This video, the first in a series, details the teardown of the "processor" unit of an Opgen Argus Optical Mapping System, a DNA analyzer acquired for significantly less than its original $300,000 price. The unit's primary function is to handle microfluidic consumables, a process largely governed by an intricate pneumatic system. This system is meticulously examined, revealing a compressed air reservoir, a network of solenoid valves, a precise 500 microliter piston for volumetric control, and a custom-machined acrylic manifold for reagent distribution. Inside, the electronics include an unbootable embedded PC, a control board driven by a Cypress PSoC microcontroller, and a Peltier module for temperature regulation. Noteworthy design observations include an awkwardly placed FFC connector for the touchscreen and an ingenious double-action pneumatic cylinder for the consumable drawer. The video also introduces other high-end biotech equipment, like the Fluidigm Polaris and the Argus scanner, slated for future teardowns.
Exploring the Opgen Argus Processor: A Deep Dive into Biotech Pneumatics
0:00 High-Value Biotech Acquisition: The video introduces a large haul of formerly expensive biotech equipment, including a Fluidigm Polaris system and the Opgen Argus Optical Mapping System (a DNA analyzer), acquired for a total of approximately Β£380, far below their original combined cost of $700,000.
0:40 Opgen Argus System Components: The Opgen Argus system consists of several parts: a massive "processor" unit (the focus of this video), a smaller oil injector unit, and an imaging "scanner microscope" unit, which will be covered in a subsequent video.
1:46 Processor Unit Functionality: The processor unit features a touchscreen and a drawer for specialized consumable slides and carriers. It employs a pneumatic system to manipulate reagents within the microfluidic channels and a Peltier module for precise temperature control and thermal cycling.
3:23 Video Recording Experiment: The creator notes an experimental use of a DJI Pocket 3 camera to improve footage stability, inviting viewer feedback on potential motion blur or artifacts.
3:49 Oil Dispenser Teardown: A quick look at the oil dispenser reveals its robust construction, a specialized pump for precise oil volumes, and a standard industrial Din rail timer.
5:18 Internal Overview of the Processor: The processor unit's interior includes an embedded PC (rendered inoperable by a dead compact flash card), a substantial compressed air reservoir, a bank of solenoid valves, and a dedicated pump for compressed air.
7:10 Precision Fluid Handling: A 500 microliter volume controller, operating via a piston, is key to precisely metering air to control the movement of fluids within the microfluidic chips.
7:45 Drawer Mechanism and Control Electronics: The drawer, typically software-released, has a hidden physical override. Its control system features a Cypress PSoC microcontroller, stepper motor drivers, pressure sensors, and a Peltier cooler with a dedicated controller.
9:11 Design Observations and Quirks: A specific design flaw is noted where the touchscreen's FFC connector is inconveniently located on the underside of its PCB. Conversely, a clever double-action pneumatic cylinder effectively manages the drawer's retraction and vertical latching.
12:51 Custom Manifold and User Guidance: A well-machined acrylic manifold distributes air to the consumable cassette, and integrated LEDs serve as visual indicators to guide users on reagent insertion ports.
14:53 Key Takeaway - Sophisticated Pneumatics: The processor unit exemplifies a complex pneumatic system, featuring approximately 20 small valves and a highly precise piston volume control. The extensive use of pneumatics, including a hydraulic-pneumatic actuator for drawer motion, leverages the system's existing compressed air infrastructure for precise and controlled operations.
15:47 Future Teardown Plans: The components of the processor unit may be sold. The next video will focus on the Argus scanner microscope, followed by a detailed teardown of the "Apple-level aesthetic wankery" of the Fluidigm Polaris system.