Music | FPV Drone | Reviews | Travel | MTB | DIY | Information Technology
Review of Happymodel ExpressLRS ES900TX module and ES900RX receiver with video installation instruction manual
Review of Happymodel ExpressLRS ES900TX module and ES900RX receiver with video installation instruction manual

Review of Happymodel ExpressLRS ES900TX module and ES900RX receiver with video installation instruction manual

Today, I did an open-box and quick review video of this Happymodel ExpressLRS RC radio link ES900TX module and ES900RX receiver that I purchased from Banggood.com

Close up shot of Happymodel ExpressLRS ES900TX module
What is ExressLRS?

ExpressLRS is an open source RC link for RC applications. It is a high Performance LoRa Radio Link. It is based on the fantastic semtech SX127x/SX1280 hardware combined with an ESP8285, ESP32 or STM32. ExpressLRS supports a wide range of hardware platforms as well as both 900 MHz and 2.4 GHz frequency options. ExpressLRS uses LoRa modulation as well as reduced packet size to achieve best in class range and latency compared to current commercial offerings.

ExpressLRS can run at various packet rates, up to 500hz or down to 25hz depending on your preference of range or low latency. At 900 MHz a maximum of 200 Hz packet rate is supported. At 2.4 GHz a blistering 500 Hz is currently supported with a custom openTX binary with future plans to extend this to 1000 Hz.

ExpressLRS supports telemetry as optional feature. Enabling telemetry also adds support for the betaflight lua script.

ExpressLRS can be flashed into existing FrSky R9M hardware (RX and TX), Jumper R900 RXs, SiYi FM30 Hardware (Rx and TX), GHOST hardware (RX and TX) or Custom PCBs can be made if you enjoy tinkering. Happy Model released official ExpressLRS hardware (RX and TX) and several other manufacturers are preparing to offer official ELRS hardware soon so stay tuned.

RangeVsPacketRate
Range vs. Packet rate between various radio link on the market including ExpressLRS
First Look and reasons why it is cheaper?

Ever wonder why ExpressLRS is cheaper than any other radio RC links on the markets nowadays but still manage to be on top in terms of performance. Well, at least on paper though. For the time being, the ExpressLRS specification is impressive but real world performance still have some quirks that people complaining about. But i think those quirks are mostly user error and not ExpressLRS. OK I cut to the chase and here is the open box video and quick manual installation instructions. Enjoy!

Open-box and quick review of Happymodel ExpressLRS TX and RX combo kit

I also made instruction video on how to update the latest firmware for ES900TX module and ES900RX receiver. Follow this post. https://www.thinhla.com/expresslrs-es900tx-and-es900rx-firmware-update-and-binding-instruction-in-3-easy-steps/

Where to Buy ExpressLRS?

Depending on your region, you should get a specific 900Mhz system. For instance: North America (US, CANADA, MEXICO) uses ExpressLRS 915Mhz system. For European countries, a ExpressLRS 866Mhz system is used.

ExpressLRS 2.4Ghz system is used globally.

Leave a Reply

Your email address will not be published.