Dreaming Robots Camera Axe 5 Руководство пользователя - Страница 6
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Печатать страницуvoltages are within the range of 0 to 5 volts.
USB Port
On the standard Camera Axe there is also a USB port. This port is used for programming the
Camera Axe with new firmware and to recharge the internal battery.
On the Camera Axe Shield the USB port is located on the Arduino board. This can be used to
power the Camera Axe shield or to reprogram the board. The Arduino also has a 2.1mm dc
jack that can provide power. It accepts 6-12V DC power.
Menus
The Camera Axe provides several different sets of menu operations as described below. Based on
the pressing of the Activate button, the Camera Axe will either be in the "menu" or "photo" mode.
When the Camera Axe is in the menu mode, the various settings can be adjusted according to the
description below. When the Camera Axe is in photo mode, the unit is monitoring the sensors and is
ready to trigger an image.
NOTE: Except for the settings in the General Settings menu, the settings in each menu are
independent. For example, the settings in the Advanced Sensor menu do not affect the
operation of the Camera Axe when using the Projectile, Valve or Intervalometer menus.
Depending on the menu function, there are two different ways that the Camera Axe reads
sensor values.
Depending on the menu function, there various ways the middle sensor pin works:
● analogRead – This returns an analog value between 0 and 1023 proportional to the sensor
voltage of 0 to 5 volts. The Camera Axe displays values from 0 to 999. This is the slower way
to read the sensor value (still quite fast at 20 microseconds) but it provides the ability to read
the range of values from the sensor. This method is used by the Advanced Sensor menu to
allow triggering on a setting or threshold value.
● digitalRead – This is the fastest way to read the sensor state. It only returns a high (1) or low
(0) value. This method is used by the Projectile and Fast Trigger menus.
● Digital out - In this mode sensor pin acts as a digital output sending 0 or 5V. The maximum
output current is around 30 mA. This mode is used by the valve sensor to trigger to allow the
Camera Axe to trigger the valve.
The tip of the sensor has all the functionality above plus the ability to optionally switch in a larger
current (up to at 100 mA). This larger current is used to power various sensors that may require more
power.
Advanced Sensor Menu
The advanced sensor menu is shown in the image below. Due to the display size, the entire menu
shown below is not visible at the same time. Pressing the up and down arrows will scroll the display
to show the rest of the menu. This is a flexible mode that works well with most sensors. As described
above, the select and arrow buttons allow the user to navigate to the different parameters to set up
the menu functions.