Gemini Complex Corporation’s core product is Gemini Stimdeck, a digital tester designed for hardware functional testing. It uses the Gemini Test Bus to read and write logic levels, runs large numbers of test vectors against a connected device-under-test, and returns pass/fail results and failed cycles in the Web App. Hardware specifications include 400 digital channels, 50 Mbps vector execution speed per channel, 67M-vector burst depth, and latency below 10 nanoseconds.
The workflow is fairly complete: users first design a mezzanine DUT PCB that can connect to the Test Bus, then write test vectors in Dots, compile them into Stim binary files with Leda, and finally orchestrate execution through the prgm program. Dots is a DSL for test vectors, supporting pin definitions, driving high/low levels, expecting high/low levels, ignore bits, and repeat. prgm files use Fe, a minimalist Lisp dialect, and provide variables, functions, control flow, plus APIs such as load, run, runc, and get-fail-pins, making them suitable for complex test procedures. The Web App runs on the device’s local network and can queue test programs, view the queue, and inspect results.
The documentation states that the Leda compiler source code can be downloaded from GitHub and compiled on modern POSIX systems with GCC or Clang. However, it does not clarify whether the hardware, Web App, or VecOS are open source. For integration, the product relies on DUT Profile JSON for pin mapping, supports NFS mount for storing test files, and provides Altium Designer DUT board templates, schematics, BOM, Pin Map, and datasheets. The documentation is organized into Specs, Hardware, and Software sections, with plenty of examples that should help with real-world engineering implementation.
The website only provides a Get a Quote option and does not disclose pricing, licensing, warranty, or support SLA details. The main barrier is on the hardware side: users need to design a custom DUT board, and the template also requires Altium Designer and a valid license. Dots currently appears relatively basic, with the documentation noting that functions, loops, variables, and similar features are still being added.
It is better suited to chip, FPGA, PCB validation, and hardware testing teams than to general software developers. Information about access and payment from China is not disclosed, so whether it can be reached reliably via direct connection, purchased, or paid for from China remains unknown. Before adopting it, teams should request a quote and confirm delivery, after-sales support, network access, and possible local alternative testing equipment options.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on geminicomplex.com official site.
geminicomplex.com is an Unknown Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach geminicomplex.com directly.