Hey, so I know this has been done before so not much new here. After reading the various DIY PAR meter posts though I found that everyone has had to calibrate their sensors. Hoppy's latest iteration uses a sliding tube to adjust distance between the sensor and the lens/filters before securing in place.
This is a DIY PAR meter build from a mechanical perspective and hopefully I can get good readings just after assembly. I have all the components and will try to finish up this build in 2 weeks.
Here's a cross section of my design. The number, order, and distance of the filters to the sensors are all taken from one of Hoppy's designs.
EDIT: I've replaced the original diagram with this. This shows my design intent better. This version of the housing is meant to be a test bed for an integrated 3D printed acrylic housing. The undercut is meant to accept a Tap Plastic 2447 frosted acrylic sheet or a 3D printed acrylic part for testing purposes. Also I've updated it to show the filters I'm using. No big surprise here, it's a copy of what Hoppy used to have.
Here's a picture of the 3D printed housing. It's porous black nylon so it'll have to be sealed before dunking in water. The surface quality turned out much better than I hoped.
This is a DIY PAR meter build from a mechanical perspective and hopefully I can get good readings just after assembly. I have all the components and will try to finish up this build in 2 weeks.
Here's a cross section of my design. The number, order, and distance of the filters to the sensors are all taken from one of Hoppy's designs.
EDIT: I've replaced the original diagram with this. This shows my design intent better. This version of the housing is meant to be a test bed for an integrated 3D printed acrylic housing. The undercut is meant to accept a Tap Plastic 2447 frosted acrylic sheet or a 3D printed acrylic part for testing purposes. Also I've updated it to show the filters I'm using. No big surprise here, it's a copy of what Hoppy used to have.
Here's a picture of the 3D printed housing. It's porous black nylon so it'll have to be sealed before dunking in water. The surface quality turned out much better than I hoped.