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LORA remote relays

motivemachine·LORA_remote_relays·hardware/v1.2/kicad/LORA_Relay_AC.kicad_pcb

LORA remote relays PCB layout, top view — open source AVR/Arduino board by motivemachine

About the LORA remote relays PCB

LORA remote relays is an open source AVR/Arduino PCB design by motivemachine, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 85.1 × 99.8 mm, with 38 components from 25 distinct parts.

Its main chip is the ArduinoNano, from the AVR/Arduino family. Other key parts include the HLK-PM01, AMS1117-3.3, Sx1278_LORA_Module and external_Sw. By type, the board carries 14 resistors, 4 ICs, 4 diodes, 4 capacitors, 2 transistors and 2 fuses.

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

From the project

AC powered relay control board using Lora radios. Turn on lights, heaters or whatever else you need at a distance. This repo is a mirror for:

AC powered relay control board using Lora radios. Turn on lights, heaters or anything else you need at a distance. The first one has been installed and running smooth for several months now! Check it out here: https://asthemillturns.serveblog.net/lora-ac-relays.html

I've broken out some extra arduino pins for integration in future projects. Starting from the upper left: The first three pins from upper-left down are 5 volts, Analog 1, and ground. This was originally used for a TMP36 analog temperature sensor. This would also work with any of the Dallas One-wire digital temperature sensors.…

LORA remote relays, from the project README
From the project README

Main components on the LORA remote relays

HLK-PM01AMS1117-3.3ArduinoNanoSx1278_LORA_Moduleexternal_Sw

LORA remote relays bill of materials (BOM)

38 components, 25 distinct parts.

QtyPartRefs
1
HLK-PM01
U1
1
AMS1117-3.3
U2
1
ArduinoNano
U3
1
Sx1278_LORA_Module
U4
1
external_Sw
A5 A4 GND
2
MMBT3904
Q2, Q3
1
IPX
J3
1
gpio
5v A7 A6 GND
2
Fuse
F1, F2
1
tmp36
GND A1 5v
1
relay1
K1
1
relay2
K2
1
SW_Push
SW1
1
SW_DIP_x04
SW2
2
LED
D1, D2
2
4001
D3, D4
1
1uf
C1
1
22uf
C2
1
.1uf
C3
1
100uf
C4
Show 5 more
QtyPartRefs
2
3k3
R1, R2
2
100
R4, R15
2
10k
R5, R16
4
1k
R7, R9, R11, R13
4
2k
R8, R10, R12, R14

LORA remote relays design files

The KiCad project lives in the motivemachine/LORA_remote_relays repository on GitHub; these links point at the commit this page was built from.

LORA remote relays: common questions

What microcontroller does the LORA remote relays use?

The LORA remote relays is built around the ArduinoNano, from the AVR/Arduino family.

How big is the LORA remote relays PCB?

The LORA remote relays measures 85.1 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the LORA remote relays?

38 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the LORA remote relays design files?

From the motivemachine/LORA_remote_relays repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the LORA remote relays design in my own project?

Yes, under the terms of its Apache-2.0 license, which motivemachine chose for the repository.

Can I test firmware for the LORA remote relays without the hardware?

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

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