Judging by the +5V regulator next to it Vedder is using the same low side resistor (10kΩ) and is only using an E12/24 resistor pack so 33kΩ is close enough to +3V3. +4% error?
I guess it'll have a slight effect on any analogue read values but that's easily fixed in software.
It is odd that he's gone for a E96 resistor on the +5V high side but not done similarly for the +3V3 that would get you a 31.6kΩ which brings the output to +3.328V, a +0.8% error
Unfortunately as the hardware is a closed source project we can't apply any bug fixes.
The config file specifies it as 3.4v so it doesn't make any difference other than being higher than other boards. Can't remember the max voltage on the stm32 power.
I have the same question. From the MCP16311 datasheet, it looks like VCC is set for 3.44V.
Is there a reason for this specific voltage, instead of say 3.3V?
Judging by the +5V regulator next to it Vedder is using the same low side resistor (10kΩ) and is only using an E12/24 resistor pack so 33kΩ is close enough to +3V3. +4% error?
I guess it'll have a slight effect on any analogue read values but that's easily fixed in software.
It is odd that he's gone for a E96 resistor on the +5V high side but not done similarly for the +3V3 that would get you a 31.6kΩ which brings the output to +3.328V, a +0.8% error
Unfortunately as the hardware is a closed source project we can't apply any bug fixes.
The config file specifies it as 3.4v so it doesn't make any difference other than being higher than other boards. Can't remember the max voltage on the stm32 power.