Frequently Asked Questions (FAQ)

Please remember: Sending SET_PIN PIN=_probe_ready VALUE=0, under no circumstances should the light on the sensor end illuminate. If the light is on/blinking, it indicates a wiring/configuration issue with the EN pin.

When USB is connected to the computer, if the light on the sensor end is constantly on/blinking, it means you haven't connected the EN pin to the motherboard control, or there is a configuration problem.

When USB is connected to the computer, the pressure value output when pressing the sensor sometimes increases and sometimes decreases: This is normal, as the sensor can detect both positive and negative pressure.

When USB is connected to the computer, the displayed current pressure value has no relation to the threshold. If the trigger pressure is too high, simply set the threshold smaller.

Serial Debugging Commands

After connecting to the FLY-Alps via serial port, you can use the following commands for debugging and configuration:

Common Commands

Command	Description	Example
set <value>	Set trigger sensitivity threshold	set 20000 (smaller value means higher sensitivity)
v	View current ADC value	Outputs ADC values before filtering (a) and after filtering (b)
uv	Disable continuous ADC value output	Stops real-time data refresh
rt	View current sensitivity setting	Returns the currently configured threshold

Usage Instructions

1. Setting Sensitivity:

   • Use the set command followed by a value, e.g., set 20000
   • A smaller value makes the sensor more sensitive and easier to trigger
   • A larger value requires greater pressure to trigger

2. Real-time ADC Value Monitoring:

   • After sending the v command, the device will continuously output ADC values
   • The output format includes data before filtering (a) and after filtering (b)
   • Send the uv command to stop continuous output

3. Viewing Current Configuration:

   • Use the rt command to view the currently set sensitivity threshold

Tip

It is recommended to test different sensitivity settings via a serial tool before actual use to find the threshold most suitable for your application scenario.