Parameter | Value | Comments |
---|---|---|
Maximum stacking depth | 52.5 mm | Approximately. The precise number will depend on your placement of the two micro-switches. |
Maximum speed[1] | 10 mm/s | Even higher speeds might be possible (~20 mm/s), but emergency breaking acceleration (which grows as the square of the maximum speed) will become too high for the rail's hardware |
Time to rewind from one end to the other[1] | 6s | Moving at the maximum speed and acceleration |
Breaking distance[1] | 1 mm | When travelling at the maximum speed |
Time to speed up or break | 0.2s | Time to get to the maximum speed and break when moving at the maximum speed and acceleration |
Smallest step | 0.63 μm | One microstep |
Backlash | 200 μm | Loss of accuracy when switching the direction of the motion; not cumulative. Starting from s0.10 the backlash is fully compensated. Starting from s2.0 backlash can be compensated in either direction. (So camera can be pointing up or down.) |
Minimum distance between frames[1] | 0.63 μm | Corresponds to one microstep of the stepper motor |
Maximum distance between frames[1] | 5000 μm | Can be set to higher in software (MSTEP_MAX) if needed |
Minimum framerate[1] | 0.01 fps | Can be set to any other number in software (FPS_MIN) if desired |
Maximum framerate[1] | 4.5 fps | Can be set to any other number in software (FPS_MAX) as long as your camera and flash can handle it |
Minimum number of shots[1] | 2 | In 1-point stacking |
Maximum number of shots[1] | 9999 | In both 1 and 2 point stacking |
Maximum number of stacks[1] | 999 | In timelapse mode (N_TIMELAPSE_MAX) |
Maximum interval between stacks[1] | 9999 s | In timelapse mode (DT_TIMELAPSE_MAX) |
Maximum total timelapse length | 50 days | This is the limit of the Arduino's millisecond accuracy timer, millis() |
Number of memory registers | 5 | Each register can store the whole current state of the rail |
Minimum input voltage | 9V | Depends on the mass of your camera/lens; at lower voltage the stepper motor will start skipping steps |
Maximum input voltage | 15V | 15V is the absolute maximum input voltage for the voltage regulator. |
Maximum load | >1.0 kg | Maximum weight which can be moved by the rail without skipping the steps, at any angle (including moving the camera up vertically). I haven't tested >1 kg cases. |
Weight, total | 1.41 kg | Including Velbon Mag Slider rail with the sideways motion module and 8 AA Eneloop batteries |
Weight, motor unit | 888 g | Including Velbon Mag Slider with the sideways motion module; just the motor unit weighs 424 g |
Weight, controller unit | 518 g | Including 8 AA Eneloop batteries |
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