Dreaming Robots Camera Axe 5 Manuel de l'utilisateur - Page 6

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voltages 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.