It's possible to create a manual Feed or Speed override. To use this feature you need at least firmware version v0.5. The override input is controlled via an analog value. This analog value is made by using a potentiometer, below an image of a potetionmeter. This is in fact one big resistor whoses value can be changed by turning it.

The value of this potentiometer can be between 4k7 to 10k ohm.

The first step is connecting the potentiometer to the UIO-10. It's important to notice two facts:

1. The feed override and speed override have dedicated inputs
2. The input voltage needs to be 0 and 3.3V.

For this purpose, there is a 3,3V power supply available on the board. The image below shows how to connect a potentiometer to operate as a feed override.



The final step is setting up the software. For the example below software version, 4.03.59 was used.

To start the setup go to the setup tab, set Feed and/or Speed override inputs to "UI" since only one override source can be used.

Then, proceed to page 2 and click on the 'UIO-10' button.

The analog inputs that can be used are Feed and Speed override are 14 and 15, respectively. Please configure the inputs in order to enable the feature.

After inputs are configured, test mode can be entered by pressing "Set test-mode ON". Then the values of the analog inputs are displayed.

And of course, the result can be seen as the Speed and Feed override values:

On above images, the potentiometers are set to low values, so the resulting override value is 0%.