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 The errors reported by the board are in the form of audible beeps:
 - **1 beep  (low pitch)**: Motor error (see [possible causes](https://github.com/EmanuelFeru/bldc-motor-control-FOC#diagnostics)). Are you using a [single wheel](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Parameters#single-wheel-use) ?
-- **2 beeps (low pitch)**: ADC timeout. Check possible reasons/troubleshooting tips in the wiki section for [ADC variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-ADC)
-- **3 beeps (low pitch)**: Serial communication timeout. Check possible reasons/troubleshooting tips in the wiki section for [USART variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-USART)
+- **2 beeps (low pitch)**: ADC timeout. Check possible reasons/troubleshooting tips in the wiki section for [ADC variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/toolbox-Variant-ADC)
+- **3 beeps (low pitch)**: Serial communication timeout. Check possible reasons/troubleshooting tips in the wiki section for [USART variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/toolbox-Variant-USART)
 - **4 beeps (low pitch)**: General timeout (PPM, PWM, Nunchuk). Check possible reasons/troubleshooting tips in the wiki section for [PPM variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-PPM#toolbox-troubleshooting)/[PWM variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-PWM#toolbox-troubleshooting)/[Nunchuk variant](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Variant-Nunchuk#toolbox-troubleshooting)
 - **5 beeps (low pitch)**: Mainboard temperature warning
 - **1 beep slow (medium pitch)**: Low battery voltage < 36V. More details in the [battery](https://github.com/EFeru/hoverboard-firmware-hack-FOC/wiki/Battery) section.