2.4 GHz ELRS Module Design
Budget: $30 – $250 USD
I need a complete ExpressLRS-based 2.4 GHz solution designed from scratch, covering both the transmitter module and the matching receiver unit. This is a brand-new product, so nothing can be copied from an existing board.
Scope of work
• Electronic design: create schematics, select RF front-end, MCU, power stage, and filtering suitable for reliable 2.4 GHz operation under ELRS requirements.
• PCB layout: optimise for low noise, clean RF paths, correct impedance, and size/weight appropriate for FPV use.
• Firmware hooks: prepare pin mapping and reference code so ELRS firmware can be flashed and tested right away. Full ELRS compliance is mandatory.
• Supporting files: BOM with readily available parts, production-ready Gerbers, and a brief bring-up guide.
Key points
• Deliver both transmitter and receiver boards.
• Prior RF work or proven ELRS experience is highly valued.
• I’m looking to move fast, so please outline realistic turnaround times for schematic, layout, and first-article files.
• I will prototype in-house; rapid assistance during initial bring-up is expected.
Dimensions: Small 20*15-20
Weight: 0.7 g (RX only)
Chips: ESP8285, SX1281
Crystal Oscillator: TCXO
Frequency Band: 2.4 GHz ISM
Refresh Rate: 25 Hz – 1000 Hz
Input Voltage: 5V
Antenna Connector: IPEX1
Telemetry power 100mw
2 layer pcb if possible.
If you can take this from concept to manufacturing-ready files quickly and confidently, I’m eager to get started.
Scope of work
• Electronic design: create schematics, select RF front-end, MCU, power stage, and filtering suitable for reliable 2.4 GHz operation under ELRS requirements.
• PCB layout: optimise for low noise, clean RF paths, correct impedance, and size/weight appropriate for FPV use.
• Firmware hooks: prepare pin mapping and reference code so ELRS firmware can be flashed and tested right away. Full ELRS compliance is mandatory.
• Supporting files: BOM with readily available parts, production-ready Gerbers, and a brief bring-up guide.
Key points
• Deliver both transmitter and receiver boards.
• Prior RF work or proven ELRS experience is highly valued.
• I’m looking to move fast, so please outline realistic turnaround times for schematic, layout, and first-article files.
• I will prototype in-house; rapid assistance during initial bring-up is expected.
Dimensions: Small 20*15-20
Weight: 0.7 g (RX only)
Chips: ESP8285, SX1281
Crystal Oscillator: TCXO
Frequency Band: 2.4 GHz ISM
Refresh Rate: 25 Hz – 1000 Hz
Input Voltage: 5V
Antenna Connector: IPEX1
Telemetry power 100mw
2 layer pcb if possible.
If you can take this from concept to manufacturing-ready files quickly and confidently, I’m eager to get started.