incutec-OpenRX/docs/competitor-rx-catalog.md

ELRS ESP32-C3 Receiver Competitor Catalog

Source: https://artifactory.expresslrs.org/ExpressLRS/hardware.zip (the artifact the Configurator pulls). Snapshot taken 2026-04-30.

Total ESP32-C3 RX SKUs shipped to end users: 55

Categorized by RF architecture so each OpenRX SKU has direct apples-to-apples comparison.

---

Gemini-class — C3 + dual LR1121 (Xrossband)

OpenRX equivalent: OpenRX-Gemini — same architecture (2× LR1121 + 2× RFX2401C + 2× SKY13414)

Count: 10

Vendor	Product	Layout	Pin overlay	Min FW
BAYCKRC	BAYCKRC C3 900/2400 Dual Band 100mW Gemini RX	LR1121 True Diversity	—	3.5.0
BAYCKRC	BAYCKRC RRD2 2.4GHz RX	LR1121 True Diversity	—	3.5.0
BETAFPV	BETAFPV SuperX Nano RX	LR1121 True Diversity	—	3.5.0
BrotherHobby	BrotherHobby C3 900/2400 Dual Band 100mW Gemini RX	LR1121 True Diversity	—	3.5.0
DAKEFPV	DAKEFPV 2G4 SuperD Pro MAX 500mW RX	LR1121 True Diversity	—	3.5.0
DAKEFPV	DAKEFPV C3 900/2400 Dual Band 100mW Gemini RX	LR1121 True Diversity	—	3.6.0
DAKEFPV	DAKEFPV SuperD 2.4GHz RX	LR1121 True Diversity	—	3.5.0
DAKEFPV	DAKEFPV SuperD 900MHz RX	LR1121 True Diversity	—	3.5.0
GEPRC	GEPRC C3 900/2400 Gemini Xrossband RX	LR1121 True Diversity	—	3.5.2
HGLRC	HGLRC C3 900/2400 Dual Band PRO RX	LR1121 True Diversity	—	3.6.0

All 10 use Generic C3 LR1121 True Diversity pinout with zero pin deviations. Strongest reference: BETAFPV SuperX Nano (matches OpenRX-Gemini chip-for-chip).

---

Mono-class — C3 + single LR1121 (dual-band)

OpenRX equivalent: OpenRX-Mono — LR1121 + RFX2401C + SKY13414, 2.4GHz + 900MHz

Count: 24

Vendor	Product	Layout	Pin overlay	Min FW
BAYCKRC	BAYCKRC C3 900/2400 Dual Band 100mw 6PWM RX	LR1121 PWM	—	3.5.0
BAYCKRC	BAYCKRC C3 900/2400 Dual Band Nano RX	LR1121	—	3.5.0
BAYCKRC	BAYCKRC RR2 2.4GHz RX	LR1121	serial1_rx=18, serial1_tx=19	3.5.0
BAYCKRC	BAYCKRC UR100 Dual Band RX	LR1121	serial1_rx=18, serial1_tx=19	3.5.0
BAYCKRC	BAYCKRC UR1000 Dual Band RX	LR1121	serial1_rx=18, serial1_tx=19	3.5.0
BAYCKRC	BAYCKRC UR500 Dual Band RX	LR1121	serial1_rx=18, serial1_tx=19	3.5.0
BETAFPV	BETAFPV SuperX Mono RX	LR1121	radio_nss=0, led_rgb=19	3.5.0
DAKEFPV	DAKEFPV 1W 2.4GHz RX	LR1121	—	3.5.0
DAKEFPV	DAKEFPV 500mW 2.4GHz RX	LR1121	—	3.5.0
DAKEFPV	DAKEFPV 500mW 900MHz RX	LR1121	ant_ctrl=10	3.5.0
DAKEFPV	DAKEFPV 900MHz MAX 1000mW Diversity RX	LR1121	ant_ctrl=10	3.6.0
DAKEFPV	DAKEFPV 900MHz NANOPRO MAX 500mW RX	LR1121	—	3.6.0
DAKEFPV	DAKEFPV Nano 2.4GHz RX	LR1121	—	3.5.0
DAKEFPV	DAKEFPV Nano 900MHz RX	LR1121	—	3.5.0
GEPRC	GEPRC 900/2400 Single Dual-Band RX	LR1121	—	3.5.2
HGLRC	HGLRC C3 900/2400 Dual Band Nano RX	LR1121	—	3.6.0
RadioMaster	RadioMaster XR1 Dual Band RX	LR1121	serial1_rx=18, serial1_tx=19	3.5.0
RadioMaster	RadioMaster XR2 2.4GHz RX	LR1121	serial1_rx=18, serial1_tx=19, led=8, led_rgb=-1	3.5.0
RadioMaster	RadioMaster XR3 Dual Band Diversity RX	LR1121	serial1_rx=18, serial1_tx=19, ant_ctrl=10	3.5.0
Spedix	Spedix 900MHz RX	LR1121	radio_nss=0, led=19, led_rgb=-1	3.5.0
Spedix	Spedix Dual Band RX	LR1121	radio_nss=0, led_rgb=19	3.5.0
Sub250	Sub250 900/2400 Single Dual-Band RX	LR1121	—	3.5.2
THOBBY	THOBBY 900MHz RX	LR1121	radio_nss=0, led=19, led_rgb=-1	3.5.0
THOBBY	THOBBY Dual Band RX	LR1121	radio_nss=0, led_rgb=19	3.5.0

All 24 share the Generic C3 LR1121 SPI/UART/RST/BUSY/DIO1 core. Common deviations:

• serial1_rx=18, serial1_tx=19 — adds second UART on FE control pins (BAYCKRC, RadioMaster)
• radio_nss=0, led_rgb=19 — diversity-style NSS+LED swap (BETAFPV, Spedix, THOBBY)
• ant_ctrl=10 — SPDT antenna switch control (DAKEFPV, RadioMaster XR3)

---

Lite-class with FE — C3 + SX1280/SX1281 + PA (Generic C3 2400 PA)

OpenRX equivalent: OpenRX-Lite (UFL+amp variant) — only if you add the FE; current Lite has no FE

Count: 8

Vendor	Product	Layout	Pin overlay	Min FW
DeepSpace	DEEPSPACE 2.4GHz Nano 100mw RX	2400 PA	—	3.5.0
NewBeeDrone	NewBeeDrone Diversity 2.4Ghz RX V2	2400 PA	power_rxen=-1, ant_ctrl=18	3.5.0
ORBIT	ORBIT 2.4Ghz Nano RX	2400 PA	—	3.5.0
Oxbot	Oxbot 2.4GHz RX	2400 PA	—	3.5.0
SkyGuy	SkyGuy Max 2.4GHz RX	2400 PA	—	3.5.0
SkyGuy	SkyGuy Nano 2.4GHz RX	2400 PA	—	3.5.0
SpeedyBee	Speedybee AIO 2.4Ghz RX	2400 PA	—	3.5.0
TuneRC	TuneRC 2.4G nano PA RX	2400 PA	—	3.5.0

---

Lite-class no FE — C3 + SX1280/SX1281 bare (Generic C3 2400)

OpenRX equivalent: OpenRX-Lite (ceramic + UFL) — direct match

Count: 7

Vendor	Product	Layout	Pin overlay	Min FW
BotLabDynamics	BotLabDynamics BotLink1 2.4GHz RX	2400	led_rgb=-1, led=8	3.5.0
Flycolor	Flycolor 2.4GHz Nano RX	2400	—	3.5.0
HDZero	HDZero 2.4GHz AIO RX	2400	—	3.5.0
NewBeeDrone	NewBeeDrone 2.4Ghz RaceSpec RX	2400	—	3.5.0
OMPHOBBY	OMPHOBBY OFS3+ 2.4 GHz RX	2400	—	3.5.0
Spedix	Spedix 2.4GHz RX	2400	led_rgb=-1, led=19	3.5.0
THOBBY	THOBBY 2.4GHz RX	2400	led_rgb=-1, led=19	3.5.0

---

Lite-class True Diversity — C3 + 2× SX1281 (Generic C3 2400 True Diversity)

Count: 3

Vendor	Product	Layout	Pin overlay	Min FW
BAYCKRC	BAYCKRC RRD1 2.4GHz RX	2400 True Diversity	—	3.5.0
GEPRC	GEPRC Nano True Diversity 2.4GHz RX	2400 True Diversity	—	3.5.0
HDZero	HDZero Halo FC 2.4GHz Gemini RX	2400 True Diversity	led_rgb=-1, led=19	3.5.0

---

Lite-class with PWM — C3 + SX1281 + PWM outputs (Generic C3 2400 PWM)

Count: 2

Vendor	Product	Layout	Pin overlay	Min FW
BAYCKRC	BAYCKRC C3 2.4Ghz 6PWM 10mw RX	2400 PWM	—	3.5.0
Jumper	Jumper AION P6 2.4GHz RX	2400 PWM	—	3.5.0

---

Convention summary

• No vendor ships a wholly custom C3 hardware.json file. All 54 products reference one of 8 Generic C3 layouts and customize via the overlay mechanism in targets.json.
• Generic vendor entries are stripped from the shipped artifact — end users cannot select Generic targets. The Generic JSONs serve as base layouts only.
• For OpenRX: ship our own product names in targets.json, reference the Generic C3 layouts, customize via overlay (power tables, radio_rfsw_ctrl, optional ant_ctrl/serial1).

Source verification

Pull and re-run anytime:

curl -sL https://artifactory.expresslrs.org/ExpressLRS/hardware.zip -o /tmp/elrs-hw.zip
unzip -p /tmp/elrs-hw.zip targets.json | python3 -c "import json,sys; d=json.load(sys.stdin); [print(k) for k in sorted(d.keys())]"