- "Documentation" for Helio Spring FC's
- Spring-V1
- Spring-V2
- Spring-AIO
- Spring-Mini
- If IMUF flash went wrong, plugin USB and wait 5 full minutes for recovery and re-flash IMUF.
- If cannot enter DFU mode, temporarily short-circuit the "boot" pads while plugging in USB, it should enter DFU.
- RX and USB both use same resources -- recommend soldering RX positive to 5v rail to avoid the need to disconnect RX.
- EmuFlight flight firmware supports the HelioRC Spring FC and derivatives.