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My idea is to build a small solar panel using 24 power transistors in a TO3 package.
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SOLAR BJT charger SEE THE VIDEO

gfresourcesvideogfresources.video

No one expects the bifocal prism.
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Prism Surprise

joseph-eoffJoseph Eoff

Some home computers used to have RF video output. The P2 could bring that back with ATSC HDTV output.
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Digital TV signal from Parallax P2 microcontroller

real-solar-carsReal Solar Cars

Phototransistor → particle detector. Red laser glows particles in 3d printed enclosed chamber in turn calculating particulate matter
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G1 : A Sensor to measure particulate matter

bhuvan-bagweBhuvan Bagwe

6 Unbuffered CMOS inverters are connected in unacceptable ways to create a stable sinusoidal oscillator
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Digital Inverter Abuse for Sinusoidal Oscillator

adrian-freedAdrian Freed

Quite possibly an over-engineered clock
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A Simple Clock Blown Out of Proportion

coffeeislifeCoffeeIsLife

A dual-screen, ESP32 powered ereader: Own your device, own your books
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Diptyx E-reader

martijnMartijn

Your pictures don’t just sit there anymore — they speak. Add short captions to your family album, and turn them into natural voice
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TinyTTS — The Neural Module That Makes Photos Talk

paulPaul

Surprisingly good 1 bit PCM audio at an absurdly low samplerate. 1 Bit audio not at millions, but as little as 15,926 samples a second!
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Abusing a 6522 VIA serial port for PCM Audio

normall-userNormalL User

Featuring a ZnSe beam splitter and a pyroelectric detector, the FTIR spectrometer ensures precise molecular analysis with reliability
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JASPER : FTIR

tony-francisTony Francis

Finally! A simple method to get time and date from the internet corrected for time zone and daylight savings or standard time.
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Free, highly accurate, time and date from Internet

nodemcu12ecanadanodemcu12ecanada

Reversible, no extra switch, multiple frequencies delay module for classic British cars.
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Classic car intermittent wiper motor controller

frederic-lFrederic L

The 8-key macro pad with LCD isn’t just another macro pad— it's a visual, scriptable, dynamic control deck you build and own.
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8-Key MacroPad with 3.5 inch LCD

yang-shuYANG SHU

Mesh networking over WiFi and LoRa radios to support a Disruption Tolerant Network
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Wakan μDTN

hsingai-tigris-altaicaHsingai Tigris Altaica

LoRa is a low-power wide-area network (LPWAN) wireless standard developed by Semtech. Its name "LoRa" stands for Long Range Radio.
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Usage Tutorial of Ra-01SCH-P

ai-thinkerAi-Thinker

An operating system based on Java
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Novel JavaOS

x-wangX. Wang