HardLabs

E dice

polaracep·soldering-kits·e-dice/e-dice.kicad_pcb

E dice PCB layout, top view — open source board by polaracep

About the E dice PCB

E dice is an open source PCB design by polaracep, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 105.5 × 34.5 mm, with 48 components from 20 distinct parts.

Other key parts include the 4017. By type, the board carries 19 resistors, 8 connectors, 7 transistors, 7 diodes, 3 capacitors and 2 switches.

From the project

A collection of easy-to-solder boards for learning soldering

A shakeable dice with semi-random number generator.

PCB has 3 parts, which have to be mounted on top of one another. I used just male/female sockets, although not testing the durability of such mounting style. Each part has UP and DOWN written on them, signalizing the orientation and then one of three position descriptors (BOT, MID, TOP). The assembly follows this diagram:

E dice, from the project README
From the project README

Main components on the E dice

4017

E dice bill of materials (BOM)

48 components, 20 distinct parts.

QtyPartRefs
1
4017
U1
6
2N3904
Q1, Q2, Q3, Q5, Q6, Q7
1
2N3906
Q4
1
mid_conn_1
J1
1
top_conn_1
J2
1
mid_conn_2
J3
1
top_conn_2
J4
1
bot_conn_1
J6
1
bot_conn_2
J7
1
mid_conn_3
J8
1
mid_conn_4
J9
1
3V
BT1
1
Vibration Sensor
S1
1
SW_SPDT
SW1
7
LED
D1, D2, D3, D4, D5, D6, D7
2
100n
C2, C3
1
C
C4
8
10k
R1, R2, R3, R4, R5, R6, R7, R8
6
470R
R9, R11, R14, R15, R16, R18
5
1k
R10, R12, R13, R17, R19

E dice design files

The KiCad project lives in the polaracep/soldering-kits repository on GitHub; these links point at the commit this page was built from.

E dice: common questions

How big is the E dice PCB?

The E dice measures 105.5 × 34.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the E dice?

48 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the E dice design files?

From the polaracep/soldering-kits repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the E dice design in my own project?

Yes, under the terms of its AGPL-3.0 license, which polaracep chose for the repository.

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