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Elrs receiver

Prateek-elec·elrs-receiver-pcb·hardware/kicad/elrs_reciver_2.kicad_pcb

Elrs receiver PCB layout, top view — open source ESP8266 board by Prateek-elec
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About the Elrs receiver PCB

Elrs receiver is an open source ESP8266 PCB design by Prateek-elec, published on GitHub under the MIT license. It is a 4-layer board measuring 16.5 × 12 mm, with 20 components from 20 distinct parts.

Its main chip is the ESP8285, from the ESP8266 family. Other key parts include the MIC5219-3.3YM5 and SX1280IMLTRT. By type, the board carries 9 capacitors, 3 ICs, 3 resistors, 1 crystal, 1 connector and 1 switch.

It belongs with the rf & radio and iot & wireless designs in this gallery.

From the project

Custom ELRS receiver PCB (ESP8285) + SX1280) designed in KiCad with RF matching, 3.3V regulation and compact layout.

A compact ExpressLRS (ELRS) receiver hardware design built around ESP8285 and the SX1280 LoRa transceiver. This repository contains the full KiCad schematic and PCB layout, along with documentation and renders.

Main components on the Elrs receiver

MIC5219-3.3YM5ESP8285SX1280IMLTRT

Elrs receiver bill of materials (BOM)

20 components, 20 distinct parts.

QtyPartRefs
1
MIC5219-3.3YM5
U1
1
ESP8285
U2
1
SX1280IMLTRT
U3
1
52MHz
Y1
1
Conn_Coaxial_Small
J1
1
SW_Push
SW1
1
LED
D1
1
3.9nH
L1
1
2.2uF
C1
1
470pF
C2
1
10nF
C3
1
100nF
C4
1
470nF
C5
1
2pH
C6
1
4.7uF
C7
1
0.1uF
C11
1
10uF
C12
1
10K
R1
1
4.7K
R2
1
2.2K
R3

Elrs receiver design files

The KiCad project lives in the Prateek-elec/elrs-receiver-pcb repository on GitHub; these links point at the commit this page was built from.

Elrs receiver: common questions

What microcontroller does the Elrs receiver use?

The Elrs receiver is built around the ESP8285, from the ESP8266 family.

How big is the Elrs receiver PCB?

The Elrs receiver measures 16.5 × 12 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Elrs receiver?

20 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the Elrs receiver design files?

From the Prateek-elec/elrs-receiver-pcb repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Elrs receiver design in my own project?

Yes, under the terms of its MIT license, which Prateek-elec chose for the repository.

Can I test firmware for the Elrs receiver without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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