Openpnp setup

Openpnp setup

Select the Up Looking Camera tab. Note, that the camera used does not automatically change, and the camera used is not automatically activated this is because otherwise, solving problems would be difficult in some cases. Select camera from the selection box and click select. If needed, repeat until image from the up looking camera appears.

Go back to down looking camera tab, and press Select without changing the selected camera in the selection box. Come back the up looking tab and select this camera again. Place a ruler above the camera so, that its edge aligns to the middle of the image.

Go back to down looking camera tab and align the ruler with the cross machine X axis. With the help of this ruler, adjust the alignment of the up-looking camera. Like you did with the down camera, use a mirror to adjust the skew of the up looking camera. Leave the thrid bolt alone. This might be awkward, sorry about this. For inspiration, this is how I did it on my machine:. I used a corner of a mirror to get access to the adjustment screws. I turned the power off so that the light reflection from the mirror did not blind the camera.

Finally, in my low lit basement lab, I used a flashlight to get some light in the hole. This is what I saw:. Blurry and somewhat difficult to adjust, but gets it done. It is not quite right yet in the above image, as you can hopefully see. Once satisfied, measure the box size just like with up looking camera, and put the values to the boxes. Once you are happy with the camera tuning, add a light diffuser: Take the supplied diffuser material sheet and cut a hole to it.

This hole should be at least the size of the biggest nozzle. However, it is planned to have a software upgrade to align parts on the nozzle; to be prepared for this, the hole could be the size of the largest part you are going to use. Switching the active video stream is handled inside LitePlacer software.

This consumes more USB bandwidth, but is the fastest method, if your system supports it. Previous — Next. Connect to camera Select the Up Looking Camera tab.

For inspiration, this is how I did it on my machine: I used a corner of a mirror to get access to the adjustment screws. This is what I saw: Blurry and somewhat difficult to adjust, but gets it done.

The easy way to tell the camera devices is the order where they are on the list; makes sure you select the upper in the list for one camera and the lower for another.

If you doubt this might be the issue, pay attention to the cryptic strings shown in the log window. Previous — Next Back.LinuxCNC is running with a Gecko G controller which drives the stepper motors as well as a vacuum pump and solenoid valve. The G outputs are low side switches refer to manual. The motor and solenoid valve were found on Amazon.

I may change these to something smaller. Before modifying the OpenPnP driver, the loads can be tested with the G controller. Pins 17 and 1 on the parallel port map to the outputs. The following g-codes are hijacked for vacuum pump and solenoid control.

M5 is the stop spindle command which will turn off the vacuum pump. M8 turns on the flood coolant which will turn on the solenoid valve to quickly release the air pressure and release the part from the nozzle. G4 is a dwell command and P0.

openpnp setup

M9 turns off the solenoid returning it to its normally closed position. Channel 1 is set to motion. Components are capacitors. This is part of a larger setup that will use OpenPnP. The following circuit can be used to drive the loads: Before modifying the OpenPnP driver, the loads can be tested with the G controller.

Manually written G-Code to actuate nozzle and vacuum. DROP Part 1. Pick up Part 2. Drop part 2. Drop part 3. Drop part 4. Part 4 to location 1.Typically this is just a small piece of code that translates OpenPnP commands into commands for a particular motion controller such as Smoothie, TinyG, Marlin, etc.

Go to the Machine Setup tab and select the root node of the tree. On most setups it's called "ReferenceMachine". A setup panel will appear on the right. In the setup panel, select the driver that most closely matches you motion controller or machine. Most machines should use the GcodeDriver. Click apply.

Category Archives: OpenPnP

You should use GcodeDriver unless you have very specific driver requirements. Most of the drivers in OpenPnP communicate using the serial port. Before you can connect, you need to set the serial port and baud rate for your controller.

Now that the driver is configured, press the green power button to connect to your controller. If all goes well the button will turn red and the rest of the controls will become enabled. If there is an issue OpenPnP will give you an error message.

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If your machine connected successfully it's time to home it. If you don't have home switches installed you can skip this step. To home the machine click the home button. With the machine homed, you can now try jogging the machine to make sure everything is working well.

Set the Distance slider to 1mm and click the jog buttons to move the head around. Make sure that the machine moves in the directions specified by the buttons.

Using OpenPnP

If it doesn't, check your controller configuration. Skip to content. Setup and Calibration: Driver Setup Jump to bottom. Choosing a Driver Go to the Machine Setup tab and select the root node of the tree.

OpenPnP will prompt you to restart the program, so do that. It should be near the bottom, under the Driver branch. Select it and a setup panel will appear. Select the serial port and baud rate for your controller and press the Apply button. Connect Now that the driver is configured, press the green power button to connect to your controller. Homing If your machine connected successfully it's time to home it. Jogging the Machine With the machine homed, you can now try jogging the machine to make sure everything is working well.

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OpenPNP: New ReferencePushPullFeeder

Before You Start. Top Camera Setup.This article is about a project I have started back in January As for many of my projects, it took longer than anticipated.

But now it is working, and the result is looking very good: a DIY automated pick and place machine to place parts on circuit boards. In the age of cheap PCBs, that machine closes the gap for small series of boards which have to be populated in a time consuming way otherwise. The motivation of building such a machine is that at the university we are populating boards by hand:.

The problem is that this all takes a lot of time. Doing it for one board is one thing, but doing it for boards takes too much time. Clearly, for mor than 50 or boards, outsourcing is the logical choice. But for a few boards as we usually have to do, outsourcing is not the best option as it is expensive and takes a lot of time too.

What I wanted is a machine to automate the manual placing of components. So I thought: why not building one myself too? And here we go OpenPnP offers a framework to run such a machine. They have guides and tutorials how to build such a machine.

And it is up to you how you build it and what features get added. The machine uses 24V stepper motors for X, Y and Z axis. Two smaller stepper motors on the head C1, C2 can be rotated. Attached to the head is a down-looking camera. Below are pictures of the machine under construction with some details. I hope this gives you ideas and an inspiration to build your own machine.

It is responsible for all the sensors and drives all the motors. The picture below shows first tests with a stepper motor:.When you first install OpenPnP it comes with a set of defaults that simulate a machine so that you can try it out. When you start to set up OpenPnP for your real machine, you need to remove some of those defaults so they don't interfere with your machine. Delete it.

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Lens calibration can be used to remove lens distortion from your camera. It can also remove the fisheye effect from short lenses. An easy way to tell if you need lens calibration is to hold a piece of graph paper in front of it and see if the lines look curved in the image.

If they do, check out Camera Lens Calibration to learn how to correct it and then come back to this page to continue the rest of the setup. When you look at the camera image in OpenPnP it should be right side up. Depending on how your camera is mounted, this might not be the case. By setting transformations in the camera configuration you can adjust the image so it appears correct.

A Top Camera image should appear as if you are looking down at the machine. The top of the image should be away from you, the bottom of the image should be towards you. A Bottom Camera image should appear as if you are looking onto a mirror laying on the floor reflecting a view up from the camera towards the nozzle. Again the top of the image should be away from you, the bottom of the image should be towards you.

But because left and right should remain left and right and it is actually a mirror imageyou usually need to enable either Flip Vertical or Flip Horizontal depending on how you mounted the camera.

If you need to make adjustments:. OpenPnP needs to know how large a pixel is in real world terms so that it can measure things correctly when performing computer vision. This is the most important configuration for a camera, so it's worth taking the time to get it right. There should now be a crosshair with evenly spaced lines in the camera view. Line up the center of the crosshair with one of the lines on your ruler and the rest of the lines should line up closely.

It's okay if they don't line up perfectly as they get to the edges of the image but the lines in the center half of the image should be quite close to the lines on the ruler.

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If the lines don't line up, check that you've performed this step correctly. If they do line up in the center but rapidly get worse the further you look from center, read the Lens Calibration section below to perform correction. Settle time is the amount of time it takes for your camera to adjust to what it's looking at before a picture can be taken.

This usually takes into account any blur from the end of a movement, along with time needed to perform any auto exposure or focus operations.

OpenPNP 30_01_2018 - 1

The default settle time is milliseconds. If you find that things like fiducial checks are getting blurry images, you may need to increase the settle time. Skip to content. If you are adding a head mounted camera down looking, fiducialfind the head in the tree on the left.

Under the head look for Cameras and select it. If you are adding a machine mounted camera up looking, bottom visionfind Cameras under the root of the tree and select it. Add a camera by pressing the green plus button. Select a camera driver from the provided list.M-Code steered Arduino Mega Shield to control servos in 3d printed feeder. Additionally firmware has capabilities to read some analog channels e. Used in combination with 3d printed automatic feeder. Use Arduino IDE to build and upload to microcontroller.

Precompiled files are not available. Adapt firmware to your needs by modifying config. Most of the settings should not need to be touched as they are preconfigured properly already. Anyway there is a config. Open serial monitor within Arduino IDE and see whether the controller works. There should be messages on startup that inform about the settings hold in eeprom. Test some commands in the serial monitor to see whether communication works as expected before setting up in OpenPnP.

In combination with the native shield all 4 pin connect to the controller. If you chose to use the sensor shield, the feedback line is left unconnected. The native shield has the maptable printed on. For the sensor shield the maptable is as the image depicts:. The following commands should work if everything is setup properly.

A full list of available commands is listed below. If the feeder doesn't move and an error pops up on the console, check the feeder status with. If it reports an error, the feedback-line might not setup properly. Fix it by checking the cabling. Temporarily the error check can be overridden by adding X1 to the feed command:.

The firmware comes preset for the feeders mechanics.

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But it may be the case, that the servo angle is a little different from manufacturer and how the servo controller handles the incoming PWM signal. For this reason every feeder has a configuration set. The current configuration setting per feeder is printed with. The meaning of each argument is to be seen in the detailed list.

Once found a proper configuration, set the values globally in config. The feeder and its controller are designed to suit well to OpenPnP, so nothing special is required to get them to work with OpenPnP. To set up one or more feeder follow the next three steps. In general, there are as many actuators needed as feed lengths are desired. Example: The feeder shall be able to feed 4mm resistors8mm some ICs and 12mm there will be 3 actuators to be created, each for one feed length.

Every feed-length has to be setup only once, not per feeder. See machine. For each actuator the G-Code passed to the controller when a feed command is issued has to be added example below. The feed command is M per default. The Parameter N is the index of the feeder zero based and F the feed length in millimeter. Please note that the actuator's name and the value for the parameter F correspond each other. In the actuators tab click one of the actuators just setup.

openpnp setup

Add a ReferenceAutoFeeder in the feeder tab for every physically existing feeder lane.Actuators are generic devices you can attach to your machine to do additional tasks not covered by Nozzles and Cameras. For instance, you can use a solenoid with a pin attached to the head to drag a tape forward to feed it. You can also use Actuators to read values from sensors attached to the machine.

Using the Scripting system you can use Actuators to extend OpenPnP to control a wide array of devices and sensors. Once you've created an Actuator, you will generally need to assign commands to it. The most common case is using GcodeDriver and boolean actuators to control something like a switch, a solenoid, a pump, a valve, etc.

openpnp setup

Another common use of Actuators is to read a sensor, with vacuum level sensors being the most common. To read a sensor using the GcodeDriver the steps are a little different than the above. See actuate-boolean-command.

See actuate-double-command. See actuator-read-command. See actuator-read-regex.

openpnp setup

See Setting Head Offsets for the general process. It is basically the same for Actuators. Skip to content. Setup and Calibration: Actuators Jump to bottom. Actuators Actuators are generic devices you can attach to your machine to do additional tasks not covered by Nozzles and Cameras. Auto feeder triggers. Nozzle vacuum pressure sensing. Drag feeder solenoid pins. Camera lighting control. Adding Actuators Open the Machine Setup tab.

If you are adding a head mounted actuator, find the head in the tree on the left. Under the head look for Actuators and select it. Head mounted actuators are often attached to devices such as drag feed solenoids and nozzle change tools.

If you are adding a machine mounted actuator, find Actuators under the root of the tree and select it. Machine mounted actuators can be used for things like conveyors and lighting. Add an actuator by pressing the green plus button. Select a actuator driver from the provided list and press the "Accept" button. The newly added actuator will show up in the actuators list.

Click on the name of the new actuator to open it's properties.


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