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A DIY E-bike Conversion on the Cheap

Cars That Think

It uses an "outrunner" motor designed for electric skateboards. motor designed for electric skateboards for $88 and fashioned a mount for it out of a few pieces of scrap aluminum. Being an open-source design no doubt keeps the price of this hardware down: The controller I bought set me back a mere $85. So I bought an outrunner.

DIY 145
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A DIY E-bike Conversion on the Cheap

Cars That Think

It uses an "outrunner" motor designed for electric skateboards. motor designed for electric skateboards for $88 and fashioned a mount for it out of a few pieces of scrap aluminum. Being an open-source design no doubt keeps the price of this hardware down: The controller I bought set me back a mere $85. So I bought an outrunner.

DIY 98
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Can This DIY Rocket Program Send an Astronaut to Space?

Cars That Think

meter-tall Nexø II rocket was powered by a bipropellant engine designed and constructed by the Copenhagen Suborbitals team. That successful mission in August 2018 was a huge step toward our goal of sending an amateur astronaut to the edge of space aboard one of our DIY rockets. Even more important, it came back down in one piece.

DIY 130
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IoT-ize Your Old Gadgets With a Mechanical Hijacking Device

Cars That Think

Just about every device you own is probably available with Internet connectivity. needs Internet connectivity is up for debate. Connectivity usually comes at a premium, and it also usually involves buying a brand new whatever it is, because new hardware and software and services are required. Or, that was the idea, anyway.

DIY 131
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Build Your Own Hi-fi Ear Defenders

Cars That Think

Now, after countless versions of wiring things together, and even designing my own audio mixers, I finally have a DIY solution that works within a reasonable budget. I was on the hunt for another cheap small MEMS mic that could handle louder sound sources. I found the Vesper VM2020 , with an impressive AOP of 149 dB!

Building 104
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Build a Passive Radar With Software-Defined Radio

Cars That Think

The biggest leap forward happened in 2012 when it was discovered that USB stick TV tuners using the RTL2832U demodulator chip could be tapped to make very cheap but effective SDR receivers. Building off the demand stimulated by this activity, a number of manufacturers have started making premium, but still relatively cheap, SDRs.

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18650 Battery Specification, Price, Charger, Holder, BMS

Electric Vehicless

You may find some local brand batteries starting from 35 INR but never go with a cheap battery only as per our opinion you may purchase from either amazon ,Robu or authenticate source. 18650 Battery connecting nickel plate. For the connection of batteries each other generally uses a nickel plate. 18650 Battery Spot welding.

Price 52