Title: I&#x27;m stuck on a particularly irritating show-stopping bug (microchip&#x27;s ADC functionality just giving 0 no matter what voltage is applied) and haven&#x27;t been able to find a solution in days. I feel guilty continuing to charge for the many, many hours of investigation without producing anything....it&#x27;s just making me feel incompetent and thieving.<p>Has this ever happened to you, and if so how did you handle it? Do you keep charging, or work for free, or just tell them &quot;sorry, you have to hire someone else to complete this, I just don&#x27;t know why this is happening&quot; ?
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