Common digital kitchen scales have a surprisingly high sampling rate in their sensor, but any data logging using a kitchen scale is limited to the sampling rate of the scientist writing down the data. But now, there is a preprint paper on hacking a digital kitchen scale to record data to a computer by D […]
This week Professor Christine Morrison at the Colorado School of Mines shared a picture on twitter in which she was using 2-liter plastic pop bottles to culture bacteria in a shaker instead of using glass 2L Erlenmeyer flasks which cost ~$100 each. For those who are skeptical, there are a lot of papers about growing […]
The Feeding Experimentation Device v.3 (FED3) is a smart pellet dispensing device originally designed for training mice on nose-poking tasks. Contributors to the product include Lex Kravitz, Sophi Kravitz, Bridget Matikainen-Ankney, Andrew Hardaway, Mohamed Ali, Katrina Nguyen, and Filipe Carvalho. FED3 is battery powered and designed for home cages. It collects information on nosepokes and […]
Charles-Anthony Fortin of photonetc writes in response to More DIY Opitcal Shutters, to tells us about Brandstrom Instruments. They sell self-restoring solenoids for as low as $250, and bare aluminum shutters for as low as $25.
One way to make microfluidic devices, is to use a milling machine. A paper by Ali Lashkaripour, Ryan Silva and Douglas Densmore compares three micromilling machines (tiny milling machines), evaluated their accuracy, and provides methods for evaluating the accuracy of your own miromilling machines. The only machine evaluated that is still being produced, is the […]