The BPW34 is a tiny, general purpose PiN photodiode. This photodiode has a ton of uses, one of which is to use it is a mini solar cell to power your project. The cell is sensitive to a wide range of light wavelengths (430-1100nm), so it'should produce power in a number of different settings. The rated open circuit voltage is 350mV (900nm, 1mW/cm2 light source), and short circuit current is 47µA.
These are fun (of course)!****We shined a 940nm infrared LED on one of them and it produced about 0.5VDC open circuit voltage. Stringing four together in series, we were able to turn an LED on with them. They'll also produce a small voltage, ~250mV, in a brightly, fluorescent-lit room.
This is a simple coin cell battery holder that can enclose two CR2032 batteries inside itself, and safely kept closed via two phillips head screws. Each battery holder will run batteries in series, output up to 6V, and is equipped with an On/Off slide switch and two 6" power wires (one positive and one negative) on the back.
This is the P2N2222A, an NPN silicon BJT (Bipolar Junction Transistor). This little transistor can help in your project by being used to help drive large loads or amplifying or switching applications. The P2N2222A is specifically rated at 40V and 200mA max
This may seem like an odd one for us, but pull-chain switches are actually pretty handy! This is similar to the kind of pull-chain you\'d find on lights and ceiling fans. it\'s a simple SPST on-off switch (pull once for on, pull again for off). This switch has 6" wire leads and a 10" pull-chain. The switch can be panel mounted in a 3/8" diameter hole.
This is the kind of seat-of-the-pants engineering genius that you only find in hackspaces, garden sheds or Shenzhen.
it\'s not for the faint-of-heart, it\'s not particularly spec-friendly, but it is useful and cool for Pi Zero hackers!
Testing surface-mount components with standard test leads is anything but easy. Everyone has their own method: some people tackle it with teamwork and have a friend (or grad student) hold the probes, some people have adapted a sort of chopsticks-like technique, but the best way by far is probably just to buy these handy tweezer probes! Tweezer probes...
This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it lsquo;click rsquo; really well). This button is great for user input on a PCB or a good, big reset button on a breadboard. Breadboard friendly!
Miniature Single Pull Single Throw switches. These are high quality Omron type B3F momentary on switches. This switch has a very large 5mm tall button. Perfect as an embedded switch behind an enclosure wall. Rated up to 50mA.
Miniature Single Pull Single Throw switches. These are high quality Omron type B3F momentary on switches. This switch has a very large 13mm tall button. Perfect as an embedded switch behind an enclosure wall. Rated up to 50mA.
This is a standard 12mm square momentary button. What we really like is the large button head and good tactile feel (it "clicks" really well). This button is great for user input on a PCB or a good, big reset button on a breadboard. Breadboard friendly!
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