HardLabs

RS485LP

belenseptian·RS485LP·pcb/rs485-lowpower.kicad_pcb

RS485LP PCB layout, top view — open source board by belenseptian

About the RS485LP PCB

RS485LP is an open source PCB design by belenseptian, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 45.4 × 31.7 mm, with 17 components from 12 distinct parts.

Other key parts include the MAX485CSA+T and ID000015. By type, the board carries 8 resistors, 3 ICs, 2 capacitors and 1 LED.

It belongs with the sensors and power & battery designs in this gallery.

From the project

RS-485LP is an open-source RS485 converter featuring a custom PCB and optimized PlatformIO firmware. It is designed to minimize power consumption for battery-operated sensors and remote monitoring systems.

[](https://www.gnu.org/licenses/gpl-3.0) [](https://platformio.org/)

RS-485LP is an open-source RS485 converter featuring a custom PCB and optimized PlatformIO firmware. It is designed to minimize power consumption for battery-operated sensors and remote monitoring systems.

🔗 Official Project Website: https://belenseptian.github.io/RS485LP/

Sleep & Shutdown Optimization: Optimized for deep-sleep and hardware shutdown modes to achieve micro-amp current draw during periods of inactivity. RS485 Protocol: Reliable differential signaling for long-range data transmission. PlatformIO Integrated…

RS485LP, from the project README
From the project README

Main components on the RS485LP

MAX485CSA+TID000015

RS485LP bill of materials (BOM)

17 components, 12 distinct parts.

QtyPartRefs
1
—
MCU0
1
MAX485CSA+T
U4
1
ID000015
U$1
1
282837-4
RS485-UGMLPV1.0
2
VAC
UNK3.3V0, UNK5V0
1
—
LED1
1
10u
C8
1
0.1u
C9
1
1k
R1
1
120
R2
4
10k
R3, R4, R5, R6
2
20k
R7, R8

RS485LP design files

The KiCad project lives in the belenseptian/RS485LP repository on GitHub; these links point at the commit this page was built from.

RS485LP: common questions

How big is the RS485LP PCB?

The RS485LP measures 45.4 × 31.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RS485LP?

17 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the RS485LP design files?

From the belenseptian/RS485LP repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the RS485LP design in my own project?

Yes, under the terms of its GPL-3.0 license, which belenseptian chose for the repository.

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