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Pre relay

krzys9876·htpc_rig·Kicad_boards/Pre/Relay/pre_relay/pre_relay.kicad_pcb

Pre relay PCB layout, top view — open source board by krzys9876

About the Pre relay PCB

Pre relay is an open source PCB design by krzys9876, published on GitHub under the MIT license. It is a 2-layer board measuring 171.2 × 52.7 mm, with 71 components from 21 distinct parts.

By type, the board carries 21 diodes, 14 relays, 14 resistors, 13 connectors, 7 transistors and 2 capacitors.

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

From the project

HTPC, Volumio player, power amp, power supply etc.

This is a dump of various files related to the devices that I use in my home entertainment setup.

A miniITX PC enclosed in custom case (see: modushop.pl). The PC is fanless, so I had to choose a relative low power processor and a good radiator. However, since I have a overhead projector with a loud fan it doesn't matter at all.

A Raspberry Pi based Volumio player (see: volumio.com) enclosed in custom case. There are two Pis: one is a controller for two displays, the other is the actual player.

Pre relay bill of materials (BOM)

71 components, 21 distinct parts.

QtyPartRefs
7
BC847
Q1, Q2, Q3, Q4, Q5, Q6, Q7
1
INPUT1
J1
1
INPUT2
J2
1
OUTPUT_PRE
J3
1
OUTPUT_DIRECT
J4
1
POWER
J5
1
OUTPUT
J6
1
INPUT3
J7
1
INPUT4
J8
1
INPUT5
J9
1
INPUT
J10
1
CONTROL
J11
1
POWER2
J12
1
LED
J13
14
AZ850-x
K1, K2, K3, K4, K5, K6, K7, K8 +6
7
LED
D1, D2, D3, D4, D5, D6, D7
14
1N4148
D8, D9, D10, D11, D12, D13, D14, D15 +6
1
C
C1
1
CP
C2
7
1k
R1, R2, R3, R4, R5, R6, R7
Show 1 more
QtyPartRefs
7
R
R8, R9, R10, R11, R12, R13, R14

Pre relay design files

The KiCad project lives in the krzys9876/htpc_rig repository on GitHub; these links point at the commit this page was built from.

Pre relay: common questions

How big is the Pre relay PCB?

The Pre relay measures 171.2 × 52.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pre relay?

71 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pre relay design files?

From the krzys9876/htpc_rig repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Pre relay design in my own project?

Yes, under the terms of its MIT license, which krzys9876 chose for the repository.

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