Every time I want to try something new on the Arduino, I end up buying a chip or two for 2 bucks and paying $9 for shipping! Instead I'm thinking it would be cool to create an "essential parts list" for the Arduino. Then, the next time I have to buy some components, I could peruse the list and chuck in some parts that might be cool to have for future projects -- but not have to spend the time to research the part to ensure TTL compatibility (for example).
Of course, everyone could benefit from this list, and I'm sure you all can contribute a LOT more then me. I briefly checked the playground but didn't find any comprehensive list.
I think that a requirement should be that the chips be cheap... definitely less then $5, but around a buck or two would be best, that they are pretty easy to connect to the Arduino, and of course that they be easy to work with (thru hole is best). Another requirement would be that the chip is stocked where ever you are buying your parts...I am going to start with FutureElectronics (www.futureelectronics.com) because IMHO they have a good search engine.
So far, these are not chips I've tried -- just stuff I've found and am thinking of buying -- I've not done much more than pop the spec up for each one and verify 5V compatibility. I'm sure there are some mistakes in it.
Please add the sensors you've worked with and how it went!
OpAmps for magnifying sensor output: $1: LMC6482 Series 8 Pins MDIP CMOS Dual In/Output Operational Amplifier $0.17: LM358 Series DIP8 High Gain Low Power Dual Operational amplifier Anyone have experience with these?
Sound input: Microphone anyone? Do I need a special amplifier for it? $2: LM386 Series 8 Pins MDIP Low Voltage Max 15 V Audio Power Amplifier
Magnetism: $.50:GENERAL PURPOSE HALL EFF SW (US1881LUA) $2: MLX Series 3-9 mA 4.5-5.5 V SIP-4 Programmable Linear Hall Effect Sensor (MLX90251LVA-3)
Motion: Accelerometers: Linear: Rotation:
Light: $1: 580 nm 6 V 260 uA Through Hole Cadmium-Free Analog Light Sensor (AMS302) Photoresistor anyone?
Weather: Temperature: $0.50: Vishay NTCL Series 10K Ohm 5 % 3977 Beta Radial NTC Thermistor (2381-640-63103) $0.70: LM335 Series TO-92 Through Hole 3.04 V Precision Temperature Sensor (LM335Z)