1. Kirish
The Radiomaster ER4 2.4GHz 4CH ExpressLRS (ELRS) PWM Receiver is engineered for high performance, reliability, and flexible configuration in various remote-controlled applications. Based on the revolutionary ExpressLRS system, it offers fast response speeds and ultra-long range capabilities. This receiver is designed to provide precise control and essential telemetry data for fixed-wing aircraft, RC cars, boats, and tanks.
Key features include built-in receiver voltage telemetry, flight battery telemetry with automatic voltage detection, and support for Wi-Fi updates and WEBUI configuration. Its robust design ensures durability and ease of use for enthusiasts and hobbyists.
Figure 1: Radiomaster ER4 PWM Receiver highlighting its compact design. This receiver is lightweight and small, making it suitable for various small aircraft, boats, and cars.
2. Paket tarkibi
- 1x Radiomaster ER4 2.4GHz 4CH ExpressLRS ELRS PWM Receiver
- 1x jildtage Telemetry Wire
- 1x CRSF simi
- 1x ELRS-RX-SBUS Wire
- 1x User Card
Figure 2: The Radiomaster ER4 receiver shown in its retail packaging with included wires and user card.
3. Texnik shartlar
- Model: ER4
- Chastotasi: 2.4 gigagertsli
- Kanallar: 4 PWM Channels
- Kirish hajmitage: 4.5V - 8.4V DC
- O'lchamlari: 1.85 x 1.3 x 0.58 dyuym (taxminan 30 mm x 15 mm x 5 mm)
- Og'irligi: Taxminan 2.69 gramm
- Antenna: High sensitivity 20 cm dual antenna with UFL connector
- Telemetriya: Built-in receiver voltage telemetry, flight battery telemetry (with external input)
- Konfiguratsiya: Wi-Fi updates and WEBUI konfiguratsiyasi
- Interfeys: 4-wire CRSF interface for optional telemetry sensors
Figure 3: Detailed dimensions of the Radiomaster ER4 receiver, showing its compact size for easy integration.
Figure 4: The Radiomaster ER4 receiver displayed on a digital scale, indicating its lightweight design at approximately 2.69 grams.
4. Sozlash
4.1 Qabul qilgichni ulash
The ER4 receiver features standard PWM pin headers for connecting servos and power. Ensure correct polarity when connecting power (4.5V - 8.4V DC) to the designated BAT pins.
5-rasm: Old view of the Radiomaster ER4 receiver, showing the PWM output pins (CH1-CH4) and battery input (BAT).
4.2 Antennani o'rnatish
The ER4 receiver comes with a high sensitivity 20 cm dual antenna. It connects via a UFL connector. Ensure the antenna is securely attached and positioned for optimal signal reception.
6-rasm: Yaqindan view of the UFL antenna connector on the Radiomaster ER4 receiver, next to the BOOT button.
4.3 Binding Procedure (Traditional Binding)
Anʼanaviy bogʻlash uchun bogʻlovchi ibora RXʼdagi user_definesʼda izohlanishi kerak.
- Transmitteringizni o'chiring.
- Qabul qilgichni uch marta ulang va elektrdan uzing.
- LED tez ikki marta miltillayotganiga ishonch hosil qiling, bu qabul qiluvchining ulanish rejimida ekanligini ko'rsatadi.
- Use the [BIND] button on the ExpressLRS Lua script, which sends out a binding pulse.
- If the receiver has a solid light, it's bound!
Video 1: This video demonstrates the binding process for Radiomaster ER series receivers, including the ER4. It shows the power cycling method and interaction with the transmitter's LUA script for successful binding.
5. Ishlash rejimlari va xususiyatlari
5.1 LED indikatorining ma'nolari
| Holat nuri | Ma'nosi |
|---|---|
| Sekin miltillovchi (500ms) | Transmitter kutilmoqda |
| Tez chaqnash (25ms) | Wi-Fi yoqilgan |
| Ikki marta yonish | Qabul qiluvchi ulanish rejimida |
| Uch marta miltillovchi | Qabul qiluvchining ishlashi, rejimni tanlash xatosi |
| Qattiq yorug'lik | Receiver functional (Connected) |
5.2 jildtage Telemetriya
The ER4 receiver supports built-in receiver voltage telemetry and can also provide flight battery telemetry with automatic detection of voltage input when an external battery is connected to the EXT-V port.
5.3 Wi-Fi Update and Configuration
The receiver supports Wi-Fi updates and WEBUI configuration, ensuring your receiver is always up-to-date and easily configurable. This allows for convenient firmware upgrades and parameter adjustments.
6. Xizmat ko'rsatish
- Keep the receiver clean and free from dust or debris.
- Regularly check all wire connections for secure fit and signs of wear.
- Ensure the antenna is not damaged and is positioned optimally for signal reception.
- Perform firmware updates via Wi-Fi as recommended by Radiomaster for optimal performance and new features.
7. Muammolarni bartaraf qilish; nosozliklarni TUZATISH
- Bog'lashdagi xato: Ensure your transmitter's ExpressLRS LUA script is updated and the binding phrase is correctly set or commented out on the receiver. Follow the binding procedure carefully.
- No Telemetry Data: Verify all telemetry wires are correctly connected. For external battery telemetry, ensure the battery is properly connected to the EXT-V port.
- Intervalgacha signal: Check antenna placement and ensure it is not obstructed by carbon fiber or other conductive materials. Ensure the antenna is securely connected to the UFL port.
- Receiver Not Powering On: Check power connections and ensure the input voltage is within the specified 4.5V - 8.4V range.
8. Kafolat va qo'llab-quvvatlash
For warranty claims, technical support, or further assistance, please refer to the contact information provided on the user card included in your package or visit the official Radiomaster websayt.
