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Camp Power Calc helps you figure out how big a battery, solar panel, and inverter you actually need for off-grid camping and van life. It goes through your real appliance list โ fridge, lights, phone, heater โ and shows the watt-hours, not just a single number. No login, runs entirely in the browser.
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CampPowerCalc's answer:
Because it's built by someone who actually camps off-grid. The appliance library comes from real gear lists (not marketing specs), the output shows watt-hours per device (not just a total), and you can tweak individual items to see how adding a 12V fridge or swapping LED bulbs changes your battery needs. No signup, no app download, no email capture โ open the page, run the numbers, done.
CampPowerCalc's answer:
Most camping power calculators give you a single "you need X Ah" number and stop there. CampPowerCalc breaks it down by appliance โ fridge, lights, phone charger, heater โ so you can see exactly what's drawing power, adjust the list, and understand the tradeoffs. It supports 6 languages, runs entirely in your browser with no server upload, and is built from real van life and RV camper feedback rather than generic assumptions.
CampPowerCalc's answer:
Van lifers, RV owners, overlanders, and car campers who are planning or upgrading their off-grid electrical setup. Also useful for pre-purchase research โ figuring out whether a 100Ah battery or 200W solar panel actually covers their real load before buying gear.
CampPowerCalc's answer:
I built it after spending weeks reading Reddit threads (r/vandwellers, r/overlanding) and forum posts where people kept asking the same question: "How big a battery do I really need?" Every answer was either a spreadsheet link or a vague "it depends." CampPowerCalc turns that spreadsheet into an interactive tool that walks through your actual appliance list and shows the math.
CampPowerCalc's answer:
Vanilla JavaScript with a static frontend hosted on Cloudflare Pages. No backend, no database, no user accounts โ all calculation happens locally in the browser. The site uses next-intl for 6-language support (English, German, French, Spanish, Japanese, Chinese) with hand-written native translations.
CampPowerCalc's answer:
Van conversion DIYers Overland vehicle builders RV campers planning boondocking trips Outdoor gear reviewers sizing power setups Pre-purchase researchers comparing battery/solar configurations
I've started using this as my main IDE for new projects when I'm trying things out. If it keeps getting better at the rate it has been, it'll be even better than coding locally.
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Managing reactive state and dependent computations in JavaScript can get complex, especially when combining asynchronous and synchronous data. RS-X is a library that allows you to bind expressions to plain objects and makes the parts of the model used by those expressions fully reactive. Dependent computations automatically update when the underlying data changes. RS-X is framework-agnostic. While it can drive UI... - Source: Hacker News / 6 months ago
I like htmx, LiveView, React and Solid. They are great at different points, so I try to combine them in Solv (Stateless Offline-capable LiveView) and write a prototype to show the benefits. Solv's main idea is that stateless servers keep client's state in a volatile cache. It enables server components that are also interactive, which is best of both worlds between LiveView and htmx. Then fine-grained reactivity is... - Source: Hacker News / 9 months ago
I like htmx, LiveView, React and Solid. They are great at different points, and this is a prototype trying to combine them. Solv's main idea is that stateless servers keep client's state in a volatile cache. It enables server components that are also interactive, which is best of both worlds between LiveView and htmx. Then fine-grained reactivity is added to achieve efficient DOM updates + minimal payload size.... - Source: Hacker News / 9 months ago
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CodeSandbox - Online playground for React
Size My Solar - Free off-grid & DIY solar sizing calculator. Size your battery bank, solar array, charge controller, and inverter from your loads, then compare curated, ranked solar products with real reviews. Works offline.
replit - Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages โ without spending a second on setup.
energycalculator.blog - Easily calculate energy usage, wattage, solar load, and power consumption with our free energy and solar calculators. Convert volts, amps, and watts accurately to optimize efficiency and manage your electricity better. ๐โก
CodePen - A front end web development playground.
CalculateOnline.org - Free online Solar Calculator
