HardLabs

CHIPDOWNARM

8aChristian·CHIPDOWNARM

CHIPDOWNARM PCB layout, top view — open source STM32 board by 8aChristian

About the CHIPDOWNARM PCB

CHIPDOWNARM is an open source STM32 PCB design by 8aChristian, published on GitHub. It is a 4-layer board measuring 45 × 30 mm, with 45 components from 39 distinct parts.

Its main chip is the STM32WLE5CCU6, from the STM32 family. Other key parts include the TPS62840DLCR and SHTC3 (I2C 0x70). By type, the board carries 26 capacitors, 3 ICs, 3 connectors, 3 diodes, 2 crystals and 2 inductors.

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

From the project

CHIPDOWNARM is a highly optimized, industrial-grade IoT telemetry edge node designed for mission-critical Sub-GHz LPWAN networks, remote monitoring, and smart agriculture deployments. Built around the high-performance STMicroelectronics STM32WLE5 (ARM Cortex-M4 with integrated Su

CHIPDOWNARM is a highly optimized, industrial-grade IoT telemetry edge node designed for mission-critical Sub-GHz LPWAN networks, remote monitoring, and smart agriculture deployments. Built around the high-performance STMicroelectronics STM32WLE5 (ARM Cortex-M4 with integrated Sub-GHz LoRa/FSK transceiver), it delivers robust long-range communication with an ultra-low power footprint.

CHIPDOWNARM, from the project README
From the project README

Main components on the CHIPDOWNARM

STM32WLE5CCU6TPS62840DLCRSHTC3 (I2C 0x70)

CHIPDOWNARM bill of materials (BOM)

45 components, 39 distinct parts.

QtyPartRefs
1
STM32WLE5CCU6
U1
1
TPS62840DLCR
U2
1
SHTC3 (I2C 0x70)
U3
1
NT2016SA 32MHz TCXO
Y1
1
ABS07-32.768KHZ-T
Y2
1
BATT_IN (3.6V/3.0V)
J1
1
Hirose U.FL-R-SMT(01)
J2
1
TC2030-IDC-NL
J3
1
4.7pF C0G
C_M1
1
2.7pF C0G
C_M2
1
500mA PPTC
F1
1
3.6nH High-Q
L_M1
1
6.8nH High-Q
L_M2
1
10k (BOOT0)
R_BOOT0
1
SMAJ5.0A (TVS 5V)
D1
1
LED_STATUS (Green)
D2
1
uClamp0501P (0.3pF ESD)
D3
1
600R@100MHz Ferrite Bead
FB1
1
2.2uH (DFE201610E)
L1
1
10uF 10V X7R
C1
Show 19 more
QtyPartRefs
1
4.7uF 10V X7R
C2
2
10uF 6.3V X7R
C3, C4
5
100nF
C5, C17, C22, C25, C26
1
100nF (NRST)
C6
1
47pF (VR_PA)
C7
1
100nF (VR_PA)
C8
1
4.7uF (VDDPA)
C9
1
100nF (VDDPA)
C10
1
47pF (VDDPA)
C11
1
10pF C0G
C12
1
100nF (VDDRF)
C13
1
10pF (VDDRF)
C14
1
4.7uF (VFBSMPS)
C15
1
100nF (VFBSMPS)
C16
2
8.2pF C0G
C18, C19
1
1uF (VDDA)
C20
1
100nF (VDDA)
C21
1
4.7uF (VDDSMPS)
C23
1
100nF (VDDSMPS)
C24

CHIPDOWNARM design files

The KiCad project lives in the 8aChristian/CHIPDOWNARM repository on GitHub; these links point at the commit this page was built from.

CHIPDOWNARM: common questions

What microcontroller does the CHIPDOWNARM use?

The CHIPDOWNARM is built around the STM32WLE5CCU6, from the STM32 family.

How big is the CHIPDOWNARM PCB?

The CHIPDOWNARM measures 45 × 30 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the CHIPDOWNARM?

45 components, from 39 distinct parts. The full bill of materials is listed on this page.

Where can I download the CHIPDOWNARM design files?

From the 8aChristian/CHIPDOWNARM repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the CHIPDOWNARM design in my own project?

The repository has no license, so all rights stay with 8aChristian. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the CHIPDOWNARM 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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