Solder the 4.7K ohm resistor for the DS18B20 from the 3V line to GP6 on the PiCowbell. Then, solder a 220 ohm resistor from GP10 to one of the prototyping rails on the PiCowbell.
Solder the black wire of the JST cable to the GND pin on the PiCowbell. Solder the red wire of the JST cable to the prototyping rail connected to the 220 ohm resistor.
Solder the DS18B20 to the PiCowbell.
- Blue wire to PiCowbell GND
- Red wire to PiCowbell 3V
- Yellow wire to the prototyping rail next to GP6
Take the remaining plug end of the JST cable and slip a piece of heat shrink over each of the wires.
Solder the LED cathode to the black wire on the JST cable. Solder the LED anode to the red wire on the JST cable.