Notas sobre diy

Notas sobre diy, impressão 3d, electrónica opensource, ...

Notas mais antigas estão arquivadas.

The Polyfloss Technology

"The Polyfloss Factory develops bespoke machines that turn plastic waste into Polyfloss. Polyfloss is a floss-like (fiber) plastic material made by carefully heating and spinning waste thermoplastics in a rotating oven, a process similar to cotton-candy production. Polyfloss specifically targets small format waste plastic, such as bottles, packaging materials, and medicine containers.

The Polyfloss machines are small and transportable and can be heated with readily available propane or natural gas and operated by two people with basic training. This makes the machines deployable to hard-to-access locations where traditional plastic recycling processes are not appropriate because of complexity, costs and dependence on supply chain."

The Rostock mini is a delta 3D printer

"The Rostock mini is a delta 3D printer based on the modified design of the original Rostock created by Johann. The printer is designed to have a smaller build volume allowing for a smaller, more compact, portable, and desktop friendly version of the delta RepRap design. Using OpenSCAD, the parametric nature of the design files allows for print surfaces to be configured that range from as small as the default 152x152 mm (6x6 inches) all the way to 300x300 mm (12x12 inches) or more. Further, construction parameters such as the length of the drive belts, diagonal rods, and a laser cuttable frame as well as the firmware parameters such as diagonal rod length and delta radius are all automatically calculated based on the size of the specified print surface."

Bricoleur Clay Extruder, Open Source

This is an open-source clay extruding print head that can be used on numerous 3d printers.

Rubber Made From Milk - Casein Bioplastic

Check the video:


MATERIABILITY is about making.

3D Printing Bioplastics

"The recipes of bioplastics are simple and in general consist of three to five renewable biomass sources. A mixture is made of biopolymers, bio-plasticizers, and bio-additives. Biopolymers considered can be starch, gelatine, or agar agar. As bio-plasticizers usually glycerol or sorbitol are used. Further additives can be biowaste, such as coffee grounds or fruit skins, clay, vinegar, spirulina, sugar, soap, burlap, or hemp. Most bioplastics are water based and need to cure to reach a solidification state. Considering the above mentioned ingredients, a wide range of possible combinations and mixing ratios are conceivable. The goal is to incrementally and iteratively analyze mixtures and their ratios for plausible three dimensional deposition performances. Factors for evaluation are general material properties, such as strength, shrinkage, durability, cracking, color loss, curing time, pot life, additive energy sources (heating, cooling, and UV), viscosity, stickiness, workability, and processability. Further, costs for ingredients and preparation and the segregation between animal- and plant-based biomaterials will be considered."

Syringe Pump Assembly & Testing Workflow

Part of the LulzBot Bio:


Info and pics.

Electricity generation from digitally printed cyanobacteria

"Microbial biophotovoltaic cells exploit the ability of cyanobacteria and microalgae to convert light energy into electrical current using water as the source of electrons. Such bioelectrochemical systems have a clear advantage over more conventional microbial fuel cells which require the input of organic carbon for microbial growth. However, innovative approaches are needed to address scale-up issues associated with the fabrication of the inorganic (electrodes) and biological (microbe) parts of the biophotovoltaic device. Here we demonstrate the feasibility of using a simple commercial inkjet printer to fabricate a thin-film paper-based biophotovoltaic cell consisting of a layer of cyanobacterial cells on top of a carbon nanotube conducting surface. We show that these printed cyanobacteria are capable of generating a sustained electrical current both in the dark (as a ‘solar bio-battery’) and in response to light (as a ‘bio-solar-panel’) with potential applications in low-power devices."

Printable BPV: Electrogenesis wallpaper

Bioelectricity and electrogenesis: "Bioelectricity here means the flow of electrons that occurs as a result of biological reactions occurring in plants and algae. Such electrical flows can be considered a form of renewable energy as they are ultimately driven by solar energy. The process of electron production is called electrogenesis: Photopigments within each cell capture and absorb photons of light to generate high-energy electrons. During photosynthesis virtually every photon absorbed by chlorophyll pigments within the cell can eject one electron; this is the mechanism behind the genesis of electrons (which are able at low efficiency to escape from the cells and be harvested in the form of an electron current). Different types of biological material have been shown to be able to produce an electrical current in response to light. They include plants such as moss but also simpler chemical systems composed of isolated purified photosystems (macromolecules responsible for photosynthetic reactions). However, algae are particularly advantageous due to their physiological simplicity and the fact that live cells are able to rebuild photosynthetic complexes when they become damaged and so maintain long-lived electron flow (Komenda, Michoux, Nixon 2012)."

Criado/Created: 2018

Última actualização/Last updated: 01-08-2021 [18:23]

Voltar à página inicial.

GNU/Emacs Creative Commons License

(c) Tiago Charters de Azevedo