EVTV Friday Show - March 20, 2015

- Damien Maguire visits EVTV
- Progress on the Ebenspraecher high voltage liquid heater
- An entire Tesla drive train from eBay

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BMW C-Evolution Assembly Videos

On April 4, BMW started production of C-Evolution electric scooters in Berlin.

Now, on the BMW Club-RT channel, we see several videos from the production line.
First units should appear in showrooms in Germany and some other countries next month. The price for this machine is set at ~ €15,000.

Its 8 kWh battery pack provides 100 km (62 miles) of real world range. Motor power at 35 kW peak is in Zero S territory (~40 kW). 0 to 100 km/h (0-62 mph) takes just 6.2 seconds and the maximum speed is set at 120 km/h.

BMW Berlin Plant – Time For A Workout

And here's a bonus video showing how the BMW Berlin plant actually operates
It seems that they have everything they need onsite, including a personal trainer who ensures that the workers stay in shape so that production hums along.

Source: Inside EVs

LiFePO4 ESS update - Arduino & Relays - Test #2

The sketch / program I wrote to interface Wattson with Arduino seems to work OK
It needs a little tuning here and there but I am happy with this 2nd test :-)

On the netbook screen (right window) you can see the Serial port information sent by the Arduino board:

Green / Blue / Red voltages read every 500ms

Depending on these values the program puts the output pins to High or Low, which energizes or not the high voltage relays, which in turn switch ON or OFF the Grid Tie Inverters

And it is trying to keep Wattson in the Blue or Green modes, meaning Low usage, or Negative usage (but not too much waste)

If seems to work OK, but I will have to spend some more time tuning it