The OKY3478-1 is a pressure sensor load cell amplifier IC manufactured by OKYSTAR. This IC is designed to amplify and digitize the load-cell signals, allowing them to be used by microcontrollers and single-board computers. It features a low-noise amplifier, on-chip temperature compensation technology, and thermal shutdown protection. The HX711 chipset is housed in a compact 8-pin DIP package, making it suitable for both PCB designs as well as breadboard projects. Furthermore, the device features a selectable gain of 32, 64, and 128 for optimum calibration of various types of load cells.