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Build Guide Congratulations on your decision to build a Nermal module! Nermal is a fairly easy build with a moderate component count, but please go through this guide at least quickly to make sure you’re not missing anything.
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Component List This list of components is for reference. The part IDs are also indicated on labels on each of the bags, which is why it’s a good idea to keep the parts in the bags or empty the bags onto separate piles. Part Count Type...
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Ω MΩ R23, R24, R26, R28 SPDT switch SW1-SW5 Eurorack 10-pin power header ThonkiConn mono 3.5 mm switching jack J2-J6 kΩ linear potentiometer RV1-RV3 L7805 voltage regulator MCP6004 quad op-amp TL072 dual op-amp NE555P precision timer H11F1M bilateral analog FET optocoupler OK1-OK3 Step-by-step instructions Solder all the resistors first.
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on to most of the diodes, except the LED (D9), which goes on the other side and will be added later. There are 2 types of diodes used: 1N4148 (a single one) and BAT85. Pay attention to the polarity: The black line each...
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Add the 2x5 pin power header in the top left and the capacitors. You can solder the small (0.1 µF) capacitors first, so they won’t fall out after fitting the larger ones and flipping the board for soldering. Or just fit them all at once and bend their legs slightly.
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Now as the last component on this side, solder in the L7805. Make sure it’s correctly oriented: The heat sink (metal) side should match the double line of the white outline on the PCB. The recommended way to do it is not to insert the legs into the PCB holes too far, but just a bit, solder them in and then bend the...
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Now plug in and test your module. Refer to the manual if needed. If something’s not right, it may be best to unplug the module from Eurorack power immediately so as not to damage the PSU. Most problems can easily be fixed by reheating all solder joints so solder reflow.
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