Variant ADC

This variant can be used with analog inputs like potentiometers, joysticks or a throttle handle, even if using hall sensors. Here is a video walking you through how to setup the firmare to use it with a joystick.

For driving with a separate throttle and brake, please use Hovercar variant.
Voltage Control Mode is used by default for this variant.

⚙️ Configuration/Parameters

Voltage Control Mode is used by default.

• ADC_ALTERNATE_CONNECT : to swap the inputs, in case you cannot do it physically
• ADC_PROTECT_THRESH : to adjust the threshold below/above the MIN/MAX ADC values that will trigger ADC protection
• ADC_PROTECT_TIMEOUT : number of wrong / missing input commands before safety state is taken

Please also check the parameters that are common to all the variants.

🔌 Wiring:

• Connect the potentiometer/hall sensor VCC to 3.3v from programming port or from a voltage regulator, ⚠️ Red wire from sensor cable delivers 15v !!!
• Connect the output of the potentiometer/hall sensor to the blue wire (ADC1) for steering and green wire (ADC2) for speed on left sensor board cable
• Connect the potentiometer/hall sensor to ground, ⚠️ On some boards, the black wire is 15v !!! Check with a multi-meter to make sure 15V and ground are not swapped
• 100k Pull down resistors connected to ground are recommended to prevent issues when inputs are floating (wire is cut or disconnected) triggering ADC protection
• If you don’t need steering, set input1_type to 0 in order to disable the input or go through the auto-calibration procedure : #define PRI_INPUT1 0, 0, 0, 4095, 0 // TYPE, MIN, MID, MAX, DEADBAND. See INPUT FORMAT section

🎛️ Calibration:

Proceed with calibration to select the right type of inputs, for better control and proper ADC protection.

🧰 Troubleshooting:

If wheels are not spinning or you get 2 beeps, make sure you have done proper calibration.