HardLabs

Goodwatch21

travisgoodspeed·goodwatch·hardware/goodwatch21/goodwatch21.kicad_pcb

Goodwatch21 PCB layout, top view — open source board by travisgoodspeed

About the Goodwatch21 PCB

Goodwatch21 is an open source PCB design by travisgoodspeed, published on GitHub. It is a 2-layer board measuring 25.6 × 27.6 mm, with 20 components from 17 distinct parts.

Other key parts include the CC430F613x and YageoS432. By type, the board carries 9 capacitors, 2 crystals, 2 resistors, 1 IC, 1 module and 1 inductor.

It belongs with the rf & radio designs in this gallery.

From the project

Replacement board for Casio Calculator Watches using the CC430F6147

These directories contain different hardware revisions of the GoodWatch. When a revision is manufactured, its files are copied to a new directory and the old may only be updated for documentation reasons.

The GoodWatch 22 and earlier were designed in Kicad 4, and might be awkward to open in newer revisions. The GoodWatch30 is designed in Kicad 5.

This is our current design, featuring a new balun and more generous filters. Email Travis for some free PCBs if you'd like to build one.

Main components on the Goodwatch21

CC430F613xYageoS432

Goodwatch21 bill of materials (BOM)

20 components, 17 distinct parts.

QtyPartRefs
1
CC430F613x
U1
1
YageoS432
A1
1
32.768kHz
Y1
1
FA128
Y2
1
0433bm15a0001
B1
1
CA53BOARD
BRD1
1
CA53KEYPAD
KPD1
1
CA53LCD
LCD1
1
L_Small
L1
1
47uF
C1
2
0.1uF
C2, C3
1
10uF
C4
1
0.47uF
C5
2
19pF
C6, C7
2
0.1uF
C8, C9
1
75k
R1
1
56k
R2

Goodwatch21 design files

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

Goodwatch21: common questions

How big is the Goodwatch21 PCB?

The Goodwatch21 measures 25.6 × 27.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Goodwatch21?

20 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Goodwatch21 design files?

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

Can I use the Goodwatch21 design in my own project?

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

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