Hardware-Guide.md

General information on hardware

The following hardware is compatible with openLRSng:

• Flytron M2/M3 TX / OrangeRX UHF TX
• Flytron RX v2 / OrangeRX UHF RX / HawkEye RX
• openLRSngTX (and its derivatives) / HawkEye TX
• DTFUHF 4ch RX
• DTFUHF DeluxeTX

(list incomplete, see Table of supported hardware).
All TX/RXs above are compatible with each other as well.

Note that some RXs can also be used as TXs with some additional hardware setup.

General information on inputs / outputs

Servo channel outputs

Servo PWM outputs can be mapped to any port. The DTF UHF 4-channel receiver has 6 such ports and the Hobbyking/Flytron RX has 13 such ports. The "extra" ports are the TX/RX and SDA/SCL pins. RC channels can be reused: for example, you may have RC channel 1 output on two different pins at the same time.

Special outputs

Other port configurations can only be mapped to one pin. These outputs include: High-frequency RSSI and LBEEP; serial TX and RX; i2c signals (SDA and SCL); and PPM. Similarly, analogue inputs can only be enabled on specific pins. Receivers

DTF UHF 4-channel

Version 2 and newer RXs also have the RSSI filter onboard, to filter High-Frequency RSSI into 0-3.3V RSSI. Enable the filter by soldering these two pads together:

Hawkeye / Hobbyking / Flytron 9-channel

Note on Hawkeye 6ch/9ch ICSP pins

Hawkeye 6ch/9ch receivers have non-standard ICSP pinout.