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A DIY E-bike Conversion on the Cheap

Cars That Think

Terrafirma Technology , a company started by an engineer named Michael House who has gone into business supplying 3D-printed adapters to people who want to repurpose lithium-ion power-tool batteries. All that was needed was a suitable adapter, which I bought for $18 from. On the handlebars are three controls: a.

DIY 145
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A DIY E-bike Conversion on the Cheap

Cars That Think

Terrafirma Technology , a company started by an engineer named Michael House who has gone into business supplying 3D-printed adapters to people who want to repurpose lithium-ion power-tool batteries. All that was needed was a suitable adapter, which I bought for $18 from. On the handlebars are three controls: a.

DIY 98
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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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Dodge Circuit EV First Drive: electric car makes grand promises on Earth Day

Tony Karrer Delicious EVdriven

I also think it will be cheap, which is why I think someone will buy the group. In California, 20% of our electricity comes from zero CO2 renewables (sun, wind, geothermal), another 20% from zero CO2 hydro, and only 20.1% ↓ ↑ report 12 Throwback 11:29AM (4/23/2009) Envi includes the GEM entries.