Electronics - Robot DHQ

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Electronics

Design > General Info
Electronics Design

The design of sensors, servos, communications, information display and logic elements comprise the electronics design. The design of other components is documented separately. Computer hardware design is HERE. Other hardware design is HERE. Power supply design is HERE.

The following design elements are common to all the Robot DHQ electronics components.

1. Digital and analog electronic communications is conducted via signals in the 0 to 5 volt range.

2. Digital information such as the state of push buttons and switches (High/Low) is transmitted as a TTL level.

3. Other digital information is communicated via encoded serial bit streams.

4. Analog information is communicated as a voltage potential in the range of 0 to5 volts DC.

5. The intent of this part of the electronics design is to make it easy to process communications between design elements using Arduino Uno, Arduino Nano and other 5 volt Arduino and TTL devices. Devices that do not operate at or tolerate these voltages need to provide appropriate level shifting to be compatible with the Robot DHQ design.

6. Ground (reference ground, i.e. 0 volts) is always provided or required on "pin 6" of the standard Robot DHQ cable.

7. Power (at 5 volts) is always provided or required on "pin 3" of the cable.

8. Other "pins" are defined by the requirements of each use case and by the hardware of each physical implementation.

9. The electrical current sourced or demanded by any particular pin depends on the use case and the design may specify these particulars or not so the builder needs to be alert to the potential for negative consequences of deviating from pretested configurations.

Feedback and suggestions are always welcome.


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