BTCMiner is a specialized software for Bitcoin mining that enables users to profit from their ZTEX USB-FPGA Modules. These FPGA boards come with a USB interface, eliminating the need for additional hardware like a JTAG programmer, which allows for the creation of cost-effective FPGA clusters utilizing standard USB hubs. The software features dynamic frequency scaling and overclocking, selecting the optimal frequency that yields the highest number of valid hashes by assessing error rates. A single instance of BTCMiner can manage numerous FPGA boards, potentially numbering in the hundreds, depending on the available USB host controllers. Users can add or remove FPGA boards while the system is running, enabling flexible management of their mining setup. Additionally, it includes capabilities for enumerating FPGA boards and partitioning clusters based on those identifiers. The software also features a power-saving mode that activates after five minutes of inactivity, along with temperature monitoring and automatic shutdown to prevent overheating (with support for the USB-FPGA Module 1.15y rev. 2). If the error rate rises excessively, an automatic shutdown will occur as a fail-safe to protect the hardware. With its robust features, BTCMiner provides a comprehensive solution for those looking to maximize their Bitcoin mining efficiency.