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Littlebits Sequencer


The sequencer allows you to connect up to eight outputs and control them in sequential patterns. Sequences that would take as long as 4 days to program without littleBits will only take you seconds!

  • --Automatically cycle through the entire sequence
  • --Control the speed of the sequence using dimmers or sensors
  • --Run the sequence four ways: forwards, backwards, pendulum, or random
  • --Swap automation for full control and step through each part of the sequence using a button, sound trigger, or any other high signal input

The input signal is buffered by an opamp (U1), then passed through a single pole RC low pass filter, then a 2-pole active low pass filter (U3). The combined filters band limit the signal to 160Hz with an 18dB per octave filter slope. This signal is split into two paths. One path leads to the Analog-to-Digital Converter (ADC) of an Atmel ATMEGA168 microcontroller (U2). The other path leads to a General Purpose Input-Output (GPIO) pin on the same microcontroller. The path to the ADC is used in “speed” mode because in speed mode, we need to precisely measure the input voltage, and the ADC is precise. The path to the GPIO pin is used in “step” mode, because we need to quickly measure the timing of an input low-to-high transition, and the GPIO pin responds very quickly to transitions. Depending on the clock mode, microcontroller converts the measured input values into either the sequencer step speed in “speed” mode, or simply goes to the next sequencer step when it detects a low-to-high transition in “step” mode. These values are translated into signals that control the pins of the microcontroller connected to the various outputs.

Product Specifications

  • Dimensions (mm):1.13(H) x 0.06(W) x 4.63(D)
  • Product Weight:0.02 lbs (0.01 kg)
  • Recommended Age:8+
  • SKU:650-0008
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