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by norwayman22
Sun Apr 05, 2026 9:09 pm
Forum: ESP-IDF
Topic: RISC-V ULP ADC readings are off
Replies: 1
Views: 51

RISC-V ULP ADC readings are off

Hi, I'm trying to use the RISC-V ULP ADC example code ( https://github.com/espressif/esp-idf/tree/master/examples/system/ulp/ulp_riscv/adc ) on my ESP32-S3 with my wpm356 water quality sensor and I'm getting strange results.

I've set EXAMPLE_ADC_TRESHOLD to 1 for testing and my ADC readings are ...

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