# Analog-digital converters

## ADC 3.3V connector pinout 

| Pin | Signal   | Voltage |
| --- | -------- | ------- |
| 1   | VCC      | +5.0V   |
| 2   | ADC IN 1 | +3.3V   |
| 3   | GND      | GND     |
| 4   | ADC IN 2 | +3.3V   |
| 5   | GND      | GND     |

## ADC 6.6V connector pinout

| Pin | Signal   | Voltage |
| --- | -------- | ------- |
| 1   | VCC      | +5.0V   |
| 2   | ADC IN 3 | +6.6V   |
| 3   | GND      | GND     |

## RDDRONE-FMUK66 Rev. C schematic

![](https://1329960936-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L9GLtb-Tz_XaKbQu-Al%2F-LVsC1W9Lh4_z_Pu846c%2F-LVsDVY5yBFo_ljJ6yTy%2FC-ADC.png?alt=media\&token=7f722649-f102-422b-9c5d-d890d1b8c66a)

## RDDRONE-FMUK66 Rev. B schematic

{% hint style="danger" %}
Rev. B (and older boards) are **not supported** anymore. This information is left for reference.
{% endhint %}

![](https://1329960936-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L9GLtb-Tz_XaKbQu-Al%2F-LOrvCVzlhjwif35PmiG%2F-LOru00zKEjX1fWezYBY%2FADC.PNG?alt=media\&token=bd2804e3-06fa-498a-b11a-7a67dee78b27)