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Appropriate Technology Technical Notes describe simple, small-scale technologies aimed at improving people's access to food, water, and shelter. Each document introduces and explains the general concept behind the technological solution, some even include instructions of how to construct your own.

 

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  1. Recurso clave 1/1/2001 Often the biggest challenge faced by a tropical farmer is not in the production of a crop but rather in the preservation of the crop. Farmers may want to preserve a crop for future consumption or for sale at a time when the market will offer a higher price. Using a solar dehydrator is a simple,...
  2. 1/1/2001 This simple device provides a method of manually producing bales of hay. Small-scale farmers may be interested in this technology because hay is both easier to store and easier to transport when it has been baled. Also, baled hay retains a higher nutrient content than hay that has been cut and...
  3. Recurso clave
    1/1/2001 Los servicios inadecuados de agua potable y saneamiento resultan en un estimado de 4 mil millones de casos de diarrea y 2.2 millones de muertes cada año (OMS/UNICEF 2000). En áreas donde no hay acceso a agua potable, el tratamiento del agua en los hogares puede contribuir de manera significativa...
  4. 1/1/2002 A composting toilet is any system that converts human waste into compost through the natural breakdown of organic matter. The photo above shows a composting toilet from the late 1800’s. Composting toilets provide a sanitary method to recycle human waste while conserving water and protecting the...
  5. 1/1/2003 Rope can be made from cord or string or even discarded plastic bags using a simple spindle to twist the materials together.
  6. 1/1/2006 El Nivel A es una herramienta sencilla pero exacta para medir y construir curvas de nivel en una ladera o pendiente. Es útil para el establecimiento básico de sistemas agrícolas en laderas, tales como los sistemas S.A.L.T. (Tecnología de Pendientes en Tierras Agrícolas), así como también para...
  7. 1/1/2010 The purpose of this document is to show several water pump designs constructed from PVC pipe, explain how to manufacture them, and discuss pump performance and how to improve on these designs. What’s Inside: Pump Design Manufacturing Process Pump Performance Appendix
  8. 1/1/2010 This treadle grindstone can spin a 6” abrasive wheel (of the type used on electric tool grinders) at up to 3000 rpm by means of a single treadle operated by the person using the grinder. Although rotational speed is similar to electric grinders, power is lower therefore short or light grinding...
  9. 1/1/2000 Briquettes made from materials that cost little or no money to obtain, such as old newspaper or unutilized plant waste, can be a cost-effective alternate fuel to charcoal or firewood. This could alleviate the harsh pressures put on many forests for providing enough fuel energy to meet people’s...
  10. 1/1/2002 This simple forage cutter provides a mechanism to chop tough grasses or other forages to make them more palatable and digestible for livestock. This results in more efficient food conversion for animals and reduced wastage. It can also be used to chop materials for compost, silage, vermiculture,...
  11. 1/1/2002 Seed storage is often a problem in the tropics. However, if seeds can be properly dried, they will remain viable for a longer period of time. The seed drying cabinet described here can help improve the viability of seeds in storage. What's Inside: Introduction Description Diagram Observations
  12. 1/1/2003 Although this document will tell you how to build a particular incubator that I have used for several years, the ideas presented here should assist in building an incubator of any capacity. The orientation here is toward solving the problems in building a kerosene fired incubator in general....
  13. Recurso clave
    17/5/2018 Muchas plantas consideradas invaluables para el pequeño productor ofrecen alimento nutritivo para la familia, forraje para los animales o madera para la construcción. ¡De manera notable, el bambú ofrece todas estas tres ventajas en una sola planta perenne! Esta Nota Técnica se centrará en cómo...
  14. 1/1/2002 This simple forage cutter provides a mechanism to chop tough grasses or other forages to make them more palatable and digestible for livestock. This results in more efficient food conversion for animals and reduced wastage. It can also be used to chop materials for compost, silage, vermiculture,...

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