Signal Generation & Processing Object List:

Infinite Implulse Response (IIR) Recursive filter, implemented in pasm, with recursion. Starts a cog which continuously polls a memory location looking for a data value. The design objective for this ...

A 4-element infinite impulse response (IIR) digital filter with recursion, implemented in spin. This filter is best suited for low-to-moderate bandwidth filtering applications (e.g. filtering accelerometer or Ping))) data). Uses ...

Infinite Impulse Response (IIR) Recursive filter, implemented in PASM with floatmath. Starts a cog which continuously polls a memory location looking for a data value. The design objective for this ...

Easily control several 74HC595 shift registers in series. Now includes a variation which leaves out the PWM feature and instead supports up to 100 chips! Still also includes the multi-PWM ...

The ADC Input Driver (http://obex.parallax.com/objects/488/) does this object's frequency reading and a lot more. It is also compatible with all MCP3X0X ADCs.

ADC Frequency Reader:
This PASM-driven object reads values ...

ADC Input Driver:
Driver for MCP3X0X ADCs. Driver features include support for Microchip ADCs with anywhere between 1 and 8 ADC input channels and resolutions of 16 bits or less. ...

An extremely small and quick driver for the ADC0831 chip, includes a voltage converter subroutine

ADC0831 8-bit ADC block sample driver, written in pasm. Uses a cog to get a user-specified number of 8-bit samples at a user-specified sample rate (max 30,000 samples/sec). The samples ...

Bare-bones ADC0831 8-bit ADC driver, written in pasm. Uses a cog to get 8-bit adc samples at a max rate of 30,000 samples/sec.

Bare-bones ADC0831 8-bit ADC driver, written in spin. Adapted from: http://obex.parallax.com/objects/248/ with mods:
•ADC0831 driver code encapsulated into a self-contained object
•Interface adjusted to follow propeller object conventions
•Max ...