Strain Gauge Module

(SGM)

Description

Strain gauge is a type of sensor that outputs a voltage relative proportional to an applied force, pressure, weight, or tension. On REV3, the following parts are measured by the strain gauge: ().

Strain Gauge Module (SGM) - User Guide

Functional Description / User Guide

This is a document that captures an overview of each subsystem, use case, and relevant components. Similar to a User Guide, this document explains how to use a feature of a project. For example, it will explain the necessary hardware connections and how to communicate over CAN to the BMS. There may be several Function Descriptions (one for each revision).

Strain Gauge Module (SGM) - Datasheet

Datasheet

Datashetet.

SGM Test Plan

Test Plan

This is a spreadsheet of each test that confirms that the project satisfies each engineering requirement.

Initial Research - strain gauge

Initial Research

Learning what strain gauge is.

Requirements

Specific criteria that the device should follow. These should be measurable and testable.

Fallacies and Pitfalls

Mistake 1

When performing the tests for the PCB, it is important to test continuity and isolation between power planes before applying power to the 12V input. Next time, continuity between 5V and 3V3 should be tested before applying power.

Mistake 2

Every IC on the PCB must be checked to make sure it is implemented correctly. For power and LDO components, the simpler, the better. Cheap components from JLC PCB do the job.

Mistake 3

After several changes to the STM32 variant, we did not adequately check UART, CAN, or JTAG pins. They were flipped, or specified for the wrong STM32 pins.

Revision Changes

Electrical projects may go through 2-3 revisions before the project is complete. Keep a record of changes for each revision. I recommend following the outline below:

Project Team Members

<Team Lead> - <Clayton Koppi> - <(413) 284-7356> - Slack is the best way to reach me!

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