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41 lines
1.1 KiB
Markdown
41 lines
1.1 KiB
Markdown
Science Node
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============
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Designed by Anthony Grana.
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Summary
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-------
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Made for the science end affector for the 2018 rover. Powers, and
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comunicates with the [Soil
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Probe](https://www.fondriest.com/pdf/stevens_hydra_manual.pdf) via
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RS-485. Uses simple logic to power a drill motor (24V,5A, full forward,
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full back, stop). Outputs 5V to power a [digital
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camera.](https://www.amazon.com/Canon-PowerShot-Stabilized-2-7-Inch-Black/dp/B0035FZJJ4)
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Sends a signal to the didgital camera to control shoot and zoom.
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### Bill of Materials
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[Bill of
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Materials V1.1](https://docs.google.com/spreadsheets/d/1dY48bTzPCWO-qP4mQwElCYWBNv3Bg6SGOoxIt3NPqik/edit?usp=sharing)
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#### Design Files
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[Science node on circuit
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maker](https://workspace.circuitmaker.com/Projects/Details/Anthony-Grana/Sience-Node)
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[V1.1](files/SienceNode.Zip)
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### Known Issues
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V1.1
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1. The Drill motor controller will pull 5A but the curent power connector for the board can only handle 3A.
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2. For both RS 485 chips, the RX and TX pins need to be reversed.
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3. The RS 485 for the soil sensor is connected to the CAN RX TX instead of the Serial RX TX.
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V1.2
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No Known Issues
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