  Caribou is a flexible open-source DAQ system developed and used within
several collaborative frameworks (CERN EP R&D, RD50, AIDAinnova) for laboratory
and high-rate beam tests and easy integration of new silicon-pixel detector
prototypes. It uses common hardware, firmware and software components that are
shared across different projects, thereby reducing the development effort and
cost for such readout systems significantly.
  This contribution introduces the FASTPIX, APTS and DPTS detectors recently
integrated in Caribou and their requirements in terms of waveform sampling and
timing of digital pulses. A Time-to-Digital-Converter implemented in the
Caribou FPGA was developed to overcome the limitations of the previously used
oscilloscope-based readout. It allows for precision timing over large time
spans required for the Time-of-Arrival, Time-over-Threshold, and position
encoding used in the FASTPIX and DPTS test chips with asynchronous digital
readout. A time resolution after calibration of better than 10 ps is achieved.
