Frequently Asked Questions
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September 30, 2010
about 5 months ago
SPI is type of serial connection.
about 6 months ago
the traces on the board are too small to handle much current. the warning assumes that if you’re doing something that needs more power than your typical LiPO then the board traces won’t handle it. however, if it’s high voltage but a tiny current it would likely be fine.
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about 8 months ago
BealgeBoneBlack compares a lot better. it too can be powered from a lipo pack directly and integrates a battery charge IC. it’s not quite as power efficient at 2.3W peak and 1.05W idle, but it does have a lot more IOs including multiple UARTS and i2c and SPI buses, and PRUs that are accessible right now. And it has the USB, HDMI, and ethernet that some people want. And it’s $55, not including BT or WIFI. But really, your typical robot doens’t need BT and wifi , and often neither.
the rPi is a fine cheap little linux desktop, but it’s really poorly spec’d in comparison to everything else out there. it’s cheap, and that’s really its only advantage.
about 8 months ago
keyboard and mouse? will there be a display block of some form? oled? lcd? hdmi?
description has the word stack, and the 2nd picture shows them stacked, so it would appear so. a picture of the other side of the board would be nice though.
about 9 months ago
you don’t need to modify at all. just pass the min and max to the attach function.
this is the same connector using in RC cars. unless you have something tug on the wires, it’s not going to come loose very easily. you could always add some kind of physical latch or restraint.
4.8-6V for power, signal might work on 3V, datasheet doesn’t say.
since it’s got electronics it’s not like a normal motor, not enough volts or amps means it does not operate.
about 11 months ago
this appears to be the same, but it really depends on the USB host. some will give the 500ma, or more, without negotiation, especially USB hubs.
official product page says 100Mbit.
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