Is there an electrically testable "Benchy" for Pick-and-Place machines?

[John Laurence Poole]

Subject: Is there an electrically testable "Benchy" for Pick-and-Place machines?

I'm expecting delivery of an AFARCO PnP V3 in a few weeks and have been thinking about how to validate its performance using inexpensive, sacrificial components and PCBs.

The analogy that comes to mind is 3DBenchy, the small boat used to test and evaluate 3D printers.

I've found the OpenPnP Demo Board and Opulo's Functional Test Placement (FTP) board, but what I'm particularly interested in is a test PCB that can be fully assembled, reflow soldered, and then electrically tested.

For example, a PCB containing multiple resistor voltage dividers at different locations and component orientations would permit measurements at test points to verify electrical continuity after reflow. Additional circuits using inexpensive LEDs, capacitors, or small ICs could validate polarity, rotation, and finer-pitch placement.

Ideally, the test would cover the complete process: feeding, pickup, bottom vision, placement, solder paste, reflow, and electrical continuity.

The emphasis would be on inexpensive, readily available components, so that assembling and testing multiple boards would be practical without wasting valuable parts.

Has anyone developed or used such an electrically testable PCB as a commissioning or repeatability benchmark for OpenPnP machines? I'm particularly interested in existing KiCad designs with BOMs, placement files, and electrical test procedures.

[Jarosław Karwik]

Most test boards I have seen contain only unconnected parts - as you can test  Pick-and-Place performance judging component placement under microscope before soldering as soldering covers inaccuracies in placement.

Also you introduce re-flow oven in the chain - which brings its own issues ( like tombstone faults )

I can share this one if you are interested ( Kicad)

[John Laurence Poole]

Hi Jaroslaw,

Yes, please.  I'll then try to get pricing on the quantity and materials needed so we have total cost for components.

Thank you,

John

--
You received this message because you are subscribed to a topic in the Google Groups "OpenPnP" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/openpnp/S4D2J-sXwsE/unsubscribe.
To unsubscribe from this group and all its topics, send an email to openpnp+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/openpnp/5a9be4b2-01f7-4bf2-a33e-cfbc2a3bb77dn%40googlegroups.com.

--

John L. Poole

Salem, Oregon

707-812-1323

[Jarosław Karwik]

I have finally placed it in github

https://github.com/jarekkt/openpnp_pcb_demo_board