Step 4: Assembly #2
Next, add the transistors. They should be oriented at show in the schematic/picture. The transistor on the left is placed in the direction opposite the transistor on the right (notice both have round parts facing the middle). This is the standard (typical?) BC547B pin-out. If you have problems with your finished circuit, make sure that your transistors have the same pin-out as shown in the schematic and reorient as needed.