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Pole node

ademuri·colordance-circle·hardware/pole-node/pole-node.kicad_pcb

Pole node PCB layout, top view — open source board by ademuri

About the Pole node PCB

Pole node is an open source PCB design by ademuri, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 93 × 27.5 mm, with 46 components from 25 distinct parts.

Other key parts include the SN74ACT244PWR and SP485ECN-L/TR. By type, the board carries 13 diodes, 12 capacitors, 7 connectors, 7 resistors, 3 ICs and 1 inductor.

From the project

- Feedback voltage is 0.81V. Use this voltage divider calculator. For E96, this yields 11500 and 2210 Ohms, which produces 5.02v. - Inductor value: L1 = 5V (12V - 5V) / (1.4MHz 12V 1.5A .26) = 5.3uH -> 5.6 uH - Peak inductor current: 1.5A + ((12V - 5V) 5V) / (2 1.4MHz 12V 5.6uH)

- Feedback voltage is 0.81V. Use this voltage divider calculator. For E96, this yields 11500 and 2210 Ohms, which produces 5.02v. - Inductor value: L1 = 5V (12V - 5V) / (1.4MHz 12V 1.5A .26) = 5.3uH -> 5.6 uH - Peak inductor current: 1.5A + ((12V - 5V) 5V) / (2 1.4MHz 12V 5.6uH) = 1.69A - Inductor current rating is 1.5 1.69A = 2.5A - Input ripple with 10uF cap: 1.5A / (1.4Mhz 10uF) (5V / 12V) (1 - (5V / 12V)) = .026V

Main components on the Pole node

SN74ACT244PWRSP485ECN-L/TR

Pole node bill of materials (BOM)

46 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SN74ACT244PWR
XL1509-5.0E1
U1
2
SP485ECN-L/TR
MAX485E
U2, U3
2
Anderson
J1, J7
1
54601-908WPLF
RJ45
J2
4
78208-103HLF
Conn_01x03
J3, J4, J5, J6
2
HOLE
H1, H2
1
PTC 750mA
TH1
1
SCHOTTKY
D1
1
C8678
SCHOTTKY
D2
5
SMBJ6.0CD-M3/H
D_TVS_5V
D3, D5, D13, D14, D15
1
150060RS75000
LED
D4
4
SMBJ6.0CD-M3/H
D_TVS_DATA
D6, D8, D9, D11
1
SMBJ13CA
D_TVS_12V
D12
1
68uH/2A
L1
2
LMK212BBJ226MG-T
22uF
C1, C3
2
CL10B122KB8NNNC
1300pF
C4, C5
1
10UF
100nF
C6
1
10NF
100nF
C7
4
100NF
100nF
C8, C9, C10, C13
2
ESC477M035AH4EA
470uF
C11, C12
Show 5 more
QtyPartRefs
2
10K
470
R1, R2
2
RMCF0603JG120R
120
R3, R4
1
10k
R5
1
470
R6
1
120
470
R7

Pole node design files

The KiCad project lives in the ademuri/colordance-circle repository on GitHub; these links point at the commit this page was built from.

Pole node: common questions

How big is the Pole node PCB?

The Pole node measures 93 × 27.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pole node?

46 components, from 25 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Pole node design files?

From the ademuri/colordance-circle repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Pole node design in my own project?

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

More boards in colordance-circle