tinned pad 1 of the PCB Repeat the same procedure with pin 8 9 The IC is now soldered to pins 1 and 8 9 on the board Figure 4 When the IC is straight the other legs of the IC are carefully sol...

Страница 7: ...Here is the front side of the board again Figure 5 Figure 6 7 ...

Страница 8: ...And here is the back Figure 7 Figure 8 8 ...

Страница 9: ...oldering We start with IC 5 CD 4052 Attention This IC MUST be a CMOS IC Because this IC gets a supply voltage of 8 volts First we tin pin 8 on the board Figure 9 Then the IC is aligned and soldered to the leg Figure 10 9 ...

Страница 10: ... IC are cleaned with a cotton swab and a cleaner and the solder pads are checked with a magnifying glass Figure 12 The remaining ICs are soldered using the same procedure First solder one pin align it solder the second pin and then solder it completely Attention you should clean the tip of the soldering iron more often 10 ...

Страница 11: ... again with a magnifying glass Figure 13 Once the SMD components are soldered the most difficult part is done Now we turn the board over and solder the complete power supply We start with the TS 1117 3 3 Volt This is the last SMD component TS 1117 33 3 3 Volt Regulator SMT SMD 11 ...

Страница 12: ... cooling fin serves for heat dissipation Figure 14 End of the SMD SMT orgy Building Jeannie with though hole components Please solder the diode 1N4001 right away otherwise it will be quite fiddly later D1 1N4001 or 1N4004 through hole polarized 12 ...

Страница 13: ... Colorcode orange orange gold silver 3 3 uH yellow purple gold silver 4 7 uH through hole Serves for interference pulse suppression Now solder the 9x 100 nF and the 10 pF capacitor 9x100n 1x 10 pF 9x 100 nF marked 104 1x 10 pF marked 10 through hole Interference suppression capacitors 13 ...

Страница 14: ... sockets for ICs IC6 and IC 19 2x8 pin IC sockets sockets for IC6 and IC 19 Attention this part is marked through hole 8V 79L08 and 8V 78L08 Voltage stabilisers 78L08 79L08 2 voltage Regulator IC 10 78L08 8V IC 11 79L08 8V through hole 14 ...

Страница 15: ...tors for the power supply 3x1uF 5x10uF 4x100uf 1x Tantal 10uf C38 36 50 1uF C11 14 45 46 54 10uF C18 19 47uF C8 10 38 51 100uF Ctant 9 10uF tantal through hole attention this parts are polarized minus is the short leg 15 ...

Страница 16: ...d must be bridged K4 is later used for additional functions R78 E5 0 05 12V DC header K4 K5 IC3 R78 E5 0 05 5 Volt K6 DC Plug 1x2 header K5 Power SW 2x3 header K4 through hole Recom switching power regulator 5Volt With this we are done with the back of the board for now The remaining components will be soldered in at the very end otherwise the soldering of some parts may not be easy 16 ...

Страница 17: ... 38 68R blue gray black gold brown through hole metalloxide 1 R36 100R brown black black black brown through hole metalloxide 1 R110 220R red red black black brown through hole metalloxide 1 R111 green blue black brown brown through hole metalloxide 1 D9 1N4148 Diode polarized through hole C49 96 100nF marked 104 through hole 17 ...

Страница 18: ...The resistors and capacitors are used for interference pulse suppression of the encoder R20 21 23 26 and C16 20 R20 21 23 26 10kohm brown black black red brown through hole metalloxide 1 C16 20 10nF 100nF marked 104 through hole changings take 100 nF for C16 20 18 ...

Страница 19: ...42 44 and C48 R41 42 44 150 ohm brown green black black brown through hole metalloxide 1 R25 4 7 Kohm yellow purple black brown brown through hole metalloxide 1 R5 7 8 10 3 3 Kohm orange orange black brown brown through hole metalloxide 1 C48 100nF marked 104 through hole 19 ...

Страница 20: ... 18 24 10 kohm brown black black red brown through hole metalloxide 1 R 9 15 18 kohm brown gray black red brown through hole metalloxide 1 R13 14 39Kohm orange white black red brown through hole metalloxide 1 R6 11 100R brown black black black brown through hole metalloxide 1 20 ...

Страница 21: ...4 22 25 26 27 29 31 32 47 are soldered in C1 3 4 22 25 26 27 29 31 32 47 C1 3 4 25 26 27 47 100nF marked 104 through hole X7R C22 29 33nF marked 333 through hole for the bass circut C31 32 100pF marked 101 through hole 21 ...

Страница 22: ...sistor 2N3904 C9 15 T1 C9 C15 is 1uF or 4m7 uF C9 15 1uF or 4 7uF small for both caps you can take also 1 uF through hole polarized short leg is minus max part high 8 9mm T1 2N3904 Transistor marked 2N3904 through hole 22 ...

Страница 23: ...llow purple black brown brown through hole metalloxide 1 R31 22 kohm red red black red brown through hole metalloxide 1 R32 47 kohm yellow purple black red brown through hole metalloxide 1 R22 33 34 35 220 R R35 150R if SEQ Switch with LED red red black black brown through hole metalloxide 1 R16 1 kOhm brown black black brown brown through hole metalloxide 1 R27 2 2 kohm red red black brown brown ...

Страница 24: ...d push button is used in the kit please use R35 220 ohm LEDs No I have not forgotten them The LEDs are installed at the very end For this we need the 4x 10mm spacers and the housing panel The LEDs are put on the positions Then the panel is screwed on The LEDs are put through the holes in the panel so that they are flush with the surface and then soldered on LED D3 4 5 7 8 10 1N4001 D1 LED D3 4 5 7...

Страница 25: ...gh through hole MIDI connector Audio3 stereo 6 3mm connector through hole stereo jack socket 2x24 pin socket h 8 5mm for the teensy module through hole 3x10 pin socket h 8 5mm for the FX module through hole 2x 12 pin socket h 5mm You need 1x11 and 1x3 pins Cut it one time with 11 pins for the DAC cut from the second header 3 pins for the dac through hole not applicable The DAC is soldered directly...

Страница 26: ...for the LCD through hole LCD header 8 pin cut R1 2 3 4 10k poti through hole 4x data pots Encoder with switch through hole 1x data encoder Volume poti through hole red switch mute panic Mute panic switch attention polarized flat side to left SEQ Switch Can be with or without LED SEQ switch attention polarized flat side to left 4 switches in black unisono boost shift load save attention polarized f...

Страница 27: ...ose the PCB is screwed to the front panel with the 10mm spacers The LEDs are now pushed through the holes in the front panel so that they are flush with the front panel The LEDs are soldered in this position Now the 4 jumpers are set and the voltages checked Jumper K7 switches the second MIDI socket x3 either to MIDI out or through to MIDI Currently Jeannie can only do MIDI through 27 ...

Страница 28: ...d potential all three jumpers should be set Now the voltages are measured To do this the IC LT1054 is plugged into the socket on the back of the board The IC LT1054 is a charge pump and generates the voltage for the negative 8 V regulator Pay attention to the IC direction 28 ...

Страница 29: ... 95 V or 5 05 V for 5 volts for example At 3 3V from 3 25 3 35 8 can also be 7 8 V But the voltages should not differ dramatically If I only have 4 2 volts at 5 volts for example then something is wrong Remember that the measuring instruments have tolerances Now we turn to the DAC converter A PCM5102A is used It is ready mounted on a circuit board Note that the 3 3 volt pin is a voltage output and...

Страница 30: ...Here is the position of the AD converter Here is the position of the AD converter 30 ...

Страница 31: ...This picture shows how the pin header of the DAC is soldered to the board 31 ...

Страница 32: ...play glass otherwise it will not fit into the housing First carefully remove the plastic holder of the pins This has already been done with displays from TubeOhm Then the pins are shortened Now all the pins measured from the bottom are approx 4 4 5 mm long This is enough to insert the display flush into the socket 32 ...

Страница 33: ...the board it is screwed into the board with two M2x12 screws and three nuts each This is how the LCD looks when it is installed Now the IC 6N137 the opto coupler for MIDI and the previously prepared Teensy 4 1 are plugged onto the motherboard from below 33 ...

Страница 34: ...errupted Heat sink glued on So the basic version without Jeannie s effect is ready and can be put into operation The excitement is rising also for me because I have built the prototype board and documented it here at the same time 34 ...

Страница 35: ...n be downloaded from TubeOhm com For flashing the Teensy you need the programme teensy exe is provided on the page TubeOhm com The first thing to do is to install the Teensy Then we do a short test 1 Is the Teensy properly inserted in the socket 2 the DA converter is in the right way in the socket 3 Is K5 the plug for the mains switch short circuited jumper 4 I have a 12 V power supply unit 5 5mm ...

Страница 36: ...be transferred to the Teensy 4 1 The Teensy is connected to the computer Win PC via a USB cable The Teensy exe program is started Now press the button on the Teensy The arrows download and restart light up green and signal that the Teensy is connected to the PC 36 ...

Страница 37: ...At the same time the Jeannie s screen is white Via the menu File open HEX File the hex file Jeannie V1 0x xx hex is loaded with a double click 37 ...

Страница 38: ...ie saves the last sound With a new Teensy nothing is saved yet The sound bank can be set with the first potentiometer from the left The sound number and the name of the set sound appear Now Jeannie without effects is ready to play If MIDI and audio are connected the sounds can be played Please check if all switches are working and if the pots and the encoder are working Do both audio channels emit...

Страница 39: ...ance a synthesiser sound That is why we have developed an effect board with the FV 1 which can simply be plugged into Jeannie and it enchants with reverberation rooms long echoes a chorus and much more As a special effect the clock frequency of the DSP can also be controlled Of course all parameters can be stored And we ll get started right away Here is a look at the DSP board The PCB is quickly a...

Страница 40: ...eohm This contains the effects programmes Procedure First come the SMD ICs then the resistors then the semiconductors and finally the IC socket for the EE Prom and the pin header The SMD components are soldered on first as described in Soldering the SMD components Procedure You can order the board with soldered ICs from TubeOhm 40 ...

Страница 41: ... hole R4 5 6 7 22kohm red red black red brown through hole Than R 22 21 26 18 19 1 2 3 8 R21 R22 2 2 Kohm red red black brown brown through hole R26 1M ohm brown yellow black black brown through hole R18 19 220ohm red red black black brown through hole R1 2 1kohm brown black black brown brown through hole R3 8 100R brown black black black brown through hole 41 ...

Страница 42: ...A 10K resistor for the external clock line MUST be soldered in Important Rext CL Extern Clock brown black black red brown the 10k reduce the amplitude of the external clock through hole important 42 ...

Страница 43: ...external clock is used to prevent reflections on the external clock line The resistors are now all soldered in Now let s install the capacitors 10x100nF C3 13 14 15 22 23 24 27 28 25 100nF marked 104 through hole X7R 43 ...

Страница 44: ...are soldered in 2x1nF C1 2 1nF marked 102 or 1000 through hole C18 20 2 2nF marked 222 through hole C26 330 nF or 470 nF Marked 334 or 474 through hole smooth the PWM for Volume PWM 100kHz C12 19 560pF 680 pF 560pF makes the sound a little brighter through hole 44 ...

Страница 45: ...ansistor and the IC socket C4 5 6 8 9 10 29 30 1uF makted 1uF attention small Elko through hole C17 10uF attention small Elko through hole Transistor 2N 3906 through hole 1x Coil 3 3 uH or 4 7uH Colorcode orange orange gold silver yello purple gold silver through hole 2x8 pin IC socket for the EE Prom through hole 45 ...

Страница 46: ...y the 3 pin headers have to be soldered To do this insert the pin headers into the Jeannie motherboard and press the pin headers flush into the socket headers The effect module is placed on the pin headers 46 ...

Страница 47: ...n see some components are not assembled A quartz crystal is not needed Furthermore there is no 15 pF The same board can later be used as an effect for a Eurorack module in progress So now it should also echo nicely reverben chirpen joke and well I think you hear what I mean 47 ...

Страница 48: ...n work We will add some new features and fix bugs as far as they are not fixed yet Please have a look at our website from time to time The current software version is 1 42A Date 01 04 22 I now refer you to the user manual where you will find some useful tips and tricks Andre TubeOhm Instruments 2021 Special thanks to Rolf the programmer T Synth for giving ideas Julian Schmidt 48 ...

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