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P44-mini lx

plan44·p44-mini-lx

P44-mini lx PCB layout, top view — open source board by plan44

About the P44-mini lx PCB

P44-mini lx is an open source PCB design by plan44, published on GitHub. It is a 2-layer board measuring 94 × 44.5 mm, with 115 components from 34 distinct parts.

Other key parts include the 74HCT125D, L78L05ACUTR, R-783.3-0.5, ONION-OMEGA2 and ADM3485EARZ. By type, the board carries 60 diodes, 18 capacitors, 15 connectors, 13 resistors, 5 ICs and 3 switches.

It belongs with the displays & leds designs in this gallery.

From the project

Simple KiCAD PCB design for Onion Omega2(+) based WS28xx LED + DMX controller

This is a simple KiCAD PCB design to use a Onion Omega2(+) module as a LED + DMX controller with the P44-xx-open opensource firmware.

- configurable for 5V powered WS2813,WS2816,SK6812 and similar as well as 12V powered WS2815. - optional power PWM or on/off output for separate non-smart LED or powering off LED chains when idle. - RS485 interface (not opto isolated) which can be used as DMX512 output (or to drive Swiss Railways splitflap modules, or for modbus RTU) - Ethernet RJ45 Jack on board - room for small 5*12 WS2816 LED array (as a test/demo, hard to solder, harder to fix soldering…

P44-mini lx, from the project README
From the project README

Main components on the P44-mini lx

74HCT125DL78L05ACUTRR-783.3-0.5ONION-OMEGA2ADM3485EARZ

P44-mini lx bill of materials (BOM)

115 components, 34 distinct parts.

QtyPartRefs
1
74HCT125D
74HCT125+PWR
U1
1
L78L05ACUTR
L78L05_SOT89
U3
1
R-783.3-0.5
Recom_R783.3-0.5
U4
1
ONION-OMEGA2
U6
1
ADM3485EARZ
ADM3485E
U8
1
IRLR2905PBF
Q1
1
TermBlock-5P
J1
1
TXEN=/RXEN
J2
1
/RXEN=0
J3
1
INTLED-EN
J4
1
Molex 105017-0001
USB_B_Micro
J5
1
Amphenol G800MJ302018EU
FTDI
J6
1
LEDPWR_5V
J7
1
SUPPLY_FROM_LED
J8
1
SUPPLY_FROM_USB
J9
1
RPI-EXPANSION-26
J10
1
J0026D21B
Pulse-J0026D21B
J11
1
SUPPLY_5V
J12
1
BrdLED LEDPwr
J13
1
BrdLED USBPwr
J14
Show 14 more
QtyPartRefs
1
TermBlock-3P-381
J17
1
PTS645SM95SMTR92LFS
Button_SPST
SW1
2
PTS645SM95SMTR92LFS
SPST-10mm
SW2, SW3
60
WS2816B
D1, D2, D3, D4, D5, D6, D7, D8 +52
14
100nF
C1, C2, C3, C4, C5, C7, C8, C12 +6
1
10uF
C9
1
22uF
C11
1
1uF
C14
1
1nF/(2)1kV
C16
3
100R
RND
R1, R2, R6
3
100k
RND
R3, R4, R5
2
1k
R7, R8
4
1550805S8F499JT5E
49.9_1%
RND
R9, R10, R11, R12
1
10k
R13

P44-mini lx design files

The KiCad project lives in the plan44/p44-mini-lx repository on GitHub; these links point at the commit this page was built from.

P44-mini lx: common questions

How big is the P44-mini lx PCB?

The P44-mini lx measures 94 × 44.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the P44-mini lx?

115 components, from 34 distinct parts. The full bill of materials is listed on this page.

Where can I download the P44-mini lx design files?

From the plan44/p44-mini-lx repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the P44-mini lx design in my own project?

The repository has no license, so all rights stay with plan44. Use it as a reference, and ask the author before reusing the design.

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