Abstract: A system comprising a power source, a RASPBERRY PI Hardware Attached on Top (RPI HAT) with an Uninterruptable Power Supply (UPS), and a RASPBERRY PI (RPI) is provided. The power source provides power to the RPI via the RPI HAT. The RPI HAT comprises a super-capacitor (SC) back-up system comprising an SC power bank and compatibility circuitry configured to charge the SC power bank to a sufficient level such that the SC power bank is usable as a back-up power supply in response to the loss of power from the power source. The SC back-up system is electrically coupled to the power source such that the power source is capable of charging the SC power bank and the SC power bank discharges and provides power to the RPI in response to a loss of power from the power source to the RPI.

Abstract: A system comprising a power source, a RASPBERRY PI Hardware Attached on Top (RPI HAT) with an Uninterruptable Power Supply (UPS), and a RASPBERRY PI (RPI) is provided. The power source provides power to the RPI via the RPI HAT. The RPI HAT comprises a super-capacitor (SC) back-up system comprising an SC power bank and compatibility circuitry configured to charge the SC power bank to a sufficient level such that the SC power bank is usable as a back-up power supply in response to the loss of power from the power source. The SC back-up system is electrically coupled to the power source such that the power source is capable of charging the SC power bank and the SC power bank discharges and provides power to the RPI in response to a loss of power from the power source to the RPI.

Abstract: A system for securely delivering packages of at least two different sizes by a sender to a receiver is disclosed comprising, installing an array of lockers of at least two different sizes with the number of lockers of each size based on a predetermined installed ratio, a central control unit for controlling the locking portions on the array of lockers having a locker optimization unit adapted to use data collected on the frequency of use of each size of lockers to recommend a ratio of lockers of each size to maximize usage of lockers of appropriate size in the array, wherein if the recommended ratio is different from the installed ratio, changing the sizes of selected lockers after installation of the array to better match the recommended ratio by replacing doors without removing hinge pins and moving and re-fastening the top and bottom walls of the lockers.

Abstract: A system comprising a power source, a RASPBERRY PI Hardware Attached on Top (RPI HAT) with an Uninterruptable Power Supply (UPS), and a RASPBERRY PI (RPI) is provided. The power source provides power to the RPI via the RPI HAT. The RPI HAT comprises a super-capacitor (SC) back-up system comprising an SC power bank and compatibility circuitry configured to charge the SC power bank to a sufficient level such that the SC power bank is usable as a back-up power supply in response to the loss of power from the power source. The SC back-up system is electrically coupled to the power source such that the power source is capable of charging the SC power bank and the SC power bank discharges and provides power to the RPI in response to a loss of power from the power source to the RPI.

Abstract: A system for securely delivering packages of at least two different sizes by a sender to a receiver is disclosed comprising, installing an array of lockers of at least two different sizes with the number of lockers of each size based on a predetermined installed ratio, a central control unit for controlling the locking portions on the array of lockers having a locker optimization unit adapted to use data collected on the frequency of use of each size of lockers to recommend a ratio of lockers of each size to maximize usage of lockers of appropriate size in the array, wherein if the recommended ratio is different from the installed ratio, changing the sizes of selected lockers after installation of the array to better match the recommended ratio by replacing doors without removing hinge pins and moving and re-fastening the top and bottom walls of the lockers.