# PostalPoint Hardware This repository contains open source hardware and software for package drop-off lockers and parcel dimensioning. Devices are built around the Pi Pico and MicroPython, and support both bidirectional USB HID and serial communication with a host computer. # Devices ## Parcel Dimensioner This device uses a US-100 or Parallax Ping ultrasonic sensor to measure the height of a package and transmit the size to a PC. By rotating the package, all the dimensions can be determined. It optionally supports output to a SSD1306 OLED screen and hardware buttons for zero/tare and unit switching. The PCB files assume a US-100 sensor, two 6mm tactile buttons, and a 128x64 SSD1306 OLED module. ### Installing The files in src/dimensioner must be copied to the Pi Pico. Dependencies: Install these MicroPython packages on the Pico: usb_device_hid, ssd1306 ## Package Locker Kiosk Controller See source code in src/kiosk and schematics. # License See LICENSE.md.