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Added ADC_MULTIPLIER (default=1) to v3 board. Added correct multiplier to ini of WP.
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This was referenced Feb 3, 2026
oltaco
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Feb 4, 2026
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I think it would be cleaner to change
return (5.42 * (3.3 / 1024.0) * raw) * 1000; to return (ADC_MULTIPLIER * (3.3 / 1024.0) * raw) * 1000;
And add -D ADC_MULTIPLIER=5.42 to the other variants which use this board (heltec_v3 and heltec_tracker), and then you can use the true multiplier of 8.4 for the heltec wireless paper.
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Added ADC_MULTIPLIER (default=1) to v3 board.
Added correct multiplier to ini of WP.
I think this is the easiest fix for the Heltec Wireless Paper not showing correct voltage.