HardLabs

MCU module

eddyem·STM8_samples·microdrill/schematics_new/MCU_module.kicad_pcb

MCU module layout, top view — open source STM32 board by eddyem

About the MCU module

MCU module is an open source STM32 PCB design by eddyem, published on GitHub. It is a 2-layer board measuring 53.5 × 50 mm, with 37 components from 20 distinct parts.

Its main chip is the STM8S105K4T6C, from the STM32 family. By type, the board carries 7 resistors, 6 connectors, 4 capacitors, 3 LEDs, 2 transistors and 1 IC.

From the project

Some code samples and ready projects based on STM8 (deprecated)

By pressing footswitch you move drill down. Speed setup produced by variable resistor on tray's control. Pulling footswitch up returns drill into its previous position. If you press down the footswitch when drill haven't reach its starting position, it moves down again and returns back on next pulling up.

If drill motor was off, pressing footswitch will also turn it on.

Main components on the MCU module

STM8S105K4T6C

MCU module bill of materials (BOM)

37 components, 20 distinct parts.

QtyPartRefs
1
STM8S105K4T6C
U1
2
IRML2502
Q1, Q2
1
USART
J1
1
SWIM
J2
1
Drill
P1
1
DrillSW
P2
1
Stepper
P3
1
Slide
P4
9
CONN_1
+5V1, BTN1, BTN2, DOWN1, GND1, INPUT0, INPUT1, POT1 +1
3
L9110
DA1, DA2, DA3
1
POWER
K1
1
S8205A
VT1
3
CONN_1
LED0, LED1, LED2
1
0.1u
C1
2
0.1u
C2, C4
1
1u
C3
2
1k
R1, R2
1
0.33R
R3
3
10k
R4, R5, R11
1
510
R8

MCU module design files

The KiCad project lives in the eddyem/STM8_samples repository on GitHub; these links point at the commit this page was built from.

MCU module: common questions

What microcontroller does the MCU module use?

The MCU module is built around the STM8S105K4T6C, from the STM32 family.

How big is the MCU module?

The MCU module measures 53.5 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MCU module?

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

Where can I download the MCU module design files?

From the eddyem/STM8_samples repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

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

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

Can I test firmware for the MCU 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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