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858D+ Rework Station Arduino FW with Calibration Program

3,852 views · Published 26 May 2017 · 30:28 · Indexed 5 October 2026

Channel: bwack · 2017 · Science & Technology

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Based on Madworm's FW.
Related forum-post: http://www.eevblog.com/forum/reviews/youyue-858d-some-reverse-engineering-custom-firmware/msg1218513/#msg1218513

Here is my code, forked from madworm's repository https://github.com/bwack/Youyue-858D-plus

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Enter the CFG menu and set ADC=1.
Take five measurements with five different temperature settings, write down the adc value and measured temp.
Enter the CAL menu and adjust the numbers Ad0-Ad4 and T0-T4 with your measurements.

Changes:
Averaging on the ADC value shown with CFG ADC=1.
Added piecewise_map() function with five calibration points (adc, temp). Returns temperature.

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