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Joanne Long

Joanne Long

I am a co-founder of IO Rodeo working to develop great relationships with our customers and collaborators! I'm interested in exploring how open hardware benefits science research & education for all.

Testing a lead colorimetric assay

Testing a lead colorimetric assay

In this blog post we describe our initial testing of a colorimetric kit for measuring lead in drinking water. In 2015, a Virginia Tech research team [http://flintwaterstudy.org/about-page/about-us/] found that over 40% of the homes in Flint, MI had elevated lead water levels with 25% of homes

Measuring emission spectra for the blue LED transilluminator

Measuring emission spectra for the blue LED transilluminator

Our blue LED transilluminators [https://iorodeo.com/collections/gel-imaging] use a 470 nm LED array in combination with blue and amber acrylic filters for viewing DNA bands in agarose gels stained with DNA dyes. Images of gels stained with Greenview, GelGreen and others can be seen in previous posts on

Irreversible Cyclic Voltammetry

Irreversible Cyclic Voltammetry

In this blog post we provide data from our testing of the new Rodeostat. We performed a side-by-side comparison between the Rodeostat and the Cheapstat potentiostat using ascorbate cyclic voltammetry experiments.

IO Rodeo Open Source Potentiostat

IO Rodeo Open Source Potentiostat

We have recently been working on a new potentiostat. The Rodeostat (initally referred to as a potentiostat shield) is an open source potentiostat for performing electrochemical measurements which is designed to work with the teensy 3.2 development board [https://www.pjrc.com/teensy/teensy31.html]. The Rodeostat is easily

Potentiostat dummy cells

Potentiostat dummy cells

One of our most frequently asked questions on the Forums [http://forum.iorodeo.com/] and via email is how to produce a calibration for the Cheapstat potentiostat. The Cheapstat potentiostat returns measured current values as raw unitless integers read from the ADC (analog to digital converter) at the output of

Online forum launched

Online forum launched

We have launched a new online forum: http://forum.iorodeo.com. Our aim in launching this Forum is that over time it will become a valuable resource for people interested in open source science equipment and DIYBio and grow to become a place to view frequently asked questions and discussions

Using an imaging enclosure for photographing gels

Using an imaging enclosure for photographing gels

Photographing gels is an important step in research projects that involve any kind of visual or quantitative DNA analysis by electrophoresis. Decent gel imaging requires a fairly simple set-up of a light-tight box with a transilluminator, camera and suitable filters. In research, teaching or DIYBio labs, finding a suitable light-tight