Lab Instruments

I've built, or upgraded, several devices for science labs.

Peristaltic Pump

Ryan Hoover, designed, built, and programmed the original system (4 major hardware redesigns!). I upgraded the control system for better real-time motor control, scaling to more or fewer motors, more-reliable cloud communication, browser control on the LAN, simpler programming, and integration with other lab IOT.

<pic pump external> <pic pump internal>

Project on gitlab. Contact either of us with questions.

Data Capture from Spectrophotometer

A bio scientist was doing about 12 optical-density measures, 6 times a day. A colleague and I thought we could improve recording accuracy, and save time with a capture-device that talks to an older instrument. It uploads each measurement to a cloud DB, with real-time graphing.

It's a Raspberry Pi, with RS232 adapter, and simple cloud service. Project on gitlab. Contact me to discuss interfacing with other devices. The better solution is an in-shaker biomass detector!

Minus 80 Freezer Alarm

Everyone's favorite for some reason. Monitors and reports (txt/email) on the temperature of a -80C freezer: battery backup for power outages, and cell-data for network outages. Also monitors room temp/humidity. Uses a cloud IOT to send txt or email to the facilities/experimenter if there is a problem. Intended to support smaller/simpler sensors on other fridges/incubators in the lab.

Not in a box yet! A Pi, LTE board, etc. Project on gitlab. Commercial versions are about $300 with subscription. This one gives more control to the owner.