Joanne Long

Newsletter

New higher current range Rodeostat potentiostat

We have added a new higher current range potentiostat to the electrochemistry product line! The new Rodeostat HC is very similar to the Rodeostat Open Potentiostat, except the measurable current ranges are ± 10, 100, 1000 and 10,000 μA. Rodeostat HCThe Rodeostat HC is a higher current range version of

Newsletter Featured

Rodeostat ItsyBitsy M4 Express available for order now!

We are excited to launch our new Rodeostat M4 version! The new design uses the Adafruit ItsyBitsy M4 Express microcontroller board instead of the Teensy 3.2 board (which is currently unavailable). The new design offers the same functionality and is available at our online store now! You can order

Newsletter

GOSH presentation video and slides

This week we gave a 20-minute presentation to the GOSH Community. We covered a few different topics outlined in the agenda below. It was particularly fun to revisit our journey over the last 13 years, from mostly consulting on custom open hardware instrumentation to shipping open hardware products around the

Newsletter Featured

Global adoption of DIY Technology

Highlighting a recent paper by Tobias Wenzel

Featured

Rodeostat Firmware Guide | IO Rodeo x GOSH

New Rodeostat firmware guide & registration link for upcoming GOSH presentation

Newsletter Featured

Bradford Protein Assay with the Open Colorimeter

Highlighting a project from the community which uses the Open Colorimeter to quantify protein concentration in milk

Newsletter Featured

A Streamlit app for custom colorimeter calibrations

Highlighting the oc-calibration-app developed using Streamlit for the Open Colorimeter.

Newsletter

Open Hardware survey, OSHWA certification & upcoming changes to the online store

In this Newsletter: Open hardware survey, OSHWA certification & upcoming price changes

Newsletter

Spotlight on GOSH

GOSH is a global community of researchers, hardware developers, educators, community organizers and more dedicated to making open science hardware ubiquitous by 2025. In this newsletter we highlighted a few of their resources to introduce readers to their work.

Newsletter

New tools for creating a custom calibration for the Open Colorimeter

New documentation for creating custom calibrations for the Open Colorimeter.

Newsletter

New video tutorials & user guides for the Open Colorimeter

New instructional videos and user guides for the Open Colorimeter. Link to subscribe to our YouTube channel.

Newsletter

New tutorials for customizing the Open Colorimeter

Highlighting new tutorials for customizing the Open Colorimeter

Newsletter

Ammonia, nitrate and nitrite Open Colorimeter assays for water quality testing

Testing three water quality tests for the Open Colorimeter. These assays are ammonia, nitrate and nitrite.

Tutorials

Nitrate-API colorimetric assay

Colorimetric assay for measuring nitrate levels using API test kit. Range: 0-50ppm

Tutorials

Ammonia-API colorimetric assay

Colorimetric assay for measuring ammonia levels using API test kit. Range: 0-8ppm

Tutorials

Nitrite-API colorimetric assay

Colorimetric assay for measuring nitrite levels using API test kit. Range: 0-2ppm

Newsletter

New Rodeostat MX design

New Rodeostat MX design & Open Colorimeter updates.

Newsletter

Open Hardware Month & Colorimeter Documentation

October is Open Hardware Month. Update on Open Colorimeter documentation.

Newsletter

Open Colorimeter CircuitPython Firmware

Update on the Open Colorimeter CircuitPython firmware

Tutorials

Measuring blue food dye in sports drinks

Goal: Use the Open Colorimeter to experimentally calculate the molar extinction coefficient of FD&C Blue #1 Beer’s Law states that absorbance of a sample (Abs) depends on the molar concentration (c), light path length in centimeters (l), and molar extinction coefficient (ε) for the dissolved substance at the

Newsletter

Open Colorimeter hardware and testing

Open Colorimeter with Beer's Law experiments & measuring food dyes in drinks

Newsletter

Characterizing LEDs and sample absorbance spectra with a USB spectrometer

Characterizing LEDs and sample absorbance spectra with a USB spectrometer

Newsletter

New Rodeostat enclosure

Highlighting a new 3D-printed enclosure and a new 50K dummy cell.

Newsletter

Open Colorimeter hardware design update

Design of a new 3D-printed enclosure for the Open Colorimeter using FreeCAD

Newsletter

Rodeostat in peer-reviewed publications

Highlighting ways the Rodeostat open source potentiostat has been used in science research and education