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OpenPNP

New All-3D-Printed Tape&Reel Feeder

Introducing the new PushPullFeeder, the hardware side of the ReferencePushPullFeeder in OpenPNP. Inspired by Dining-Philosopher’s Litefeeder and Jed Smith’s Litefeeder++ friction wheel, this feeder has the following design goals and ideas: Use case: prototyping/very small runs. All 3D-printed, no hardware (screws, springs etc.) required. Complete solution: reel holder, feeder mount, …

OpenPNP: New ReferencePushPullFeeder

Made a new Pull Request for the ReferencePushPullFeeder class in OpenPNP (Update: the PR is now merged into OpenPNP 2.0). This is the software side of the all 3D-printed PushPullFeeder: Generic implementation for a feeder that can feed parts by performing push and pull (and other) motions using a head-mounted …

OpenPNP: New BlindsFeeder

This is a new cut-strips feeder for true prototyping and very tiny runs. It is considered the “next step up” from the ReferenceStripFeeder.

OpenPNP: Actuator based Pick+Place, Contact Probing Nozzle

As part of the general overhaul of Version 2.0 of OpenPNP and as the basis for a new ContactProbeNozzle, the vacuum pump, valve and picking and placing have been reworked into a unified Actuator based design.

Smoothieware: Adding Mid-Axis Homing

(footage credits: Mike Menci) Pick&Place multi-nozzle machines share one physical actuator to create the two nozzles’ Z axis in a counterweight, seesaw or rocker configuration (when one is moving up, the other is moving down).

OpenPNP: Improved Runout Compensation, Bottom Camera Calibration

To improve OpenPNP nozzle and nozzle tip runout compensation, I added a new calibration model, automatic (re-) calibration and also a bottom camera position and rotation calibration.

Smoothieware: Problems with mixed Axes

The motion controller firmware most popular with OpenPNP – Smoothieware – had problems with mixed primary (linear) + secondary (rotary) axis moves. I tried to fix that … read the saga about that in the Pull request ;-).

OpenPNP: Extending Bottom Vision

To improve accuracy of placement and to support multi-nozzle machines with shared rotation axis, I extended bottom vision with pre-rotate in OpenPNP.

Grounding the Machine

“The Ground Rules”…

Camera Selection

Comparing my ELP camera modules to the Liteplacer camera upgrade kit.