This page isn’t so much assembly instructions as it is a “this is what your board should look like when you’re done” page. These are all through-hole parts and the pictures below show their correct positions.
Parts to be particularly picky in placement:
Diodes. Note the cathode stripe, which must face the correct direction. The stripe is noted on the PCB in silkscreen. The diode by itself under the SCSI connector points toward the edge of the PCB, and the other two point at the voltage regulator (LD1117V).
Resistors. I was careful to choose two different sizes for the resistors to make it harder to confuse them. These program the voltage regulator to output the proper voltage, and must not be reversed. Small resistor in the smaller position, large resistor in the other location – as shown below.
SCSI Connector. This one is in a strange location – on the bottom of the PCB! This was one of only two possible mounting methods that worked to put the SCSI connector precisely where it should be – on the very bottom plane of the device. Make sure the pins point outward or you’ll have a lot of “fun” desoldering and rotating this tiny connector around.
Resistor Packs / Networks (forbidden hotdog buns?): For these, the text must face the SCSI connector. The second image below shows their proper positioning. Feel free to either use the black 20 pin IC socket so they are removable, or hard solder them in place if you want. Note that if you intend to use this in a non-PowerBook device, you really should use the IC socket as shown in the pictures below. Pulling out the resistor packs is how termination is disabled.
Big Green Gumstick (Microcontroller Module): The USB port must be placed over the little ‘USB’ marker on the PCB as shown in the picture below. If not already installed, please install the four pin programming header to allow for future software updates (requires STLink V2 device currently). This is installed in the four-pin holes that say GND, SWSCK, SWDIO, 3.3V.
Voltage Regulator (LD1117V): There’s only one correct way for this to be installed. The big metal tab does *not* have to be soldered to anything. Please place the regulator such that it can be screwed in place into the mounting bracket. This helps with heat dissipation to the big green square around the regulator. It’s not strictly necessary to screw into the bracket, but is helpful because this is also a PCB mounting point and your device may flap around a bit without it.
Picture showing the resistor packs facing the correct direction:
