{"id":549,"date":"2026-03-16T01:12:31","date_gmt":"2026-03-16T01:12:31","guid":{"rendered":"https:\/\/wordpress.sciencepicker.com\/?p=549"},"modified":"2026-03-16T01:12:31","modified_gmt":"2026-03-16T01:12:31","slug":"10-homebuilt-tech-tools-for-the-developing-world","status":"publish","type":"post","link":"https:\/\/www.science-pickers.com\/10-homebuilt-tech-tools-for-the-developing-world\/","title":{"rendered":"10 homebuilt tech tools for the developing world"},"content":{"rendered":"\n<p><strong>World\u2019s\nalmost 1 billion population lives on less than $1 a day. So, in this article, we\nhave gathered some homebuilt products that can be put together using\neasy-to-find resources and a limited understanding of science and engineering. <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Zeer Pot Fridge<\/strong><\/li><\/ul>\n\n\n\n<p>A <strong>refrigerator<\/strong>\nconsisting of one earthenware pot settled inside a second larger pot, with a\nlayer of sand in between. Villagers, first, use clay and water to make molds\nand they dry them in the sun. After this, they press fresh clay around the\nmolds. After adding a base and rim to each mold, they dry the pots in. Now the\npots get ready for assembly after cooling them.<\/p>\n\n\n\n<p>A layer\nof sand is placed at the bottom of the larger pot. The smaller pots are also on\nthis layer of sand. At last, sand fills the space between the two. To make the\npot functional, the sand is made wet, the <strong>smaller pots<\/strong> with vegetables\nare filled and then a wet rag over the whole thing is placed.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Solar Cooker<\/strong><\/li><\/ul>\n\n\n\n<p>Sturdier materials such as wood instead\nof cardboard and foam instead of newspaper is used in its design. Four\nfoil-coated panels are also added in order to concentrate the sun&#8217;s energy. Want\nto know the result of this design? &nbsp;The cooking\ntemperature of 350 to 400 degrees Fahrenheit, hot enough to roast a whole\nchicken!<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Composting Toilet<\/strong><\/li><\/ul>\n\n\n\n<p>In most rural communities, sanitary waste disposal is no laughing matter. According to the WHO, nearly 2 billion people live without good sanitation facilities and services. This results in bacteria and\u00a0viruses from human waste\u00a0ending up in the water supply, leading to a number of diseases. Start using this bioreactor system that converts sanitary waste to biogas, which is then burned and superheated by a heat exchanger to sterilize the treated effluent.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Flexi Hand Water Pump<\/strong><\/li><\/ul>\n\n\n\n<p>The <strong>Flexi hand pump<\/strong> uses common\nmaterials PVC pipes, thread adapters, galvanized iron pipe and two glass\nmarbles. The <strong>Flexi hand water pump<\/strong> can be assembled quickly and easily. Want\nto know how does it work? Read here! A PVC pipe fits into a second pipe and at\nthe bottom of each pipe, a glass marble is attached. The inner pipe joins a\nT-shaped handle that forms an outlet. The pumping action raises and lowers the\ninner pipe which moves within the stationary outer pipe. An upward movement\ncreates suction action, drawing water into the cylinder. A downward movement\ndisplaces water from the cylinder, pumping it out at the top of the hand pump.\nThe person operating the hand pump can pump about 4 to 8 gallons of water per\nminute.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Rain Barrel<\/strong><strong><\/strong><\/li><\/ul>\n\n\n\n<p><strong>Rain\nBarrel<\/strong> is a\nsimple matter of reconstructing the container so it can collect water. The\ndesign involves drilling two holes and then cutting a hole in the top of the\nbarrel to receive a downspout. After this, a window screen is attached over\nthis opening to catch debris and mosquitoes. After this, you have a perfectly\nserviceable rain barrel and a ready supply of water for various purposes.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Compost Bin<\/strong><\/li><\/ul>\n\n\n\n<p>Like the <strong>rainwater harvesting system<\/strong>,\u00a0composting\u00a0has also been popular at small farms for decades. The process to build a compost bin involves converting organic debris vegetation, food scraps, and manure into rich, all-natural fertilizer. Farmers prefer to use high quality compost as it enables the soil to hold more water and provides more nutrients to crops. This furthermore increases the productivity of their land and results in higher revenues.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Solar Air Conditioner<\/strong><strong><\/strong><\/li><\/ul>\n\n\n\n<p>It is easy to build a\u00a0<strong>homemade air conditioner\u00a0<\/strong>using a cooling fan from an old PC, wooden craft sticks, an absorbent cloth, and a small, 2-watt solar panel to generate power. Firstly, start by creating a frame out of the craft sticks, with the fan supported at the top so it blows down and two decks below the fan to support strips cut from the fabric. Everything should be stuck so the structure stands upright and sturdy. Then you connect the wires from the fan to the solar panel, wet the fabric and let the cooling begin.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Bicycle-powered Phone Battery Charger<\/strong><strong><\/strong><\/li><\/ul>\n\n\n\n<p>A very little amount of know-how is needed to build your own\u00a0<strong>bicycle-powered phone charger<\/strong>. To build this, you&#8217;ll need some basic electronics such as circuit board, rectifier, capacitor, headlight generator, and voltage regulator. First of all, you need to attach the generator to either the front or back wheel of your bicycle. Now cut the cord on your phone charger to expose the positive and negative cables. Now attach the electronic components on the circuit board and establish everything together. At last, cover all the electrical components with a tape and mount the circuit board just under the seat of your bicycle. <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Solar-powered Laptop Battery Charger<\/strong><strong><\/strong><\/li><\/ul>\n\n\n\n<p>To\nbuild a <strong>solar-powered laptop battery charger<\/strong>, you will need to collect\nthe core components of the charger: the solar panel, 12-volt battery packs, a\n12-volt car power outlet and an old suitcase larger than the laptop. Now attach\nthe <strong>solar panel<\/strong>, the <strong>solar charge controller<\/strong>, and the power\nadapter to the outside of the case. You will need to drill into the case frame\nto accommodate attachment screws and to create holes for wiring purpose. Now disassemble\neach battery pack and again configure 10 cells so that they form long flat\npacks that fit easily in the case. Attach leads to the flat packs and link all\nof them together. Then attach the leads to the positive and negative terminals\non the <strong>solar controller<\/strong>. You can find detailed instructions.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Cantenna<\/strong><\/li><\/ul>\n\n\n\n<p>Building a <strong>cantenna<\/strong> at home is easy. Start by cutting a piece of copper wire about 1.25 inches long and solder the wire to the N-type connector. Let it cool; meanwhile, drill a hole in the tin large enough to hold the connector. After this, pass the chassis connector through the hole. Bolt the chassis connector to the can and then remove the factory antenna from the USB\u00a0Wi-Fi\u00a0adapter. After this, screw the smaller end of the pigtail cable into the adapter. At last, insert the USB adapter into your PC or laptop, mount the can outside, point it to a likely signal and boom!! You have got the wireless Internet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/wordpress.sciencepicker.com\/wp-content\/uploads\/sites\/136\/solar-pannel.jpg\" alt=\"\" class=\"wp-image-551\" srcset=\"https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel.jpg 960w, https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel-300x169.jpg 300w, https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel-768x432.jpg 768w, https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel-450x253.jpg 450w, https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel-30x17.jpg 30w, https:\/\/www.science-pickers.com\/wp-content\/blogs.dir\/1\/uploads\/sites\/182\/solar-pannel-780x439.jpg 780w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption>Source: Pixabay<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>World\u2019s almost 1 billion population lives on less than $1 a day. So, in this article, we have gathered some homebuilt products that can be put together using easy-to-find resources and a limited understanding of science and engineering. Zeer Pot Fridge A refrigerator consisting of one earthenware pot settled inside a second larger pot, with [&hellip;]<\/p>\n","protected":false},"author":60,"featured_media":814,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"footnotes":""},"categories":[9],"tags":[],"class_list":["post-549","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chemistry-and-technology"],"_links":{"self":[{"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/posts\/549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/users\/60"}],"replies":[{"embeddable":true,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/comments?post=549"}],"version-history":[{"count":3,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/posts\/549\/revisions"}],"predecessor-version":[{"id":815,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/posts\/549\/revisions\/815"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/media\/814"}],"wp:attachment":[{"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/media?parent=549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/categories?post=549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.science-pickers.com\/wp-json\/wp\/v2\/tags?post=549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}