ELRS Micro TX Module
Regular price $49.99 USDBETAFPV Micro RF TX module is based on the ExpressLRS project, an open-source RC link for RC applications. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. This makes ExpressLRS one of the fastest RC links available while still offering long-range performance.
A ton of ExpressLRS items are available now!
The ELRS Micro TX Module Case and Fan are released now! Upgraded module case with 6.5*13.5mm USB port housing is compatible with most USB Type-C cables. Moreover, there are two colors in the new module case. You can make your own module easily.
Specification
- Item: ELRS Micro TX Module
- Input voltage: 5V~12V
- XT30 port: 5V~12V, recommend 2S(8.4V) battery, DO NOT support 3S(12.6V) or above
- USB port: Type-C
| 2.4GHz 1W |
2.4GHz 500mW |
915/868 MHz 500mW |
|
|
Packet refresh rate |
50Hz, 150Hz, 250Hz, 500Hz |
50Hz, 150Hz, 250Hz, 500Hz |
25Hz, 50Hz, 100Hz, 200Hz |
|
RF output power |
25mW, 50mW, 250mW, 500mW, 1W |
25mW, 50mW, 250mW, 500mW |
100mW, 250mW, 500mW |
|
Frequency bands |
2.4GHz ISM |
2.4GHz ISM |
915MHz FCC 868MHz EU |
| Heat sink | Included | Not included |
Not included |
| Backpack Function | Support |
Not support currently | Not support currently |
ELRS 2.4G 1W Version
The black version with maximum 1W RF output power is released now. Support all 5D button dimensions based on BETAFPV ELRS V2.0.0 firmware. A new backpack function is added, allowing wireless communication between ExpressLRS, and other FPV related devices for command and control, or for querying config.
Note: Please make sure the VRX also supports backpack function when using the module VRX-backpack function. Backpack function will be added to the 500mW version in the future.
Compared with 500mW versions, it not only builds in a cooling fan but also the heat sink is included, which enhances the performance of cooling. So this module can work properly in daily use and not need to worry about temperature.
Note: About the temperature test, please read the article ELRS Micro Module Temperature.
1W Limited Edition
Apart from the classical case for the micro TX module, a limited edition will be released together. Both classical case and limited case versions have the same function. The 3D-printed case with new appearance design makes the module very cool when LED light flashing. Limited stock, first come first serve!
Diagram
BETAFPV Micro RF TX module is compatible with radio transmitter which has the micro module bay (AKA JR/SLIM module bay, e.g. Frsky Taranis X9D, TBS Mambo). Below is the diagram for the 500mW version module.
Below is the diagram for ELRS 2.4G 1W version. DIP switches will be added to 500mW versions in the future.
Note: Please assemble the antenna before power on. Otherwise, the PA chip in the Micro TX module will be damaged permanently.
Note: Please DO NOT use 3S or above battery to power up the TX module via XT30 port. Otherwise, the power supply chip in the TX module will be damaged permanently.
Note: Please do not turn on all DIP switches at the same time. You can refer to the chart to know about DIP switches on/off based on different uses.
| 1-2 DIP switches |
3-4 DIP switches | 5-6-7 DIP switches | |
| Update Firmware | ON | OFF | OFF |
| Operating Mode | OFF | ON | OFF |
| Update Backpack | OFF | OFF | ON |
About the Firmware
The ExpressLRS official project on Github does NOT support the OLED function for the moment. BETAFPV team will work with the ELRS team and make the official repository support the OLED and button function ASAP.
BETAFPV Micro TX Module ELRS V2.0.0 firmware is published. The firmware does not include the Binding Phrase. So please make sure the receiver works on officially major release V2.0.0 protocol and no Binding Phrase set.
- Support 5D buttons and the OLED menu with the official ELRS 2.0.0 release.
- The color of the LED changes automatically according to the system status.
- Other new and various features are fully synchronized with the official ELRS 2.0.0.
- When entering OLED menus page with long pressing, the connection between RF TX module and receiver works normally. Please do not change the Pkt Rate, otherwise, you must re-power the receiver.
https://github.com/BETAFPV/ExpressLRS
User manual of How to Flash Firmware of ELRS RX/TX.
Note: Now the firmware version of it manufactured by our company is ELRS 3.3.0. Click to download the firmware of the ELRS Micro TX Module(V3.3.0 Version).
You could all use the ELRS official firmware V2.0-RC2 now, but lost the function of OLED and Joystick. We will work with the ELRS dev team and make the ELRS official firmware support the full function of the Micro TX Module. For the milestone, OLED will be supported in the V2.1 officially.
https://github.com/ExpressLRS/ExpressLRS
How do I set a binding phrase on this Micro TX module when the ELRS official mainstream does not support OLED yet?
First, download the source code of master-betafpv-oled-menu branch to local from Github.
Second, open the ExpressLRS Configurator and load the upzip source code from local. Select the target device "BETAFPV 900/2400 TX Micro". Now, you could setup your own binding phrase and other options as normal.
Third, build & flash.
Know More About ExpressLRS
ExpressLRS is an open-source RC link for RC applications. Everyone could find this project on Github or join the discussion in Facebook Group.
ExpressLRS is based on Semtech Lora SX127x or SX1280 hardware for RX and TX respectively. it aims to achieve the best possible link performance in both speeds, latency, and range. At 900 MHz a maximum of 200 Hz packet rate is supported. At 2.4 GHz a blistering 500Hz is currently supported with a custom OpenTX build. This makes ExpressLRS one of the fastest RC links available while still offering long-range performance.
More and more vendors start to support the ExpressLRS radio protocol in different parts, like radio transmitter with ELRS in stock, drone with built-in ELRS receiver, ELRS TX module for JR bay, or Nano bay. BETAFPV team take part in this project and provide a series of ExpressLRS components.
Backpack Function
Some of the ExpressLRS TX modules include an additional ESP8285 chip, which lets us communicate wirelessly with other ESP8285 enabled devices using a protocol called espnow. We call this chip the "TX-Backpack". The aim of the TX-Backpack is to allow wireless communication between ExpressLRS, and other FPV related devices for command and control, or for querying config.
https://github.com/ExpressLRS/Backpack/wiki
Button and OLED
The ELRS TX module could be configured via the OpenTX LUA script. With OLED and button, no-OpenTX radio controller that supports CRSF could use this ELRS Micro module easily. The following no-OpenTX radio controllers work well with this TX module. Futaba T16IZ, T16SZ and T18SZ (with update to 3.9e), Wsky ET16, Radiolink AT9S Pro.
Note: All 5D button dimensions are available on BETAFPV ELRS V2.0.0 firmware. Please upgrade the firmware for new supports.
Below is the basic operation of the button and OLED for V1.0.0 firmware.
Long Press:
In the lock screen page, long press to unlock and enter the menu page.
In the menu page, long press to change the value of this row.
Short Press:
In the lock screen page, short press invalidly.
In the menu page, short press to move to the next row.
Note: When the RF TX module is entering menus page, the connection between RF TX module and receiver will be lost, the connection will recover after exiting menus page automatically; you must re-power the receiver if you have changed the Pkt Rate.
Note: When the RF TX module enters WIFI Upgrade status, the button will be invalid. Please re-power the RF TX module after firmware update via WIFI.
Below is the basic operation of the button and OLED for BETAFPV ELRS V2.0.0 firmware.
Long Press: Unlock and enter the menu page, or apply current settings in the menu page.
Up/Down: Move to the last/next row.
Left/Right: Change the value of this row.
Short Press: Enable binding status or WiFi upgrade status.
Note: You must re-power the receiver if you have changed the Pkt Rate.
Note: When the RF TX module enters WIFI Upgrade status, the button will be invalid. Please re-power the RF TX module after firmware update via WIFI.
Basic Configuration
ExpressLRS uses the Crossfire serial protocol (AKA CRSF protocol) to communicate between the radio transmitter and the TX module. So make sure your radio transmitter supports the CRSF serial protocol. We use the radio transmitter with the OpenTX system to show how to set up the CRSF protocol and LUA script. To set this up, in the OpenTX system, enter into model settings, and on the "MODEL SETUP" tab, turn off the "Internal RF". Next, enable "External RF" and select "CRSF" as the protocol.
ExpressLRS use the OpenTX LUA script to control the TX module, like bind or setup. With the LUA script, pilots could check, and set up some configurations of the Nano RF TX module. For more details, please check the Support Page.
- Save the ELRS.lua/ELRSV2.lua script files onto the radio transmitter's SD Card in the Scripts/Tools folder;
- Long press the "SYS" button (for RadioMaster T16 or similar radios) or the "Menu" button (for Frsky Taranis X9D or similar radios) to access the Tools Menu where you can find ELRS/ELRSV2.lua script ready to run with only one click;
- Below image shows the LUA script run successfully;
ELRS.lua script
ELRSV2.lua script
Bind & Output Power
The Micro RF TX module comes with officially major release V1.1.0 or V2.0.0 protocol and no Binding Phrase included. So please make sure the receiver works on officially major release V1.0.0~V1.1.0 or V2.0.0 protocol. And no Binding Phrase set. Micro RF TX module could enter binding status via ELRS.lua or ELRSV2.lua script, as described in "LUA Script" chapter. Besides, using the button and OLED, move to the BIND position and long-press the button. Short press the button if it is V2.0.0. Then the RF module will enter binding status.
ELRS.lua script
Note: The LED will NOT flash when entering binding status. The module will exit from binding status 5 seconds later auto. Short and consecutive press 3 times to bind.
ELRSV2.lua script
Note: The LED will NOT flash when entering binding status. The module will exit from binding status 5 seconds later automatically.
Note: If you reflash firmware of the RF TX module with your own Binding Phrase, please make sure the receiver has the same Binding Phrase. The RF TX module and the receiver will bind automatically in this situation.
Micro RF TX module could switch the output power via ELRS.lua or ELRSV2.lua script, as described in "LUA Script" chapter. Besides, using the button and OLED, move to the Output position. Switch the output power by long-pressing the button (ELRS.lua script). Pushing the button left or right (ELRSV2.lua script).
ELRS.lua script
Note: The RGB LED will NOT change according to the output power. When the output power is 250mW or above, the fan will spin automatically. The Micro RF TX module does NOT support 1W or 2W output. When switching to this value, the system will move to 500mW automatically.
ELRSV2.lua script
Note: The RGB LED will NOT change according to the output power. When the output power is threshold value(default 250mW) or above, the fan will spin automatically.
FAQ
- BETAFPV ELRS Micro TX module user manual download.
- Download the latest firmware for Micro TX Module 500mW and 1W versions.
Package
- 1 * BETAFPV ELRS Micro TX module
- 1 * BETAFPV Moxon antenna (2.4G, 915MHz or 868MHz)
- 1 * Monopole antenna
- 1 * Micro TX module user manual
- 1 * Spare USB data cable (Type-A to Type-C)
Note: ELRS Micro TX Module 915MHz or 868MHz version excludes the Monopole antenna. The Moxon antenna black or white will be shipped randomly.
Betafpv.com offers a (30) day manufacture defect warranty, starting from the date the product(s) was delivered to the customer. If more than 30 days have passed since receiving your purchase, unfortunately we can’t offer you a refund or exchange.
For merchandise was confirmed as genuinely defective（Product Design problem & Quality issues）, we will ship out a replacement free of charge directly. The consumer will not be charged any fees for approved warranty service.
In almost all cases, we will work with you to debug your issue firstly.
Each claim should have all proof of defect by mean of photo or video showing clearly the defect of the product. Please create a ticket to send us photos or video of your product, a detailed description of your issue, and a description of what you have already done to fix it. We are happy to solve any problem you may meet.
NOTE: The refund amount is limited to the purchase price of the item.
Directly Send Ticket: Create a new ticket
*We do not accept ALL kinds of returns.
*All sales are final.
1.Shipping Time and Rules
1.1 Estimated Shipping Time
Expedited Shipping: 3-7 working days
Standard Shipping (Registered Mail): 12-30 working days
Please note:
- There are estimated delivery time only, so BETAFPV can not guarantee an exact delivery time.
- The estimated delivery time may be longer if any battery is included in your order.
- If an item is out of stock, typically it takes 1-2 or more weeks to ship.
- Incorrect information that objects to the below 1.5 Address Information Requirement may result in unsuccessful delivery and delays in receiving your package.
1.2 Track Package
After the order is shipped, you will receive a notification email containing the tracking number (you need to register BETAFPV website when placing the order).
Or log in to your BETAFPV account and look at your order history which will show if it was shipped and provide a tracking link, if available, given your selected shipping methods. If your order status shows shipped but you do not see tracking that means your order is packaged and will be shipped shortly. If your status is processing it means that we have received your order and will be shipping as soon as possible.
You can also enter the tracking number to check your package shipment status below. Please contact BETAFPV customer support for help if you are not able to track it.
1.3 Batteries Shipping
Some countries or remote regions are forbidden to ship stand-alone batteries due to restricted Customs rules.
We will notify you if we are unable to ship batteries to your location. For expedited shipping like DHL, stand-alone batteries are prohibited to be shipped.Devices packed with less than or equal to two batteries like drones are available to be shipped. Devices in which Batteries contained like transmitters or goggles are accepted to be shipped without limits.
Battery Type Definitions
- Stand-alone: Package ONLY contains batteries or cells; NO equipment
- Packed with: Package contains equipment + cells or batteries that are NOT installed in the equipment. For example, BNF drones with batteries or RTF drone kits.
- Contained in: Package has lithium batteries contained in equipment (properly installed in the equipment they are intended to operate). For example, radio transmitter or goggles.
1.4 List of Countries or Region That Prohibit From Importing Drones or Batteries
Choosing standard shipping will be restricted.
Asia: India, Indonesia, Malaysia, Vietnam, Philippines, Pakistan, Oman
Africa: South Africa
Region(Prohibit batteries): Hawaii, Puerto Rico, APO/FPO
Note: It will be available for drones shipment if you would like to choose expedited shipping like DHL.
1.5 Address Information Requirement
For orders from below countries or regions below, address information has specially required. Please carefully read the following information. Incorrect information may result in unsuccessful delivery and delays in receiving your package.
Special Regions: Orders with military or government addresses in Russia and Ukraine cannot be shipped. We reserve right to cancel the order and provide a full refund.
Ukraine: Due to logistical restrictions, we are currently unable to ship any drones including any FPV Kits to Ukraine while batteries, frames, and other accessories can still be shipped.
If you wish to purchase drones or kits, we apologize for the inconvenience and recommend either waiting for updates on shipping or removing the drones or kits in your order, or you could also considering purchasing from our authorized agent in Ukraine (https://rc-store.com.ua)
Germany: Please ensure that the street address and house number information is provided in full. Omissions are not allowed.
Japan: Please provide the full street address and house number information. Abbreviations with only numbers are not permitted.
Australia: Please provide the correct postal code that matches the city, and ensure that the city name is written correctly without any omissions or abbreviations. Search postcodes for all suburbs and locations around Australia here. (https://auspost.com.au/postcode)
Hong Kong or Macao: Please fill address and name in Chinese (traditional).
Taiwan: Please fill address and name in Chinese (traditional), and provide personal ID number due to Customs requirement.
South Korea: Please provide personal clearance code. You can apply for it from the below link if you do not have one. https://unipass.customs.go.kr/csp/index.do
Brazil: Please provide your tax number (CPF) in your address.
Chile: Please provide your individual tax number in your address.
India: Please provide your Adhaar Card/Pan Card/KYC number in your address. Provide tax number if you place order as company.
PO Boxes/APO/FPO Addresses: Shipments to PO Boxes, APO, FPO may be declined.
1.6 BETAFPV Assume No Responsibility For Delayed Or Rejected Orders Due To The Following Reasons
- Shipping time might be delayed for 3-7 days for transportation to remote regions. It might be 7 days longer if ships to islands area like Hawaii, Puerto Rico, Canary Islands etc.
- Delay or delivery failure because of the consignee’s actions. These actions include, but are not limited to: changing the address after shipment, entering an unknown address or wrong address, entering incorrect contact information, and refusing to receive, etc.
- Delay due to force majeure. “Force majeure” means an unforeseen, inevitable, or insurmountable objective situation and other objective conditions that cause delayed shipping, including, but not limited to: national or regional air or ground transportation system controls or interruptions (e.g., weather reasons), communication system interference or malfunction, government actions, postal administration policy changes, wars, earthquakes, typhoons, floods, fires, heavy rain, heavy fog, and other similar events.
- Mail and packages cannot be delivered to the consignee’s address during weekends, national holidays, and festivals.
- The consignee address is a school, hotel, unit, or residential community where the courier has no access. Please provide a permanent street address.
*Please confirm your address before payment. If you enter the wrong address, please contact BETAFPV customer support in a timely manner.
2.Shipping Method and Fee
2.1 Standard Shipping
We offer free standard shipping on orders of $99.99 or more. If your order does not qualify for free shipping, the shipping fee will be charged $5 on orders of $20 - $99.98; charged $10 on orders of less than $20. (Shipping fee will be different when delivering to remote countries/regions.)
Products with big volume are excluded from free shipping rule due to dimensional weight calculated by shipping company.
The product collections list is as follows:
- FPV Goggles
- BETAFPV Gates & Flags
- RTF FPV Whoop Kits
- LiteRadio Series radio transmitter
- Radio Transmitter & Drone Storage Cases
2.2 Expedited Shipping
We offer expedited shipping service worldwide including islands area. The shipping fee will be shown on the check-out page once the expedited shipping method is chosen.
Note: Purchasers are responsible for customs duties, taxes, customs clearance and other costs incurred when choosing expedited shipping.
2.3 Additional Shipping Fee
There are certain situations where you may be required to pay extra shipping fees.
Expedited Shipping with Batteries: When choosing expedited shipping and placing an order that includes more than 2 batteries, which unfollows the 1.3 Batteries Shipping policy, an extra shipping fee will be applied to cover the separate shipping of the batteries.
Reshipping Costs: Packages returned due to incorrect customer-provided addresses or the customs clearance cannot be completed due to customer-related issues, need to be reshipped will be subject to an additional shipping charge.
3.FAQ
3.1 How long until my order ships?
All orders will be processed within 1-2 working days after your payment.
If we are experiencing a high volume of orders or some products on back order, shipments may be delayed by a few days.
If there will be a significant delay in the shipment of your order, we will contact you via email. Please make sure your email address is available and remember to check the email for the notification.
3.2 After I place an order, how do I change my order before shipment?
The nation cannot be changed once an order has been placed. If you need to change these details, please cancel the order and purchase again. Please contact BETAFPV customer support in 24 hours after placing the order if you need to change order product information or address.
3.3 How do I cancel after I have placed the order, but it has not shipped?
You can contact BETAFPV customer support for canceling if your order has not been shipped. If your order has been shipped less than 24 hours, please contact the customer service to help. We will try to hold your order from the shipping company.
It is impossible to cancel if your order has been shipped over 24 hours.
3.4 Under what circumstances will BETAFPV cancel an order unilaterally?
Product(s) unavailable currently, BETAFPV tries to contact customers and does not get a reply in 7 days.
High-Risk Order(s) identified by Credit Card bank or Paypal. To ensure your card safety, we will cancel your order.
No Shipping Methods. If we are not able to ship to your location, Your order will be canceled.
*The right of final interpretation of the shipping policy resides with BETAFPV
*Policy information updated Feb 2024
