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AXiS MODULAR EBB Build Manual

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EBB Build Guide
Hello fellow DIYer! Thank you for purchasing the EBB DIY Kit!.
This is an ideal intermediate DIY soldering project. It's not too difficult however please read
through the manual carefully. There are certain steps you need to take to make a successful
build.
Also, as there are various IC's(EBB IC, TL074 and TL072) please take precautions for
antistatic discharge such as an antistatic band.
It is recommended that you do have some soldering experience, this is not an ideal build for
a beginner to soldering. Please check out these useful guides here.

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  • Page 1 There are certain steps you need to take to make a successful build. Also, as there are various IC’s(EBB IC, TL074 and TL072) please take precautions for antistatic discharge such as an antistatic band. It is recommended that you do have some soldering experience, this is not an ideal build for...
  • Page 2 R125,R126 14 1N4148 Diode D3,D4,D5,D6,D7,D8,D9,D101,D102,D103,D104 15 4001 Diode D1,D2 16 Button GND Jumper Wire J3 to J4 IC Sockets 8 pin IC socket EBB/FLOW IC and TL072 socket U3, U2 18 14 Pin IC socket U1,U4,U6 Capacitors, regulator and transistor...
  • Page 3 C1,C2,C7,C8,C11,C12,C13,C16,C17,C118,C119,C1 19 100nf Ceramic Capacitor 20,C121 20 10nf Ceramic Capacitor C14,C15 21 100nf Box Capacitor 22 78L05 Power Regulator 23 2N3904 NPN Transistor 24 Box Power header 25 1uf Box Capacitor 26 22uf Electrolytic Capacitor C3,C4 27 100uF Electrolytic Capacitor C5 28 10uF Electrolytic Capacitor C6 Note: Place all control board parts and attach the front panel before soldering.
  • Page 4 Op amps and EBB/FLOW 40 TL074ACN Op Amp U1,U4,U6 41 TL072CP Op Amp 42 EBB or FLOW IC Screw boards together using the other nylon m3 screw. T-18 Davies knob Blue/Green 44 Trimmer topper Blue/Green...
  • Page 5 Resistors Begin your build by populating and soldering all the resistors. Although I’ve printed the values for you it’s still wise to check each one with a multimeter before placing and soldering in its designated location on the PCB. 1 47r Resistor R1,R4 2 10k Resistor R2,R5,R7,R8...
  • Page 6 10 30k Resistor R105 11 12k Resistor R106 R108,R109,R110,R111,R112,R113,R116,R117,R11 12 100k Resistor 8,R119,R120,R121,R122,R128,R129,R130 13 180r Resistor R125,R126 Done? Trim and reflow any(or all) solder joints of the resistors. I find it more successful to do this rather than wait until the whole PCB is populated. Note: Save a resistor leg for the Bridge connection.
  • Page 7 15 1N4148 Diode D3,D4,D5,D6,D7,D8,D9,D101,D102,D103,D104 Jumper Bridge 16 Button GND Jumper Wire J3 to J4 emember that saved resistor leg? Bend it into a curve and solder it in place as shown.
  • Page 8 Place the 5 IC sockets into the PCBs, use either tape or bend a couple of corner legs to allow you to flip the PCB over to solder without them falling out. 8 pin IC socket EBB/FLOW IC and TL072 socket...

  • Page 9: Ceramic Capacitors

    Ceramic Capacitors Locate the 11 100nf capacitors(labelled 104) and place at: C1,C2,C7,C8,C11,C12,C13,C16,C17,C118,C119,C1 19 100nf Ceramic Capacitor 20,C121...
  • Page 10 Next locate the two 10nf capacitors(labelled 103) and place it at: 20 10nf Ceramic Capacitor C14,C15 Solder, trim all the legs and reflow if needed.

  • Page 11: Power Regulator

    1. 100nF Box capacitor. Next up you have one 100nf box capacitor(marked 104J100) Solder, trim, reflow if needed. 21 100nf Box Capacitor Power regulator Find the 78L05 power regulator and place as shown making sure to follow the silkscreen. 22 78L05 Power Regulator...
  • Page 12 Next locate the 2N3904 NPN Transistor and again, make sure to follow the silkscreen. 23 2N3904 NPN Transistor...
  • Page 13 Power Header 24 Box Power header Place the 10 Pin power header onto the board following the silkscreen. The cutout side is indicated and facing outwards from the PCB. Turn the board over and solder one leg ensuring the box header sits flat against the PCB.

  • Page 14: Electrolytic Capacitors

    1uF Box capacitor 24 1uF Box Capacitor Place the 1uF Box capacitor and solder. Again if you have difficulty soldering the pin that goes to ground, turn up your iron and use flux if needed. Electrolytic capacitors Find and place all four electrolytic capacitors. Make sure to orientate them correctly. The negative side is the striped side, positive is the longer leg.
  • Page 15 25 22uf Electrolytic Capacitor C3,C4 26 100uF Electrolytic Capacitor C5 27 10uF Electrolytic Capacitor C6 The 100uF capacitor to C5 and the 10uF to C6 on the board.

  • Page 16: Jack Sockets

    Jack sockets AO_1,AO_2,TRIG, 28 Thonk Mono Jacks WF,D/D,R/O,R/F,WF_INV,WF_POS,MIN,MAX...
  • Page 17 Place all mono jack sockets following the silk screen, put the panel on and secure with a couple of nuts. You can also use a bit of masking tape to secure the panel to the PCB. Turn over and carefully solder a single pin on one jack making sure the jacks are flush with the PCB.

  • Page 18: Take A Break

    Once happy, solder all jack pins to the PCB. Then remove the panel. TAKE A BREAK. Next we will be placing the control board components but not soldering until the panel goes on to hold things in place once more. Turn your iron off to save power and money for a little while.
  • Page 19 Nylon Spacer In the kit you’ll find two nylon M3 screws, one spacer and a washer. It’s important to fit this in part now as it will fix the PCB sandwich in place near the end of the build. M3 nylon spacer, washer Place screw through hole as shown in build guide add and screw 1 washer on other side and screw on the spacer.

  • Page 21: Push Button

    Push Button Locate your momentary button and place, again following the silkscreen orientation. Match the flat side with the image. PUSHBUTTON_MOMENTA RY Button Do not solder yet. Potentiometers In your kit you will find four potentiometers, one metal shafted and three plastic. All are B100k.
  • Page 22 Place the metal alpha one at the top of the PCB following the silkscreen. Then, place the other three. Locate and place the three B100k song huei potentiometers. Do not solder yet.
  • Page 23 Switch Place the switch where indicated on the PCB. MTS SPDT ON-ON SWITCH U7...
  • Page 24 FLOWing. The LED at the top indicates the waveform type so will only display one colour. 36 BI COLOUR LEDs AND_OR_LED, LED1 For EBB we break the rules and place the LEDs the wrong way around as the LED model lights up green for negative current and red for positive.
  • Page 25 So for both LEDs place them with the long leg next to the flat side of the silk screen as shown below. Don’t solder yet! Place the panel over the control PCB and fix a few sockets, the top potentiometer and switch in place.
  • Page 26 Use some tape to hold the button in place and make sure the LEDs are sitting into their holes on the panel, turn over and solder all the control parts you have just fitted. Take care and don’t rush. Once done, remove the panel once more. 16 Pin Headers CB_1, CB_2 16 pin male header...
  • Page 27 HDR-F-2.54_1x16 16 pin female header MB_1,MB_2 In your kit you will find two female and two male 16 pin headers. Male headers are placed on the control PCB as shown. Next push the female headers onto the male pins.
  • Page 28 Then place the Main PCB onto the female headers. Make sure they are the correct way up as shown.
  • Page 29 Next, add in the remaining M3 nylon screw and tighten. This will hold the PCB sandwich in place and allow you to solder all the pins.
  • Page 30 Now go make a cuppa or get a nice cold drink……… Visual checks and multimeter checking. Before inserting the ICs you can visually check for shorts and if you have a multimeter, use that to check for them too. If you have a eurorack power supply handy, plug it in and check that you are getting the correct voltages.
  • Page 31 39 TL074ACN Op Amp U1,U4,U6 40 TL072CP Op Amp 41 EBB or FLOW IC Next grab the remaining IC’s and place in their sockets on the main board PCB, again taking care and placing them the correct way round.

  • Page 33: Panel And Knobs

    Panel and Knobs Before placing the front panel, please do a final inspection and maybe even plug the ‘panelless’ module into your eurorack power to check to see if the LEDs light up. If they do then proceed with fixing the panel one last time and add the knobs to finish your build.
  • Page 34 Well done! You’ve now completed the build! ………….……… Enjoy! ��...
  • Page 35 CONTROLS BOARD:...

  • Page 36: Main Board

    MAIN BOARD:...
  • Page 37 Features: ● Oneshot ‘pingable’ envelope generator using the Electric Druid Oneshot IC. ● 4 simultaneous outputs. ● Unipolar or Bipolar operation. ● 8 waveforms from main output and a further 8 inverted versions. ● Gate/Trigger input. ● And/OR CV/audio mixer section with Max/Min(Crest/Through) outputs. ●...

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