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Notes on activity:* by warren

Prototype: filter map tiles in real-time in a browser with ImageSequencer (NDVI Landsat)

by warren 12 days ago | 7 | 279 | 1

I've been working with the new Image Sequencer, a Public Lab project, to try ...

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Prepare an SD card for a Raspberry Pi camera from scratch

by warren about 1 month ago | 0 | 247 | 2

In a perfect world, our Raspberry Pi Zero W would hook up to the camera, connect to the wifi, and...

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Hand-cut or lasercut a simple DIY microscope stage

by warren about 1 month ago | 1 | 166 | 1

We're working on simpler and cheaper ways to make good DIY microscopes, working from this @partsa...

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Collaboratively document an event with a mini newspaper

by warren 2 months ago | 2 | 127 | 2

Documentation can be tough at a big, busy event like our Barnraising! We see this activity as a l...

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Visualize live sensor data with p5js and an Arduino

by warren 3 months ago | 6 | 476 | 2

(This is a draft!) I made a simple p5js sketch (read below) to live sensor data off of an Arduino...

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Assembling the Public Lab Lego Spectrometer

by warren 5 months ago | 7 | 1,973 | 7

Follow these steps to assemble a Lego Spectrometer, for use with the Raspberry Pi...

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Embed a Q&A system on another website

by warren 6 months ago | 0 | 136 | 1

Our Q&A system is based at -- ...

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Help document how to connect different sensors to a data logger

by warren 6 months ago | 0 | 237 | 1

We have a range of data logger projects on the site, most of which are Ardu...

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Build a papercraft spectrometer for your phone -- version 2.0

by warren 6 months ago | 1 | 9,328 | 5

After a few years, we're returning to one of our oldest kits to update and improve it, building o...

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Make a narrow slit for a DIY spectrometer out of paper

by warren 6 months ago | 1 | 1,915 | 3

Spectrometers (see #spectrometry) require a narrow slit for light to pass through, so you can get...

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Use Git and GitHub to contribute and improve Public Lab software

by warren 6 months ago | 0 | 190 | 1

Public Lab software is written in many languages, and each project may have its own guidelines fo...

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Draft: Find the concentration of a liquid with a DIY spectrometer

by warren 6 months ago | 3 | 1,398 | 1

If you have a solution of unknown concentration -- for example, a water sample that's greenish or...

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Scan and compare different gases (in discharge tubes, like neon) using a DIY spectrometer

by warren 7 months ago | 0 | 742 | 2

A common classroom activity I remember is to scan different excited gases (safely inside glass tu...

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Set up a Mobius Action Cam for timelapse

by warren 7 months ago | 0 | 381 | 2

The Mobius Action Cam is used in the Infragram Point & Shoot, and ...

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Change the white balance (or other configuration) on a Mobius camera

by warren 7 months ago | 0 | 332 | 2

This is part of the documentation of the Infragram Point & Shoot b...

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Getting started with infrared photography on

by warren 7 months ago | 0 | 475 | 1

This tutorial walks through working with images on, which is an ea...

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Update firmware on the Mobius Action Cam

by warren 7 months ago | 0 | 238 | 1

If you're having trouble setting the white balance on your Mobius Action Cam (used in the [Infrag...

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Install a filter or change the lens in a Mobius Action Cam

by warren 7 months ago | 0 | 393 | 2

This activity shows how to install a custom filter and/or change the lens in the Infragram Point ...

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Request for kite/balloon mapping help at Tidmarsh Farms wetlands restoration in Plymouth MA

by warren 8 months ago | 0 | 309 | 1

A LOT of events are coming up across the Public Lab network, folks -- this one on Saturday, Octob...

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Draft: Collect a sample for laboratory analysis

by warren 9 months ago | 2 | 301 | 2

This is a draft, adapted from the DIY Oil Testing guide, authored wi...

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Remove lens distortion from photos with FisheyeGL

by warren 9 months ago | 7 | 770 | 6

FisheyeGL is a new online tool for removing lens...

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