Please create an account to participate in the Slashdot moderation system

 



Forgot your password?
typodupeerror
×

Comment Re:I read it on Firefox (Score 2) 507

Chrome not being able to bookmark all tabs to a folder is a serious deficiency that prevents me from saving sets of links that are the result of possibly lengthy research. Another constant annoyance is Chrome saving all files to Downloads instead of giving me the option to open.

Bookmarking all tabs is right-click on any tab, Bookmark All Tabs. Prompt for download location is a setting in Tools, Options, Under the Hood.

Comment Re:Ack! (Score 1) 177

The Samsung Galaxy S has had Bluetooth HID support for keyboard and mouse since Android 2.2. I've been using it with Bluetooth SPP since version 2.1, but it has a quirk where it won't connect to a serial device with class of service = 0, not sure if they've fixed that yet.

The Galaxy S doesn't use the Bluez stack, it uses some Broadcom closed-source code instead. It doesn't support L2CAP so you can't use Wiimotes.

Comment Re:Really, Flash Destroyer the best example? (Score 2) 48

A good digital scope costs hundreds if not thousands of dollars, so as a hobbyist I can't really justify that, but a $30 Logic Shrimp is just fine. I'm using it instead of a scope to do basic viewing of suspect or undocumented signals. When some pulse-width code driving a servo on a PIC32 wasn't working, for example, it was a useful check on exactly what was being generated.

Comment Re:1.0... of a set of principles (Score 1) 59

Like open source software it's not just being able to change the design, it's having access to the full internal details of the product. Companies are encouraged to produce open-designed hardware or variants of it because it's cheaper than designing new hardware and marketing it from scratch, and when you buy it you get the full details of how it was made, so you can easily use, repair, reprogram and extend it without having to beg implementation details from a vendor who is uncooperative because they're trying to shield their proprietary designs from competitors.

Look at what Seeedstudio are doing with Arduino boards for example; they have taken the open-source Arduino design and extended it in interesting ways (Seeeduino Film for example) and they publish the full circuit diagrams, board layouts and firmware so if you want to mod or fix their boards you can.

Comment Re:Really? (Score 1) 87

Apps can include background services, but by design they can't start the services on install, they are only allowed to start them when the application is run for the first time, or when the device is rebooted. However they can hook system events on install so the app can be launched when the phone receives an SMS for example.

Comment Re:Why the low efficiency of these new electric ca (Score 1) 450

The lead-acid battery GM EV-1 was supposed to get 100 miles on a 10 kWHr charge (yeah, yeah, YMMV).

The EV-1 lead-acid batteries were 16.5kWh and 55-75 miles range according to Wikipedia (0.3-0.22kWh/mile). The 27kWh NiMH battery pack had a similar kWh to miles ratio (75-150 miles range so 0.36-0.18kWh/mile). The Volt does about the same with 10kWh (it doesn't use the full battery capacity to increase longevity) for a 35-50 mile range (.28-.2 kWh/mile).

Comment Re:I agree, the chevy volt is not a EV (Score 1) 301

Under normal, battery-charged conditions and under 70 MPH, the gasoline engine does not run at all.

This is not correct. The gas engine doesn't turn on at all when the car is in electric mode, even when driving over 70mph. When the car is in charge-sustaining mode, that is the battery is depleted, the gas engine is directly connected to the wheels under certain conditions from 30mph.

GM says: "The engine WILL NOT turn on while the car is in electric driving mode (which for your trip two days ago approached 50 miles) – simply put, it is a full-performance battery electric vehicle.

Once the battery is depleted, the Volt’s gas-powered engine engages to create the power needed to extend the range of the vehicle several hundred additional miles. In extended range mode the Volt is powered by either a 1-motor series or 2-motor combined mode. The vehicle will select the most efficient mode for the driving condition: 1-motor series – for operations almost exclusively below 30 mph; 2-motor combined almost exclusively above 70 mph. At speeds in between 30-70 mph, the Volt will select the most optimally efficient drive mode amongst the two."

Slashdot Top Deals

Serving coffee on aircraft causes turbulence.

Working...