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Summary of Contents for SSSR Labs SM042
- Page 1 SM042, Assembly Manual PCB Version 1.2 20.000 SSSR Labs MCU Chip KOTELNIKOV 1.2 LM393P CD40106BE .1 uF TL074CN KP590KH5 332J100...
- Page 2 PCB Version 1.2 Step 1: PCB Top Side The SM042 DIY Kit contains two boards: Circuit board 1. (Rear) This board consists of the main powering, VCO and TG circuitry. Circuit board 2. (Front) This board contains interface circuitry and the linear scaling circuitry for CV and reference voltage.
- Page 3 SM042, Assembly Manual PCB Version 1.2 Pin 1 Key dot Order of soldering Step 2: SMD Components The AMS1117-5.0 and REF5050 are the only two SMD components in our DIY kit. Place the AMS1117 chip accurately aligned to its footprint, then solder pins according to the order given in the picture above.
- Page 4 SM042, Assembly Manual PCB Version 1.2 Step 3: Small Signal Diodes Find the thinnest components: a silicon small-signal diodes. Notice the polarity. The black stripes indicating the cathodes must correspond with stripes on the PCB. Solder all diodes to the top side of the PCB, then proceed to step 4.
- Page 5 SM042, Assembly Manual PCB Version 1.2 Bend a bit to the right Step 4: Resistors Install the resistors. You can use the above picture as the reference to verify values before soldering. Flip the PCB over, trim the pins and reflow and solder everything to the bottom side.
- Page 6 SM042, Assembly Manual PCB Version 1.2 Notch Pin 1 Reverse direction! Step 5: IC Sockets Insert all DIP IC sockets. Please pay double attention to the correct orientation. The default orientation for chips in the module is the notch turned to the top, or to the left, but there are chips with other directions, marked by blue areas in the picture.
- Page 7 SM042, Assembly Manual PCB Version 1.2 Step 6: Bypass Capacitors Install and solder the 100 nF bypass capacitors, labelled as “104”. There are total of 21 of them. In some early kits, the MuRata ceramic capacitors was replaced with Epcos polyester film capacitors.
- Page 8 SM042, Assembly Manual PCB Version 1.2 Identifying capacitors: 22 or 220: 220 pF .1 J100 20.000 or 10J100 or 104: 100 nF 331: 330 pF (repl. for 300 pF) 15 or 150: 15 pF 1nJ100 or 102: 1 nF 332J100 or 332: 3.3 nF...
- Page 9 SM042, Assembly Manual PCB Version 1.2 ≥3 mm 20.000 .1 uF ≤8 mm 332J100 Step 8: Remaining Top-Side Components Install precision 100K resistors into their places. They must be elevated above the board as shown on the picture. This method of installation is required by the resistors' design and it helps to keep values within tolerance.
- Page 10 SM042, Assembly Manual PCB Version 1.2 20.000 .1 uF 332J100 Step 9: LED Take two potentiometers or toggle switches, and two jack sockets. Install them into places for P1, P2 (SW3, SW4), J1 and J2 but do not solder them. Then insert five LEDs keeping the correct polarity.
- Page 11 SM042, Assembly Manual PCB Version 1.2 3.3 μF 50v Step 10: Bottom Side Components You will find 4 complementary pairs of pin-headers tied together: 2 × 15-pin, 1 × 4-pin and 1 × 6-pin. The female part must be installed on Board 2, and the male part — on Board 1.
- Page 12 SM042, Assembly Manual PCB Version 1.2 20.000 SSSR Labs MCU Chip KOTELNIKOV 1.2 LM393P CD40106BE .1 uF TL074CN KP590KH5 332J100 Step 11: Headers, Tactile Switch, IC Install three 2-pin headers and wear the jumpers on. Then solder all headers. Install the power pin-header. Notice the orientation! It’s recommended to solder two pins in the opposite corners, then solder the remaining pins.
- Page 13 SM042, Assembly Manual PCB Version 1.2 20.000 SSSR Labs MCU Chip KOTELNIKOV 1.2 LM393P CD40106BE .1 uF TL074CN KP590KH5 332J100 Step 12: Potentiometers, Switches, Jack Sockets Install all potentiometers, toggle switches and jack sockets without washers and nuts. Also, if there are fixing tabs on the potentiometers, you need to break them off with pliers.
- Page 14 SM042, Assembly Manual PCB Version 1.2 20.000 SSSR Labs MCU Chip KOTELNIKOV 1.2 LM393P CD40106BE .1 uF TL074CN KP590KH5 332J100 Step 13: Front Panel Put on the panel back to its place. Since you do not longer need access to the top side of the Board 2, you can put on and tighten all washers and nuts.
- Page 15 SM042, Assembly Manual PCB Version 1.2 Step 14: First Power-On The KOTELNIKOV module does not need any adjustment, but you can improve your experience of using attenuverters if you're using round shafted potentiometers with corresponding knobs. Look over the module one more time and check everything you can.
- Page 16 SM042, Assembly Manual PCB Version 1.2 Step 15: Centering the Pitch Potentiometer Prepare a thin permanent marker or a soft pencil. You are going to determine the exact mid-points for all three polarized potentiometers. For your convinience, you could also outline the pointer lines on the Wave, AM, Attack and Decay shafts.
- Page 17 SM042, Assembly Manual PCB Version 1.2 Step 16: Centering the FM and WM Potentiometers Set the module to the settings shown on the left picture. Module will sound like a kind of siren. Find the position of the FM shaft where fre- quency modulation is negligible or disappears completely.
- Page 18 Once you have installed all knobs you are done building the module! Thank you for purchasing an SSSR Labs product and we wish you to have a lot of fun with your new module! Page 18 of 18...
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