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KbxBinaryClock.v3.backup

kbx81·RGBBinaryClock·hardware/kbxBinaryClock.v3/kbxBinaryClock.v3.backup.kicad_pcb

KbxBinaryClock.v3.backup PCB layout, top view — open source STM32 board by kbx81
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About the KbxBinaryClock.v3.backup PCB

KbxBinaryClock.v3.backup is an open source STM32 PCB design by kbx81, published on GitHub. It is a 2-layer board measuring 127 × 114.3 mm, with 123 components from 44 distinct parts.

Its main chip is the STM32F072CBTx, from the STM32 family. Other key parts include the TLC5947, LD1117S33TR, DS3231 and MAX485E. By type, the board carries 38 resistors, 25 capacitors, 24 LEDs, 10 transistors, 7 ICs and 6 test points.

It belongs with the sensors designs in this gallery.

From the project

RGB Binary Clock project files - PCB and source

RGB Binary Clock PCB project files for KiCad (v4/v5)

Detailing the process is a bit outside of what I plan to discuss here. There are plenty of resources out around the web already that will do a better job of explaining this process than I can. That said, there's not much to it -- the files you need are here and all you need to do (more or less) is upload them to your PCB fabricator of choice and, after a few days, they'll ship them to you. I've used OSHPark for the prototypes and I can assure you that they turn out fantastic (purple) boards.

KbxBinaryClock.v3.backup, from the project README
From the project README

Main components on the KbxBinaryClock.v3.backup

STM32F072CBTxTLC5947LD1117S33TRDS3231MAX485E

KbxBinaryClock.v3.backup bill of materials (BOM)

123 components, 44 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F072CBTx
U1
3
TLC5947
U2, U3, U4
1
LD1117S33TR
U5
1
DS3231
U6
1
MAX485E
U7
3
2N7002
Q1, Q2, Q3
1
Q_Photo_NPN
Q4
6
Q_NPN_BCE
Q5, Q6, Q7, Q8, Q9, Q10
1
32.768 KHz
Y1
1
8 MHz
Y2
1
Jack-DC
J1
1
Conn_01x06
J2
1
Conn_02x03_Odd_Even
J3
1
STM32_SWD_USART
P1
1
CR2032
BT1
1
Buzzer
BZ1
1
~2A
F1
1
100K
RV1
1
SW_Push
SW1
1
TouchPad1
TP1
Show 24 more
QtyPartRefs
1
TouchPad2
TP2
1
TouchPad3
TP3
1
TouchPad4
TP4
1
TouchPad5
TP5
1
TouchPad6
TP6
24
LED_RGB_COMMON_ANODE
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +16
1
LED_Dual_AACC
D1
1
S3A
D2
2
12.5 pF
C1, C2
2
10 pF
C3, C4
12
100 nF
C5, C6, C8, C9, C10, C17, C18, C19 +4
1
10 nF
C7
1
1 µF
C11
2
4.7 µF
C12, C13
3
47 nF
C14, C15, C16
1
100 µF
C20
1
10 µF
C22
3
1M
R1, R4, R5
14
1K
R2, R3, R8, R9, R10, R11, R12, R13 +6
12
10K
R6, R14, R15, R16, R17, R18, R19, R23 +4
1
100K
R7
3
4K7
R21, R26, R31
3
24K6
R22, R27, R32
2
3K3
R36, R37

KbxBinaryClock.v3.backup design files

The KiCad project lives in the kbx81/RGBBinaryClock repository on GitHub; these links point at the commit this page was built from.

KbxBinaryClock.v3.backup: common questions

What microcontroller does the KbxBinaryClock.v3.backup use?

The KbxBinaryClock.v3.backup is built around the STM32F072CBTx, from the STM32 family.

How big is the KbxBinaryClock.v3.backup PCB?

The KbxBinaryClock.v3.backup measures 127 × 114.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KbxBinaryClock.v3.backup?

123 components, from 44 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 KbxBinaryClock.v3.backup design files?

From the kbx81/RGBBinaryClock repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the KbxBinaryClock.v3.backup design in my own project?

The repository has no license, so all rights stay with kbx81. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the KbxBinaryClock.v3.backup without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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