BTCMiner is a software application designed for Bitcoin mining that enables users to profit from their ZTEX USB-FPGA Module. The design of these FPGA boards includes a USB interface, eliminating the need for additional hardware such as JTAG programmers, which facilitates the creation of cost-effective FPGA clusters utilizing standard USB hubs. The software features dynamic frequency scaling and overclocking based on error metrics, allowing BTCMiner to automatically select the optimal frequency that yields the highest number of valid hashes. A single instance of the software can manage numerous FPGA boards—potentially hundreds—limited only by the availability of USB host controllers. Users can add or remove FPGA boards in real-time, and the software supports enumeration of the boards along with cluster partitioning based on these identifiers. It also incorporates a power-saving mode that activates after five minutes of inactivity per command. Additionally, it includes temperature monitoring and an overheat shutdown feature for the USB-FPGA Module 1.15y rev. 2, providing further protection against overheating by shutting down the system if the error rate increases excessively. This comprehensive approach ensures both efficiency and safety in Bitcoin mining operations.