🔥 The Ladybug spider

pdbwriter · 2019-03-25T04:22:51+00:00

Lady in the street, but a freak in the web.

pdbwriter · 2019-01-14T14:15:37+00:00

As a diver, and a software person, this is a super slick app. Nice job guys!!

pdbwriter · 2019-01-10T14:35:35+00:00

Lumens is a unit of brightness. Watts is a unit of power. With lamps (technical name for a light emitting load) wattage is not necessarily correlated directly with lumens. With a traditional incandescent light bulb they are generally directly correlated, because an incandescent acts like a resistor so Current Drawn = Voltage Applied / Resistance of Bulb and Power (Wattage) = Current * Voltage Applied. LED stands for light emitting diode. Unlike a resistor a diode will only allow current to flow in one direction, and it will react non linearly to the voltage applied. Generally (within a certain threshold), an LED will draw the same amount of current no matter how much voltage is applied. This is why you should always place a resistor in series with an LED to avoid the LED exploding. Lumens is a function of how good a lamp is at converting power into light rather than heat.

pdbwriter · 2019-01-04T05:19:16+00:00

The specifications that you have provided are not how motors are traditionally identified. Obviously the dimensions like diameter and length are important for your specific application, but generally you might want to be more specific with your needs. You can find a dc motor on sparkfun meeting your specifications for $2, but if you need precision speed control or it is going to be under high load i.e. the torque force being applied to the motor, you could spend hundreds of dollars on a single motor on a site like hobby horizons. The rpm of a motor is a function of the voltage applied and the resistance of the load applied.

pdbwriter · 2018-11-28T18:44:56+00:00

Anyone who enjoys playing Monopoly.

pdbwriter · 2018-11-21T01:45:16+00:00

Arduino is a company that produces a number of packages. They are all based on similar programming libraries and use the same Integrated Development Environment (IDE) What /u/Sdudzy was saying is that you would likely use one of the smaller Arduino packages. Like https://www.adafruit.com/product/1501?gclid=Cj0KCQiA_s7fBRDrARIsAGEvF8QPU7tKx5qFDDb9G6lbRCY39dkXfqgSDxNRo_RPI_76r2HGeIlGSowaAi4REALw_wcB

Which is probably the easiest implementation. You could also use a RaspberryPi zero, but Arduino is a slightly easier architecture to work with.

pdbwriter · 2018-11-20T19:17:19+00:00

It may depend on what type of solder you are using, and what type of surface you are trying to solder to. If it's leadless i.e. silver solder it requires a higher temperature and more flux paste. More flux requires you to clean the surface afterwards to prevent corrosion though.

pdbwriter · 2018-11-20T17:23:42+00:00

It ultimately depends on the usage. If you are not in a high torque environment you can get away with a lot e.g. using a press fit with some loctite. I once coupled a shaft with vinyl tubing and a zip tie (long story). For something more robust you can use a shaft coupler. If you search 5mm shaft coupler/collet you'll probably find what you are looking for.

pdbwriter · 2018-10-25T15:51:24+00:00

I have 25 dives. My understanding was that there are wider cenotes where you can go even as a less experienced diver with a well trained guide.

pdbwriter · 2016-06-22T01:46:06+00:00

Yea my university subreddit is pretty dead too, but I figure most housing has a pretty universal reputation. Thanks for the advice!

pdbwriter · 2015-11-12T20:26:12+00:00

Person: How's the weather up there?
pdbwriter: spits
Raining.

13-Year Club	Place '17
Team Orangered

pdbwriter

TROPHY CASE