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Split flap units

tinkermax·split-flap·PCBs/Kicad/Units/split-flap-units.kicad_pcb

Split flap units PCB layout, top view — open source board by tinkermax
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About the Split flap units PCB

Split flap units is an open source PCB design by tinkermax, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 99.8 × 50.1 mm, with 23 components from 13 distinct parts.

Other key parts include the A4988. By type, the board carries 10 connectors, 9 capacitors and 4 modules.

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

From the project

DIY mechanical spli-flap display

This is an alternate electronics and firmware for David Kingsman's Split-Flap Display.

MYNTPSERVER "au.pool.ntp.org" // Set the best fitting NTP server (pool) for your location MYTZ "AEST-10AEDT,M10.1.0,M4.1.0/3" // Set your time zone from https://github.com/nayarsystems/posixtz_db/blob/master/zones.csv

WORDNIKAPIKEY "" // Get your private key from https://developer.wordnik.com/ MINWORDLEN 9 // Specify minimum word length to fetch from Wordnik WORDUPDATESPERHOUR 1 // Set number of word updates from https://wordnik.com per hour. 0 will disable, else use an integer that results in an exact…

Split flap units, from the project README
From the project README

Main components on the Split flap units

A4988

Split flap units bill of materials (BOM)

23 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
A4988
A1, A2, A3, A4
1
Units 0-3
J1
1
GND CALIB
J2
1
SENS3
sens3
J3
1
B5B-XH-A(LF)(SN)
motor 3/7/11
JST Sales America Inc.
J4
1
SENS2
sens2
J5
1
B5B-XH-A(LF)(SN)
motor 2/6/10
JST Sales America Inc.
J6
1
SENS1
sens1
J7
1
B5B-XH-A(LF)(SN)
motor 1/5/9
JST Sales America Inc.
J8
1
SENS0
sens0
J9
1
B5B-XH-A(LF)(SN)
motor 0/4/8
JST Sales America Inc.
J10
5
100UF
100uF
C1, C2, C3, C4, C5
4
100NF
100nF
C6, C7, C8, C9

Split flap units design files

The KiCad project lives in the tinkermax/split-flap repository on GitHub; these links point at the commit this page was built from.

Split flap units: common questions

How big is the Split flap units PCB?

The Split flap units measures 99.8 × 50.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Split flap units?

23 components, from 13 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 Split flap units design files?

From the tinkermax/split-flap 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 Split flap units design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which tinkermax chose for the repository.

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