Final step will be to show the X & Y slider coordinates on the blue OLED display. Next milestone: simulated sending the positional telemetry information back to the HelTec ESP8266 executing Blynk. See Camera Slider X-axis and Y-axis video - blue pot with stars See Camera Slider X-axis and Y-axis video - world globe map bottle. The second video shows the clay pots again, but with a Y-axis camera pan this time. It was carefully positioned to give a total solar eclipse of the wine stopper passing thru the sunlight. The first video shows the trolley moving 400mm down the rail with the camera panning to keep the wine bottle (at 250mm down the rail and about 500mm away) in center-focus. The 3rd and 4th pictures show the slider trolley with its one big roving camera eye.
I used two 1/4"-20 hex standoffs to raise the pan mount so the stepper would clear the camera mount on the trolley beneath it see picture #2.
Arduino camera projects how to#
I cannibalized a pan mount from another slider and will figure out how to secure it to the Neewer slider the bolts and holes don’t line up. When I searched the Internet for NEMA17 pan/tilt mounts, the prices were so astronomical, I gave up for now. I removed the Neewer camera mount from the trolley. It’s even quieter with the timing belt not passing thru the bracket. The belt has a straight shot to the trolley instead of going thru the slots in the end bracket for the TurnsPro camera mount.
Invert the pulley bracket 180 degrees on the slider rail end so the pulley is on top now for the timing belt. PowerShot SX260HS X-axis Demo, Camera Slider Hardware, and iPhone 5 X-axis Demo
Here are some video clips right-click and hit start. That yellow sticky “flag” on the pulley is so I can see the pulley turning the black timing belt blends with the slider frame 100% and renders it almost invisible. Finally, I shot test videos showing X-axis-only movement down the rail. The NEMA17 stepper motor pulled the slider trolley easily with my 35mm Canon PowerShot screwed into a Neewer camera mount. This is not a finished product by any longshot it’s just for testing. It’s really quiet with the timing belt almost free-floating. Pretty much a bare-naked slider and trolley now with an Arduino Zero in a crystal project case hanging out the rear, but it worked perfectly. Finally, plugged the stepper-motor cable into the Arduino Zero header and plugged in the 12V 2A power plug. Next I dropped a pulley from an Amazon 3D-printer pulley kit onto the NEMA17 motor shaft, and secured the hex “grub” screws using the supplied Allen wrench. Using a new separate NEMA17 mounting bracket, I attached it to the slider base plate, then attached the motor to the bracket using 4 supplied bracket screws. Removed the TurnsPro Time Lapse camera mount and bracket from the Neewer trolley, and left the pulley and bracket attached to the other end. The first cut will be a single X-axis stepper on a Neewer slide rail just to get my feet wet. It’s designed to shoot 35mm stop-motion, 35mm slow-motion, or full-motion video. This first schematic is a starting point Maybe I’m going to hack this to what I want to do ultimately with either IR, BlueTooth, or WiFi remote control via an iPhone App and ultimately Blynk.
X-axis control could be a heavy-duty stepper motor, and the Y & Z-axis (pan and tilt) could be two lighter-weight servo motors that draw less current. Elaboration - Would it be an expensive, ready-made unit, or a DIY (do it yourself) solution using off-the-shelf components readily sourced on the internet? Would it use servos, stepper-motors, or DC brushless motors? Would it use 3-D printed plastic parts, CNC routed parts, or just simple bolts, nuts, rails, and mounting plates? Would its motion be X-axis movement down the rail, or pan and tilt (Y and Z-axis) movement as well? Should I use an inexpensive off-the-shelf rail slider to speed up construction and add my own motors and electronics, or start from scratch and design that just for the experience?
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