Wiki source code of 03 - Wiring

Version 54.1 by Eric Nantel on 2021/11/19 07:15

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Eric Nantel 4.1 1 {{stepNavigation previousStepURL="https://www.robotshop.com/info/wiki/lynxmotion/view/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-electronics/" nextStepURL="https://www.robotshop.com/info/wiki/lynxmotion/view/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-frame-lid/" pageTitle="A4WD3 Wheeled - Wiring"/}}
Eric Nantel 2.1 2
3 (% style="width:710px" %)
Eric Nantel 51.1 4 |(% colspan="2" style="text-align:center" %)**Radio Controlled (RC) / Bridged**
Eric Nantel 50.1 5 |(% colspan="2" %)(((
6 Both motors on the left side are wired to one channel of the Sabertooth motor controller, and both motors on the right side are wired to the other. This ensures motors on the same side receive the same signal ("skid steering"). The Sabertooth's onboard BEC powers the RC receiver.
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8 Not Connected
9
10 * 4x Encoders
11 * Two of three XT30 connectors
12 )))
Eric Nantel 51.1 13 |(% colspan="2" %){{lightbox image="https://www.robotshop.com/info/wiki/lynxmotion/download/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-wiring/WebHome/ROVER-A4WD3-Wiring-Diagrams-RC.png"/}}
14 |(% colspan="2" style="text-align:center" %)**Microcontroller / Bridged**
15 |(% colspan="2" %)(((
16 Both motors on the left side are wired to one channel of the Sabertooth motor controller, while both motors on the right side are wired to the other. This ensures motors on the same side receive the same signal ("skid steering"). The Sabertooth's BEC can be used to power a microcontroller up to ~~1A. If additional current is needed, consider using a spare XT30 split off from  the main battery to power the microcontroller and disconnect the 5V (red) cable from the BEC.
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18 Optional Connections
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20 * 4x Encoders
21 * Second XT30 to power microcontroller
22 * Third XT30 connector
23 )))
24 |(% colspan="2" %){{lightbox image="https://www.robotshop.com/info/wiki/lynxmotion/download/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-wiring/WebHome/ROVER-A4WD3-Wiring-Diagrams-Autonomuous.png"/}}
25 |(% colspan="2" style="text-align:center" %)**Microcontroller / Independent**
26 |(% colspan="2" %)Two dual channel Sabertooth motor controllers are needed because each motor is connected to its own channel and can be controlled independently. Normally the encoders are connected to the microcontroller to measure angular speed and estimate distance traveled. Connections between microcontroller and the Sabertooth controller and encoders depend on the microcontroller chosen.
Coleman Benson 44.2 27
Eric Nantel 54.1 28 {{warningBox warningText="CAUTION: Before powering the motors, ensure they rotate in the same direction on each side. If the wiring between the motors and the Sabertooth was done correctly, the motors on each side of the robot should rotate in the same direction.<br><br>If the front and rear motors rotate in opposite directions however, the track which connects them will cause them to stall and burn very quickly! If you are at all uncertain, it is safest to remove the sprockets and test the motors. If they rotate in opposite directions, the wiring to the Sabertooth needs to be corrected.
29 "/}}
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Eric Nantel 7.1 31 (% style="width:710px" %)
Eric Nantel 10.2 32 |(% colspan="3" style="text-align:center" %)**Sabertooth 2 x 12A**
Eric Nantel 26.1 33 |(% colspan="1" rowspan="8" style="width:350px" %){{lightbox image="https://www.robotshop.com/info/wiki/lynxmotion/download/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-wiring/WebHome/Sabertooth-2x12-PinOut.png"/}}|(% style="width:35px" %)[[image:[email protected]]]|(% style="vertical-align:middle" %)Positive Input (6-24V / 30V Absolute Max)
Coleman Benson 44.2 34 |[[image:[email protected]]]|(% style="vertical-align:middle" %)Negative Input / GND
Eric Nantel 26.1 35 |[[image:[email protected]]]|(% style="vertical-align:middle" %)M1A / M2A Outputs
36 |[[image:[email protected]]]|(% style="vertical-align:middle" %)M1B / M2B Outputs
37 |[[image:[email protected]]]|(% style="vertical-align:middle" %)Positive Output 5V (Max 1A)
Coleman Benson 44.2 38 |[[image:[email protected]]]|(% style="vertical-align:middle" %)Negative Output / GND
Eric Nantel 26.1 39 |[[image:[email protected]]]|(% style="vertical-align:middle" %)Signal 1 Input (S1)
40 |[[image:[email protected]]]|(% style="vertical-align:middle" %)Signal 2 Input (S2)
Coleman Benson 44.4 41 |(% colspan="3" style="width:350px" %)(((
42 Details regarding the DIP switches can be found on the next page.
Eric Nantel 5.1 43
Coleman Benson 44.4 44 Complete information available [[HERE>>https://www.dimensionengineering.com/products/sabertooth2x12]]
45 )))
46
Eric Nantel 12.1 47 (% style="width:710px" %)
Eric Nantel 17.1 48 |(% colspan="3" style="text-align:center" %)**Gear Motor (36GP-555-27-EN)**
Eric Nantel 18.1 49 |(% colspan="1" rowspan="6" style="width:350px" %){{lightbox image="https://www.robotshop.com/info/wiki/lynxmotion/download/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-wiring/WebHome/36GP-555-27-EN-Wiring.PNG"/}}|(% style="vertical-align:middle; width:35px" %)[[image:[email protected]||alt="SQUARE-Red.png"]]|Motor Positive
50 |[[image:[email protected]||alt="SQUARE-Black.png"]]|Motor Negative
Coleman Benson 44.2 51 |[[image:[email protected]||alt="SQUARE-Yellow.png"]]|Encoder Negative / GND
Eric Nantel 29.1 52 |[[image:[email protected]||alt="SQUARE-White.png"]]|Encoder Positive (5V)
53 |[[image:[email protected]||alt="SQUARE-Red-Soft.png"]]|Encoder Output 1 (Hall Effect)
54 |[[image:[email protected]||alt="SQUARE-Gray.png"]]|Encoder Output 2 (Hall Effect)
Eric Nantel 45.1 55 |(% colspan="3" style="width:350px" %)
Eric Nantel 17.1 56
Eric Nantel 20.1 57 (% style="width:710px" %)
58 |(% colspan="3" style="text-align:center" %)**RC Receiver (RadioLink R8EF)**
Eric Nantel 26.1 59 |(% colspan="1" rowspan="7" style="width:350px" %){{lightbox image="https://www.robotshop.com/info/wiki/lynxmotion/download/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-wiring/WebHome/R8EF-PinOut.PNG"/}}|(% style="vertical-align:middle; width:35px" %)[[image:[email protected]]]|(% style="vertical-align:middle" %)Positive Input & Distribution (5-6V)
Coleman Benson 44.2 60 |(% style="vertical-align:middle" %)[[image:[email protected]]]|(% style="vertical-align:middle" %)Negative Input / GND & Distribution
Eric Nantel 26.1 61 |(% style="vertical-align:middle" %)[[image:[email protected]]]|(% style="vertical-align:middle" %)Channel #1 (SBUS Optional)
62 |(% style="vertical-align:middle" %)[[image:[email protected]||alt="SQUARE-White.png"]]|(% style="vertical-align:middle" %)Channel #2 (PPM Optional)
63 |(% style="vertical-align:middle" %)[[image:[email protected]||alt="SQUARE-Red-Soft.png"]]|(% style="vertical-align:middle" %)Channel #3
64 |(% style="vertical-align:middle" %)[[image:[email protected]||alt="SQUARE-Gray.png"]]|(% style="vertical-align:middle" %)Channel #4
65 |(% style="vertical-align:middle" %)[[image:[email protected]||alt="SQUARE-Green.png"]]|(% style="vertical-align:middle" %)Channel #5
Eric Nantel 20.1 66
Eric Nantel 4.1 67 {{stepNavigation previousStepURL="https://www.robotshop.com/info/wiki/lynxmotion/view/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-electronics/" nextStepURL="https://www.robotshop.com/info/wiki/lynxmotion/view/rover-kits/a4wd3-wheeled/a4wd3-wheeled-quickstart/a4wd3-wheeled-frame-lid/" pageTitle="A4WD3 Wheeled - Wiring"/}}

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