51 lines
2.0 KiB
Markdown
51 lines
2.0 KiB
Markdown
# Hardware Quality Control
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This PAGE IS OUT OF DATE, we already have this BIG TIME.
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Between chip shortage, quick prototyping pace and choice of semi-manual assembly we have less than 100% quality.
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As of July 9th we have custom FW builds and custom LED board with custom undocumented wired pigtail. Humans are to program, initiate test and evaluate LED status.
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We need a solution to speed up the complete programming and validation cycle of freshly assembled boards.
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The plan is to develop incrementally starting with a quick & dirty solution.
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In the end we would need 5-25 units total (one unit soldered to application-specific connector, multiplied by number of people) so we shall maximize use of JLCPBC assembly from beginning.
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For first round the proposal is to test functional blocks as separate small PCBs, long term we might Hellen merge or not.
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We are building Stim using NUCLEO-F429ZI due to chip shortage. NUCLEO-F429ZI would be plug into [NUCLEO144 Wing](https://github.com/rusefi/hw_modular/tree/master/NUCLEO144_wing) and wires or connectors would be routed via NUCLEO144_wing.
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## Requirements
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In the order of priority
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1. Minimal possible number of clicks hardware quality control procedure
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1. Automated green or red huge bright LED at the end of the test
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1. Validate low side digital outputs
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1. Validate 5v and 12v high side outputs
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1. Validate Hall inputs and switch inputs
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1. Validate analog inputs
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## Overview
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We have ECU, PC and Stim device interconnected.
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PC runs overall control software.
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PC uses ST-Link to flash rusEFI ECU with special QC firmware if needed.
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PC has USB CDC with Stim.
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PC _probably_ has USB CDC with ECU. Funny idea: CAN bus between ECU and Stim?
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Problem: sometimes we do not want to feed ECU via ST-Link. Solution: Stim has a switch(es) (red board on the photo) to break +5v line(s) between PC and ECU.
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See [Tag-Connect-TC2030](Tag-Connect-TC2030)
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See [rusEFI Stimulator](https://github.com/rusefi/stim)
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See [microRusEFI-QC-Procedure](microRusEFI-QC-Procedure)
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