A compact electro-mechanical control unit needs to be developed: a motor-reducer for connecting to an existing mechanism of gears and rails, controlled by a key with smooth lighting activation. Switch key - the mechanism is such that the key is inserted into the lock - different key turns trigger different actions. 1 - turning on/off the lighting 2 - starting the mechanism for lifting the covers A motor needs to be selected that will ensure smooth movement of the gears: The entire structure is 60x60 cm, and a small motor needs to be attached, along with miniature lighting. Part of the space for this is ready - if it's not enough, we will come up with a solution based on your recommendations.

Need a professional engineer to calculate and design a modular trailer platform with a load capacity of 60 tons for a ready-made chassis. There are factory drawings. Changes need to be made.

It is necessary to manufacture an aviation wing, I will provide the drawing or 3D model. I am considering materials such as: aluminum - extrusion or covered frame, carbon fiber composite materials your option.

It is necessary to refine the existing Bitclock rev3 PCB in KiCad. Project sources: https://github.com/goat-hill/bitclock/tree/master/bitclock-pcb/rev3a/kicad Task: 1. Change the size and shape of the board to fit the new STEP/3D model of the case. 2. Move/replace the current power connector with USB-C. 3. Redesign the monitor connection port to an 8-pin connector. 4. Arrange components so that the board fits correctly into the case according to the mounting points. 5. Preserve the existing functionality of the board. 6. Check the alignment of the board with the 3D/STEP model. 7. The output should include ready KiCad files + updated 3D model/fit check. Main requirement: a specialist in KiCad/PCB design is needed, who can work with STEP cases and mounting points.

It is necessary to design a mechanism for the remote opening of hopper lids (railway grain car) at an operating elevator. The unloading area has a roof and allows for unloading on 2 tracks simultaneously. The system must move from both sides of each track and have dimensions of 60 cm in width (there is a separation system that does not allow exceeding the specified dimensions). The system must be installed and move exclusively along the floor along the track and the movement of the cars (a suspended system cannot be implemented). The power supply is electric 380-220V, and the actuators can be either electric or hydraulic; pneumatics are not considered. The mechanisms for opening the lids have 2 types depending on the type of car, and also different locations for the locks themselves. The system must open and close the locks and have a video surveillance system for positioning the working organ that will open the hatch and move back and forth. The operator is located at a distance of 150-250 m and there is also the possibility of manual control next to the mechanism or from a remote control. I am attaching a diagram of the hangar, drawings of the aspiration layout, and analogs of the mechanism from an American manufacturer.