littleBits
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Title:
littleBits Motion Trigge
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Reviews:
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Release Date:
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Genre:
- Byggklossar & byggleksaker
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Availability:
Beställningsvara Leveranstid: från 5 vardagar
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Description:
The motion trigger is similar to the sensor on an automatic door when someone is moving nearby, it sends an ON signal to the following Bits. Its very sensitive, so dont breathe unless you want to be detected Try it with some LEDs to create a security light
The motion trigger is similar to the sensor on an automatic door when someone is moving nearby, it sends an ON signal to the following Bits. Its very sensitive, so dont breathe unless you want to be detected Try it with some LEDs to create a security light
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Title:
littleBits Number Plus
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Reviews:
-
Release Date:
-
Genre:
- Byggklossar & byggleksaker
-
Availability:
Beställningsvara Leveranstid: från 5 vardagar
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Description:
SHORT DESCRIPTION The number module displays information about the signal its receiving from your other modules. It features a two-digit, seven-segment LED display. In the read mode, the module displays information about the signal its receiving. In the count mode, the module counts up or down with...
<b>SHORT DESCRIPTION</b><br/>The number module displays information about the signal its receiving from your other modules. It features a two-digit, seven-segment LED display. In the read mode, the module displays information about the signal its receiving. In the count mode, the module counts up or down with each trigger. The counter can be reset by receiving a trigger at the reset bitSnap.<br/><br/><b>GEEK SPEAK</b><br/>This updated number module has 2 main modes and 2 settings under each mode. Use the 4-position switch to choose between the modes.<br/>READ MODE Read mode has two settings values and volts. The number module reads the voltage on the input bitsnap, then calculates and displays either a value between 00-99 or a voltage between 0.0 - 5.0. The voltage on the output bitsnap is a filtered PWM value that equals the voltage on the input bitsnap.<br/>COUNT MODE Count mode has two settings up from 00-99 and down from 99-00. A step to the next number happens on input low-to-high transitions. The voltage on the output bitsnap is a filtered PWM value that is proportional to the number on display. For example, if the displayed number is 50 then the output voltage is 50% of 5V, or 2.5V. The RESET bitsnap can be used in this mode to reset the number on display. In the up setting, the display resets to 00. In the down setting, the display resets to 99. The RESET bitsnap resets the number on low-to-high transitions.<br/><br/><b>UNDER THE HOOD</b><br/>An Atmega168 is used to constantly read the signal from the switch and determine which mode the module is in. It also reads the buffered signal from the input bitsnap, and sends a PWM signal through a Sallen key filter to the output bitsnap. In read mode, the signal from the input bitsnap is passed from the ADC pin to the PWM output. In count mode, a step to a new number is triggered on a low-to-high pin-change interrupt on the ADC pin. A PWM lookup table is used to output the corresponding PWM value. The reset is also triggered on a low-to-high transition. The Atmega168 also controls the seven-segment LED display to display the correct value.
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