Raman spectroscopy is a technique in which light from a laser interacts with a sample to shift the laser wavelength. Recording the shifts with a spectrometer gives information about the sample. We’ve covered general cheap spectroscopy more than once here. OpenRAMAN is a project to assemble a Raman spectroscopy setup using about $3000 in (mostly […]
Author: LabOnTheCheap
An open source pick-and-place machine for $500
Pick-and-place machines are used to quickly and precisely place electronic components onto printed circuit boards. The open source IndexPnP with software powered by OpenPnP is a new cheap DIY pick-and-place machine. Commercial options cost thousands to tens of thousands of dollars. There are several open source designs already out there, a portion of which are […]
DMCdrive: a $10 micro-drive system for electrophysiology & optogenetics
In the field of neuroscience, micro-drive systems are used to position electrodes in order to make electrophysiology recordings. The DMCdrive is an open-source multi-tetrode for electrophysiology that costs ~$10 per micro-drive. It includes an optical fiber for optogenetic experiments and is demonstrated on freely moving mice. The device is presented in a paper on the […]
3D Print a Stethoscope
Here at Lab On The Cheap HQ we’ve received a few requests to look into ways that people might easily and cheaply transmit audio from a stethoscope over their phone to a medical practitioner they are teleconferencing with. While we are looking into the best solutions for that problem, we’ve noticed a lot of methods […]
Hack a kitchen scale for lab use for just $20
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 […]