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Sizing the solar array for you off-grid solar power

Toggle navigation rimstar . Sizing the solar array for you off-grid solar power system. Step 1. Work out your power needs: Step 2. Sizing battery bank: Step 3. Sizing solar array: Step 4. Wire sizing: NOTE: Clicking on any link in the body

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Homebuilt 30kV High Voltage Power Supply

If you prefer text over video he was kind enough to share a schematic and full write up at rimstar . The power supply can be configured for 1.2kV – 4.6kV or 4kV – 30kV

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Copenhagen solar cooker

The Copenhagen solar cooker is a very clever, lightweight, portable and quick to set up solar cooker invented by Sharon Clausson. It is much like a car sunshade solar cooker in that to adjust it you set the cooking pot down flat and then adjust the reflectors around it. Unlike the car sunshade, the Copenhagen is suitable for all sun angles, meaning all times of the year and day.

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Art''s hybrid solar oven

Art''s hybrid solar oven great for brewing coffee. It has a parabolic reflector on the bottom reflecting light up to the bottom of the cooking pot and a funnel reflector on top reflecting light down into the oven.

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RimstarOrg

An addiction to science, electronics, making stuff, understanding how things work, and passing it all on to you... My name is Steve and I''m a lifelong maker and amateur scientist and see no end in

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How to make a piezoelectric crystal speaker

When a voltage is applied across a piezoelectric crystal, the crystal expands and then contracts again. By connecting the crystal to the sound output of a device where a normal speaker would usually go, a radio''s output for example (see diagram below), then the device will supply a varying voltage and the crystal''s expansion and contraction will produce sounds waves.

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Crystal earphone/earpiece

Toggle navigation rimstar . Crystal earphone/earpiece. Crystal earpieces, or earphones, consist of a piezoelectric crystal attached to a diaphragm (see diagram below.) The fluctuating voltage from the crystal radio''s output is

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rimstar

What''s New February 25, 2023 Added a downloadable files for making zoetrope animations and a downloadable template for making a pinhole camera from poster board. February 21, 2023 Added a downloadable template for making the corona motor v2. November 24, 2022 Added details about Izzy, an artificial intelligence robot I''m working on and my

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Solar cooking

The Copenhagen solar cooker is a clever design that has the cooking pot sit flat while the reflectors are adjusted around it. Since the reflectors are flexible, you can get a fairly good amount of sunlight reflected to the pot whether the sun is low or high in the sky.

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Pinhole camera (DIY/homemade)

The diagram below shows why the image in the pinhole camera is upside down. The light rays can only travel through the small pinhole. If you follow the ray from the person''s head to the hole and then continue following it through the hole, you see that the ray strikes the bottom of the image inside the camera''s box.

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Science and Electronics Projects

Toggle navigation rimstar . Science and Electronics Projects. What''s New. October 28, 2024 : Added a new video about improvements to Izzy object selection and

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rimstar

Also, now introducing RSS support for rimstar ! Click the button above. August 26, 2010 Ontario''s microFIT program now paying $0.642/kWh for non-roof systems. August 15, 2010 DIY spiral hose type solar pool heater in Tuscany! August 14, 2010 More details about solar pool heating control and automation.

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Make a razor blade diode

To wire it up, put it in the same place where a regular germanium diode would go in your crystal radio or foxhole radio. The diagrams below are for the crystal radio I use most which is the same one as in the photos on this page. The pencil is

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How to make Rochelle salt piezoelectric crystal

Step 6. As shown in the photo below, get a second container and a coffee filter. Pour the hot solution in the container from the steps above, through the coffee filter into the second container.

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rimstar

What''s New February 25, 2023 Added a downloadable files for making zoetrope animations and a downloadable template for making a pinhole camera from poster board. February 21, 2023 Added a downloadable template for making the corona motor v2. November 24, 2022 Added details about Izzy, an artificial intelligence robot I''m working on and my changes to the darknet neural

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Homebuilt 30kV High Voltage Power Supply

If you prefer text over video he was kind enough to share a schematic and full write up at rimstar . The power supply can be configured for 1.2kV – 4.6kV or 4kV – 30kV at the output while

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rimstar

rimstar - Solar/wind, composting, non-conventional energy/propulsion. rimstar An addiction to science, renewable energy, building stuff, understanding how things work, and passing it all on to you. What''s New February 25, 2023 Added a downloadable files for making zoetrope animations and

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Crystal radio tips and tricks

Tip 1 - Use a long, straight antenna. A crystal radio''s antenna should be as long as possible. A car antenna won''t work. I''ve managed to get a wire around 12 feet/4 meters long to work, but I live near a few radio stations.

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Science and Electronics Projects

Toggle navigation rimstar . Science and Electronics Projects. What''s New. October 28, 2024 : Added a new video about improvements to Izzy object selection and making Izzy more compact. February 25, 2023 : Added a downloadable files for making zoetrope animations and a downloadable template for making a pinhole camera from poster board.

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Funky Looking Motor Is Powered By Static Electricity

[Steven Dufresne] of Rimstar is at it again with another very functional science experiment. This week he''s showing us how he made a large electrostatic motor, also known as a Corona Motor...

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20kV DC power supply (homemade/DIY) using flyback with built in

This is different than my 30kV high voltage power supply that used a flyback transformer without built in diodes and a Cockcroft-Walton voltage multiplier or tripler that contained the diodes (see photos below.) However, the multiplier does allow that one to get to 30kV. On the other hand, this commercially made multipler is hard to find, as it the flyback without built in diodes.

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Lifter/ionocraft experiments

The lifter is a typically triangular shaped, lightweight device capable of lifting its own weight. However, it cannot also lift the weight of its high voltage power supply that powers it.

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30kV DC Power Supply (homemade/DIY) using flyback and

IMPORTANT: It''s recommended that if you might have high power sparks then you should put around 250 kilohms of resistance with at least a 2 watt rating at the output to protect the power supply from the high current of the spark. A high power spark usually comes from a wide spark gap. I damaged transistor Q1 this way by forgetting to put this resistance.

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Arduino speech synthesizer using the Talkie library

I also used this Talkie library in my Arduino controlled skull for a Halloween project. That also included working a servo and the used of a proper microcontroller loop in the code. Follow the link for full details, including the code.

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Homemade/DIY amplifier for loud speaker

Toggle navigation rimstar . Homemade/DIY amplifier for loud speaker. This is a homemade amplifier that''s powered by a 9 volt battery, has an on-off switch and an audio tapered volume knob (potentiometer) for more natural volume control. It makes use of the LM386 amplifier chip, though I used the equivalent NTE823.

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Peltier effect cooling efficiency test

Toggle navigation rimstar . Peltier effect cooling efficiency test. A peltier module is a solid state device often used for doing cooling. Their found in some portable coolers for carrying food to the beach or in water dispensers like the one shown below.

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Piezoelectric effect

Toggle navigation rimstar . Piezoelectric effect. Making homemade piezoelectric crystals, testing crystal ignitor from a barbeque lighter, extracting piezoelectric disks from gift cards, buzzers and in general, playing with

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rimstar

rimstar sharing information that keeps the lights on. What''s New Archive: August 23, 2009: DIY installation of commercial solar pool heating system in Seattle. August 20, 2009: Modifying commercial Wimshurst machine - added replacement screw information. August 16, 2009:

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NGOs, Charities and Non-profits in Cameroon

Below is a list of Non-profits, Charities and NGOs working in Cameroon. You can browse all major, active Cameroon NGOs and view details of their work focus. Total Results = 85

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DIY multi-range gauss/millitesla meter

At a nominal Zero Gauss field strength, meter +ve input at the C3/R5 junction is ≈ 2.5V. VR1 sets the probe range Calibration Check Voltage at 4.5V (Equivalent to ≈ full scale) VR2 sets the Green/Red (N/S ) switching threshold for the LEDs.

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DIY laser communicator

Toggle navigation rimstar . DIY laser communicator. This is a relatively easy to make laser communicator which allows you to talk over a distance using a laser on one end and a solar cell on the other end, along with a few extra parts. The receiving end can instead be a photoresistor, photodiode or a number of other things but I use a solar

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About Rimstar org Cameroon

About Rimstar org Cameroon

As the photovoltaic (PV) industry continues to evolve, advancements in Rimstar org Cameroon have become critical to optimizing the utilization of renewable energy sources. From innovative battery technologies to intelligent energy management systems, these solutions are transforming the way we store and distribute solar-generated electricity.

About Rimstar org Cameroon video introduction

When you're looking for the latest and most efficient Rimstar org Cameroon for your PV project, our website offers a comprehensive selection of cutting-edge products designed to meet your specific requirements. Whether you're a renewable energy developer, utility company, or commercial enterprise looking to reduce your carbon footprint, we have the solutions to help you harness the full potential of solar energy.

By interacting with our online customer service, you'll gain a deep understanding of the various Rimstar org Cameroon featured in our extensive catalog, such as high-efficiency storage batteries and intelligent energy management systems, and how they work together to provide a stable and reliable power supply for your PV projects.

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