Blogs

How ArduCAM use external trigger from a sensor

The ArduCAM shield has 6 general purpose IOs which can be set as input or output and greatly extend the power for the Arduino board which has limited IO resources. The structure of the IOs in the ArduCAM shield is the same as the one in the AVR chip, it has a direction register(DDR), a input register(PIN) and output register(PORT). In this demonstration, we will illustrate how to set the GPIOs in the ArduCAM shield as an input and use a PIR sensor triggering the shield to start a capture. (more…)

mini 2mp plus back

ArduChip Registers

ArduChip is the core of the ArduCAM, which incoperates a Altera MAXII CPLD EPM240 as main processor. The main task of the ArduChip is do the real time DMA transfer between Camera module and the 3.2″ LCD and act as Arduino, Camera and LCD bus multiplexer. It also provides AVR like GPIO expansion, it can be set as input or output and resolve the problem of limited IO resources in Arduino board. The GPIOs can be used as event trigger in and trigger out.  (more…)