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Homemade Pneumatic Precision Press: Actuator Positioning Controlled by Ultrasonic Sensor and Arduino
Reddit r/robotics
A maker built a pneumatic precision press from off-the-shelf parts. The device detects the distance to the rod end (a black circular plate) with an ultrasonic sensor, and an Arduino controls the actuator's movement toward the target position. The maker used a 5/2 directional valve in an unconventional way, exhausting air from both sides of the cylinder to drive the rod, and because the effective areas at the two cylinder ports (port A and B) differ, used two pressure regulators to balance the forces and hold the rod at the target position.
Part of the event: Maker shares DIY ultrasonic-controlled pneumatic pressing device
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