Module with a digital distance sensor with a range of up to 5 cm. It has a digital output that goes low when an object is detected. Pololu 4050

Module with a digital distance sensor with a range of up to 10 cm. It has a digital output that goes low when an object is detected. Pololu 4052

Module with a digital distance sensor with a range of up to 15 cm. It has a digital output that goes low when an object is detected. Pololu 4054

Module with a digital distance sensor with a range of up to 50 cm. It has a digital output that generates a pulse with a width proportional to the measured length. Pololu 4064

Module with a digital distance sensor with a range of up to 25 cm. It has a digital output that goes low when an object is detected. Pololu 4066

Module with a digital distance sensor with a range of up to 50 cm. It has a digital output that goes low when an object is detected. Pololu 4067

Module with a digital distance sensor with a range of up to 100 cm. It has a digital output that goes low when an object is detected. Pololu 4069

Module with a digital distance sensor with a range of up to 200 cm. It has a digital output that goes low when an object is detected. Pololu 4077

Module with a distance sensor with a range of up to 130 cm. It has a digital output that generates a pulse with a width proportional to the measured length. Pololu 4071

Module with a distance sensor with a range of up to 300 cm. It has a digital output that generates a pulse with a width proportional to the measured length. Pololu 4079

Step-Up/Step-Down converter module based on the S13V30F5 system, input voltage from 2.8 to 22 V, output voltage 5 V. Current efficiency of the converter 4 A. Pololu 4082

Adapter for the 6-pin JST SH connector (horizontal) with a pitch of 1 mm to the DIP holes, pitch of 2.54 mm. The set includes 3 modules. Pololu 4773