Quantity   Component name
2 × L293E STMicroelectronics
185 × BL-HUF33J-AV-TRB BL-HUF33J-AV-TRBCT-ND 1206 RED
1 × MB7070-100 1863-1024-ND ULTRASONIC SENSOR XL-MAXSONAR-WR
3 × Type A USB right angled PCB receptacle RS Stock No.909-7864
1 × Slide potentiometer linear taper 10K 20% RS Stock No.737-7789
2 × 20w IC socket stamped contacts RS Stock No.674-2444
4 × Transducer PCB magnetic 3.6Vpp 97dB RS Stock No.754-2065
1 × Adafruit Feather M4 Express - Featuring ATSAMD51
2 × RS PRO PCB Slide Switch Single Pole Double Throw (SPDT) Latching 3 A @ 120 V ac Top RS Stock No.: 734-7343 Brand: RS PR
2 × 5V USB power bank
1 × KEEP CLEAR PCB
8 × resistor 1206 zero ohms
6 × resistor 1206 2K ohms
1 × shcottkey diode 500 mW through hole
1 × 3/4" NPT lock nut