Jim Haseloff
@jimhaseloff.bsky.social
Plant biologist at the University of Cambridge. Mashing up low-cost DIY tools for bioinstrumentation (biomaker.org) and engineering plant biology (openplant.org)
Recipe for PPM (Plant Preservative Mixture) from the patent WO 1996/038542. Simplifies sterile plant tissue culture - especially if you don't have access to a research-grade facility. Great invention from Assaf Guri and Kishor Patel at Plant Cell Technology plantcelltechnology.com/blogs/blog/t...
November 4, 2025 at 5:46 PM
Recipe for PPM (Plant Preservative Mixture) from the patent WO 1996/038542. Simplifies sterile plant tissue culture - especially if you don't have access to a research-grade facility. Great invention from Assaf Guri and Kishor Patel at Plant Cell Technology plantcelltechnology.com/blogs/blog/t...
3D printed rotating tube mixer for incubating samples. Build instructions at: www.printables.com/model/52572-...
June 7, 2025 at 5:07 PM
3D printed rotating tube mixer for incubating samples. Build instructions at: www.printables.com/model/52572-...
...where a powerful toy slingshot can be used to mount the LoRa node in a tree for better line-of-sight communications with other devices.
www.instructables.com/Meshtastic-S...
www.instructables.com/Meshtastic-S...
April 6, 2025 at 2:37 PM
...where a powerful toy slingshot can be used to mount the LoRa node in a tree for better line-of-sight communications with other devices.
www.instructables.com/Meshtastic-S...
www.instructables.com/Meshtastic-S...
Clever description of how to convert an inexpensive solar anchor buoy light into an extremely durable and waterproof solar powered Meshtastic node e.g. for sharing LoRa sensor data in a field setting. www.instructables.com/Meshtastic-S...
April 6, 2025 at 2:23 PM
Clever description of how to convert an inexpensive solar anchor buoy light into an extremely durable and waterproof solar powered Meshtastic node e.g. for sharing LoRa sensor data in a field setting. www.instructables.com/Meshtastic-S...
chinnadevarapu.bsky.social has updated his tiny, low cost Pocket Spectrometer design that uses an M5StickC microcontroller and AS7341 spectral sensor - simplified hardware connections and software improvements. Nice job! Details at: github.com/scientistnob...
March 9, 2025 at 6:47 PM
chinnadevarapu.bsky.social has updated his tiny, low cost Pocket Spectrometer design that uses an M5StickC microcontroller and AS7341 spectral sensor - simplified hardware connections and software improvements. Nice job! Details at: github.com/scientistnob...
The mini capsules can be opened and used for microscopic observation as well.
doi.org/10.1007/978-...
doi.org/10.1007/978-...
March 4, 2025 at 2:26 PM
The mini capsules can be opened and used for microscopic observation as well.
doi.org/10.1007/978-...
doi.org/10.1007/978-...
Chopping tubes and adding slits to allow the halves to fit together...
doi.org/10.1007/978-...
doi.org/10.1007/978-...
March 4, 2025 at 2:25 PM
Chopping tubes and adding slits to allow the halves to fit together...
doi.org/10.1007/978-...
doi.org/10.1007/978-...
Handy little trick from Jose Ignacio Laines-Hidalgo, Angela F. Ku-Gonzalez, and Felipe A. Vazquez-Flota published in doi.org/10.1007/978-...
Making DIY small sealed capsules from Eppendorf tubes for plant histology.
Making DIY small sealed capsules from Eppendorf tubes for plant histology.
March 4, 2025 at 2:24 PM
Handy little trick from Jose Ignacio Laines-Hidalgo, Angela F. Ku-Gonzalez, and Felipe A. Vazquez-Flota published in doi.org/10.1007/978-...
Making DIY small sealed capsules from Eppendorf tubes for plant histology.
Making DIY small sealed capsules from Eppendorf tubes for plant histology.
3D print files for a collection of parts that allow micro servos to be plugged into Fischertechnik construction systems. Good for prototyping programmable mechanical devices...
www.thingiverse.com/thing:2807112
www.thingiverse.com/thing:2807112
January 2, 2025 at 6:23 PM
3D print files for a collection of parts that allow micro servos to be plugged into Fischertechnik construction systems. Good for prototyping programmable mechanical devices...
www.thingiverse.com/thing:2807112
www.thingiverse.com/thing:2807112
The described procedure for making Lenticules is relatively simple. Cells are mixed with a solution containing a high concentration of trehalose, BSA and carboxymethyl cellulose as caking agents, saline (with optional food dye), and dried on parafilm before storage over desiccant.
December 29, 2024 at 12:20 PM
The described procedure for making Lenticules is relatively simple. Cells are mixed with a solution containing a high concentration of trehalose, BSA and carboxymethyl cellulose as caking agents, saline (with optional food dye), and dried on parafilm before storage over desiccant.
However, details for preparation of Lenticules appears in a published patent: Storage of microorganisms, cells and tissue (WO 01/05941) See at: link.lens.org/aPFhU0Bjyli
December 29, 2024 at 12:14 PM
However, details for preparation of Lenticules appears in a published patent: Storage of microorganisms, cells and tissue (WO 01/05941) See at: link.lens.org/aPFhU0Bjyli
Lenticules were described in doi: 10.1046/j.1365-2672.1998.00611.x. by Codd et al. - but composition of the critical component for storage, the "lenticulating fluid (Codds Medium)" seems missing in this and a subsequent paper (dot: 10.1046/j.1365-2672.2001.01432.x)...
December 29, 2024 at 12:08 PM
Lenticules were described in doi: 10.1046/j.1365-2672.1998.00611.x. by Codd et al. - but composition of the critical component for storage, the "lenticulating fluid (Codds Medium)" seems missing in this and a subsequent paper (dot: 10.1046/j.1365-2672.2001.01432.x)...
Have always been interested in Lenticules and Vitroids (www.sigmaaldrich.com/deepweb/asse...) - as ways of storing/distributing microbial cells as stable, dry pellets, which could be widely useful for resource sharing. Lenticules originated at Public Health England, and a protocol is available...
December 29, 2024 at 11:55 AM
Have always been interested in Lenticules and Vitroids (www.sigmaaldrich.com/deepweb/asse...) - as ways of storing/distributing microbial cells as stable, dry pellets, which could be widely useful for resource sharing. Lenticules originated at Public Health England, and a protocol is available...
Wild collection of heirloom and genetically variant seeds available from Tomato Revolution (www.tomatorevolution.co.uk) ready for next summer.
December 27, 2024 at 12:13 PM
Wild collection of heirloom and genetically variant seeds available from Tomato Revolution (www.tomatorevolution.co.uk) ready for next summer.
Downloadable reference card for focus bracketing, on a site full of examples and advice about Olympus macro photography systems from Chris McGinniss
www.chrismcginnis.com/gear
www.chrismcginnis.com/gear
December 24, 2024 at 7:10 AM
Downloadable reference card for focus bracketing, on a site full of examples and advice about Olympus macro photography systems from Chris McGinniss
www.chrismcginnis.com/gear
www.chrismcginnis.com/gear
Here's an archived free copy of CL Strong's 1960 book with collected Amateur Scientist columns from Scientific American. Inspiration for citizen science. Forward by Vannevar Bush...
archive.org/details/Proj...
archive.org/details/Proj...
December 24, 2024 at 6:26 AM
Here's an archived free copy of CL Strong's 1960 book with collected Amateur Scientist columns from Scientific American. Inspiration for citizen science. Forward by Vannevar Bush...
archive.org/details/Proj...
archive.org/details/Proj...
Online portfolio of bryophyte plant images from across the globe - excellent macrophotography from Des Callaghan, captures some of the morphological diversity of this clade
bryophytes.myportfolio.com/work
bryophytes.myportfolio.com/work
December 24, 2024 at 6:13 AM
Online portfolio of bryophyte plant images from across the globe - excellent macrophotography from Des Callaghan, captures some of the morphological diversity of this clade
bryophytes.myportfolio.com/work
bryophytes.myportfolio.com/work
Fusion 360 files for 3D printing a good-looking Stevenson Screen (en.wikipedia.org/wiki/Stevens...) to house outdoor sensors and electronics, some OpenGreenEnergy. Nice design with other potential applications...
hackaday.io/project/1650...
hackaday.io/project/1650...
December 24, 2024 at 6:00 AM
Fusion 360 files for 3D printing a good-looking Stevenson Screen (en.wikipedia.org/wiki/Stevens...) to house outdoor sensors and electronics, some OpenGreenEnergy. Nice design with other potential applications...
hackaday.io/project/1650...
hackaday.io/project/1650...
Successive updates/instructions for building solar-powered environmental sensing stations with custom electronics, wireless communications and 3D printed outdoor housing.
hackaday.io/project/1650... and hackaday.io/project/1820...
hackaday.io/project/1650... and hackaday.io/project/1820...
December 24, 2024 at 5:55 AM
Successive updates/instructions for building solar-powered environmental sensing stations with custom electronics, wireless communications and 3D printed outdoor housing.
hackaday.io/project/1650... and hackaday.io/project/1820...
hackaday.io/project/1650... and hackaday.io/project/1820...
Neatly designed $300 EDGE electrophoresis unit with integrated power supply and visualisation system from Edvotek - looks good for education and DIY lab - and design looks extendable
www.edvotek.com/500
www.edvotek.com/500
December 23, 2024 at 10:22 PM
Neatly designed $300 EDGE electrophoresis unit with integrated power supply and visualisation system from Edvotek - looks good for education and DIY lab - and design looks extendable
www.edvotek.com/500
www.edvotek.com/500
Collection of tips and techniques for handling delicate bryophyte plants for microscopy, including sectioning, KOH clearing, slide mounting, etc. from the Britsh Bryological Society
www.britishbryologicalsociety.org.uk/learning/tip...
www.britishbryologicalsociety.org.uk/learning/tip...
December 23, 2024 at 9:15 PM
Collection of tips and techniques for handling delicate bryophyte plants for microscopy, including sectioning, KOH clearing, slide mounting, etc. from the Britsh Bryological Society
www.britishbryologicalsociety.org.uk/learning/tip...
www.britishbryologicalsociety.org.uk/learning/tip...
NIH 3D - large repository of 3D models for biomedical components (look under "Discover" and "Devices and Hardware" for lots of adapters, tube racks, etc for the lab) along with anatomical and molecular shapes...
3d.nih.gov
3d.nih.gov
December 23, 2024 at 6:18 PM
NIH 3D - large repository of 3D models for biomedical components (look under "Discover" and "Devices and Hardware" for lots of adapters, tube racks, etc for the lab) along with anatomical and molecular shapes...
3d.nih.gov
3d.nih.gov
Tips for assembly of hybrid microscopy vessels - with embedded filters, fibre optics, coverslips, polystyrene windows, etc. - using colorFabb_XT co-polyester and Bio-PSA 7-4301 silicone adhesive for glue
pubs.aip.org/aip/bmf/arti...
pubs.aip.org/aip/bmf/arti...
December 23, 2024 at 6:05 PM
Tips for assembly of hybrid microscopy vessels - with embedded filters, fibre optics, coverslips, polystyrene windows, etc. - using colorFabb_XT co-polyester and Bio-PSA 7-4301 silicone adhesive for glue
pubs.aip.org/aip/bmf/arti...
pubs.aip.org/aip/bmf/arti...
Useful set of guides for printing threads or embedding threaded inserts in 3D printed parts.
formlabs.com/uk/blog/addi...
formlabs.com/uk/blog/addi...
December 23, 2024 at 6:01 PM
Useful set of guides for printing threads or embedding threaded inserts in 3D printed parts.
formlabs.com/uk/blog/addi...
formlabs.com/uk/blog/addi...
PlanktoScope: an open-source platform from studying plankton with high-throughput liquid sampling and quantitative imaging capabilities at a low cost (with clever reusable design for macro/micro imaging with HQ RasPi camera and twin M12 lenses)
github.com/PlanktoScope... and www.fairscope.com
github.com/PlanktoScope... and www.fairscope.com
December 21, 2024 at 6:34 PM
PlanktoScope: an open-source platform from studying plankton with high-throughput liquid sampling and quantitative imaging capabilities at a low cost (with clever reusable design for macro/micro imaging with HQ RasPi camera and twin M12 lenses)
github.com/PlanktoScope... and www.fairscope.com
github.com/PlanktoScope... and www.fairscope.com