New in the Adafruit store… RGB LEDs, IR sensors & Hall effect sensors

A few new items in the Adafruit store…

Rgbled Lrg
Diffused RGB (tri-color) LED – Diffused 5mm tri-color LED with red, green and blue inside! Nice indicator, and fun to color-swirl. 80 degree viewing angle. Red LED Vf = 2.1V, Green LED Vf = 3.3V, Blue LED Vf = 3.3V. About 1000 millicd. per LED output brightness (no datasheet, sorry!) To use, connect the longest lead to Vcc/power, and then connect the other three remaining leads to ground (or your microcontroller pins) through a proper series resistor. If you’re using 5V, we suggest going with 150 ohm for red, and 82 ohms for green and blue for max brightness. Higher valued resistors for less brightness.


Irsensorpna4602 Lrg
IR sensor – IR sensor tuned to 38KHz, perfect for receiving commands from a TV remote control. Runs at 5V (although it seems to be OK down to 3.3V) To use, connect pin 3 (all the way to the right) to 5V power, pin 2 (middle) to ground and listen on pin 1. It doesn’t do any decoding of the signal, just passes the ‘raw data’ along. Check out the datahseet!


Halleffect Lrg
Hall effect sensor – Hall effect sensors detect whether a magnet is near. Useful for non-contact/waterproof type switches, position sensors, rotary/shaft encoders. This sensor is used in the SpokePOV kit to determine when the wheel has made a revolution. Runs at 3.5V up to 24V. To use connect power to pin 1 (all the way to the left), ground to pin 2 (middle) and then a 10K pull up resistor from pin 3 to power. Then listen on pin 3, when the south pole of a magnet is near the front of the sensor, pin 3 will go down to 0V. Otherwise it will stay at whatever the pullup resistor is connected to. Nothing occurs if a magnet’s north pole is nearby (unipolar). Works fantastic with the high strength magnet Read the datasheet. Read a nice whitepaper from the manufacturer with many ideas and designs for use


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5 Comments

  1. shavenwarthog

    “datahseet!”

  2. I’m changing suppliers. The Melexus data sheet and apps paper sure beat what I got from Honeywell.

  3. i really do like these hall effect sensors. I bought one of each hall effect sensor available from digikey when specing out the spokepov kits and this one was a major winner (the DN6852 was the best but sadly discontinued)

  4. Do the Hall sensors produce an analog reading too? You describe it as a digital trigger.

  5. Never mind I read the data sheet sorry it’s meant to be a trigger.

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