Update readme.md

readme.md

@@ -14,6 +14,34 @@ The device runs on a single 9V battery and outputs it's signal on a 6.3mm audio
 For Wiring look no further than here:  
 ![](images/wiring_diagram.png)
 
+## How to Build
+
+1. Solder in the IC-sockets first:
+    - make sure the small notch in the socket aligns with the notch on the silkscreen graphics
+    - solder two diagonal corner pins first
+    - once everything is flush solder the rest of the pins
+2. Solder the ceramic capacitors (next to the IC-sockets)
+3. Solder the red film capacitors
+4. Solder the 100k resistors
+    - bend one leg around, so it fits the vertical footprint
+5. Solder the IDC pins for the jumpers
+6. Solder the TRS jack
+7. Prepare 17 short cables, for each:
+    - cut the cable to length (depends on the case used)
+    - strip the isolation off the wire at both ends, drill the exposed copper strands
+    - tin both sides of the cables
+8. Solder the cables to the controls:
+    - 3 for volume potentiometer
+    - 2 for timbre potentiometer
+    - 2 for drone switch
+    - 2 for fire button (do not solder this one yet!)
+    - 6 for frequency potentiometer
+    - 2 for power switch (if needed)
+9. Solder the connectors to the PCB in the appropriate places (see graphic above)
+10. Drill holes in the case (for potentiometers, switches etc) and put all the controls in
+11. Solder the fire button
+12. Test
+
 ## Errata (revision 0.9)
 
 There is a mistake with the output power switching in revision `0.9` – gladly this is easily fixed, by drilling away a pad and bridging a connection: