HardLabs

Im920sltoDS4

boiled-mackerel·NHK2024·ODAmain/im920sltoDS4/im920sltoDS4.kicad_pcb

Im920sltoDS4 PCB layout, top view — open source STM32 board by boiled-mackerel

About the Im920sltoDS4 PCB

Im920sltoDS4 is an open source STM32 PCB design by boiled-mackerel, published on GitHub. It is a 2-layer board measuring 100 × 66 mm, with 52 components from 33 distinct parts.

Its main chip is the stm32_f446re, from the STM32 family. Other key parts include the NJM2845DL1-33, D_Schottky, ST-LINK, SW_DP3T and IM920sL. By type, the board carries 14 capacitors, 13 resistors, 9 diodes, 8 connectors, 7 ICs and 1 crystal.

From the project

circuit

Main components on the Im920sltoDS4

NJM2845DL1-33D_SchottkyST-LINKSW_DP3Tstm32_f446reIM920sL

Im920sltoDS4 bill of materials (BOM)

52 components, 33 distinct parts.

QtyPartRefs
1
NJM2845DL1-33
U1
1
D_Schottky
U2
1
ST-LINK
U3
2
SW_DP3T
U4, U7
1
stm32_f446re
U5
1
IM920sL
U6
1
8MHz
Y1
1
USB_C_Receptacle_USB2.0
J1
1
RX==TX
J2
1
TX==RX
J3
1
RX==RX
J4
1
TX==TX
J5
1
DS4_USB
J6
1
usb_host_spi_1
J7
1
usb_host_spi_2
J8
1
+5V
D1
1
+3.3V
D2
1
BUSY
D3
1
XMIT
D4
1
SLEEP
D5
Show 13 more
QtyPartRefs
1
STATUS
D6
1
PC7
D10
1
PC8
D11
1
PC9
D12
1
0.33u
C1
3
2.2u
C2, C8, C9
2
20p
C3, C4
7
0.1u
C5, C6, C10, C11, C12, C13, C14
1
4.7u
C7
2
5.1k
R1, R2
9
1.5k
R3, R4, R7, R8, R9, R10, R14, R15 +1
1
4.7k
R5
1
10k
R6

Im920sltoDS4 design files

The KiCad project lives in the boiled-mackerel/NHK2024 repository on GitHub; these links point at the commit this page was built from.

Im920sltoDS4: common questions

What microcontroller does the Im920sltoDS4 use?

The Im920sltoDS4 is built around the stm32_f446re, from the STM32 family.

How big is the Im920sltoDS4 PCB?

The Im920sltoDS4 measures 100 × 66 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Im920sltoDS4?

52 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Im920sltoDS4 design files?

From the boiled-mackerel/NHK2024 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Im920sltoDS4 design in my own project?

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

Can I test firmware for the Im920sltoDS4 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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