HardLabs

Control module

gabebuckmaster·nixie_clock·electronics/control_module/control_module.kicad_pcb

Control module layout, top view — open source STM32 board by gabebuckmaster

About the Control module

Control module is an open source STM32 PCB design by gabebuckmaster, published on GitHub under the MIT license. It is a 2-layer board measuring 96 × 40 mm, with 68 components from 38 distinct parts.

Its main chip is the STM32F042C6T6, from the STM32 family. Other key parts include the UC3843BD1G, AZ1117EH-3.3 and DS3231MZ. By type, the board carries 21 resistors, 19 capacitors, 9 connectors, 5 transistors, 4 ICs and 4 switches.

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

From the project

A minimalist nixie tube clock design in a cnc-machined hardwood case using IN12B tubes.

This PCB includes the microcontroller, a temperature compensated real time clock IC with battery backup, and the boost converter that generates the 180V supply for the nixie tubes.

For assembly, see the BOM and fab drawing

Control module, from the project README
From the project README

Main components on the Control module

STM32F042C6T6UC3843BD1GAZ1117EH-3.3DS3231MZ

Control module bill of materials (BOM)

68 components, 38 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F042C6T6
STM32F042C6Tx
STMicroelectronics
U1
1
UC3843BD1G
UC3843_SOIC8
ON Semiconductor
U2
1
AZ1117EH-3.3
Diodes Inc
U3
1
DS3231MZ
Maxim Integrated
U4
3
2N7002
Generic
Q1, Q2, Q3
1
BSS84
Generic
Q4
1
IRFL214TRPBF
IRFL214
Vishay Siliconix
Q5
2
Conn_01x05
J1, J2
1
CONN_01X03
J3
1
CONN_01X04
J4
1
PJ-064A
CUI
J5
4
NOSTUFF
J101, J102, J103, J104
1
250 mA
Generic
F1
2
SW_Push
SW1, SW2
2
SW_Push
SW3, SW4
1
BAT240AE6327HTSA1
BAT240
Infineon
D1
2
BAT54T1G
BAT54
ON Semiconductor
D2, D3
1
GREEN_LED
D4
1
CDRH105RNP-470NC
47u
Sumida
L1
5
100N
100n
Generic
C1, C2, C3, C4, C5
Show 18 more
QtyPartRefs
4
1u
Generic
C6, C7, C8, C9
4
10U
10u
Generic
C10, C11, C12, C13
2
100n 250V
Generic
C14, C15
1
22N
22n
Generic
C16
1
240P
240p
Generic
C17
1
2.2NF
2.2nF
Generic
C18
1
DX-5R5H334U
Elna
C19
8
4.99K
4.99k
Generic
R1, R2, R3, R4, R5, R6, R7, R8
1
4.99k 1%
Generic
R9
1
1 1%
Generic
R10
2
10
Generic
R11, R12
2
100
Generic
R13, R14
1
3.92k 1%
Generic
R16
1
22.1k 1%
Generic
R17
1
15k 1%
Generic
R18
1
340k 1%
Generic
R19
1
120 1/4W
Generic
R20
2
NOSTUFF
R101, R102

Control module design files

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

Control module: common questions

What microcontroller does the Control module use?

The Control module is built around the STM32F042C6T6, from the STM32 family.

How big is the Control module?

The Control module measures 96 × 40 mm, has 2 copper layers and is 1 mm thick.

How many components are on the Control module?

68 components, from 38 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 Control module design files?

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

Can I use the Control module design in my own project?

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

Can I test firmware for the Control module 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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