HardLabs

1bitsy rr

1Bitsy·1bitsy-hardware·1bitsy/v1.0d/1bitsy-rr.kicad_pcb

1bitsy rr PCB layout, top view — open source STM32 board by 1Bitsy

About the 1bitsy rr PCB

1bitsy rr is an open source STM32 PCB design by 1Bitsy, published on GitHub. It is a 4-layer board measuring 38.1 × 17.8 mm, with 88 components from 23 distinct parts.

Its main chip is the STM32F415RGT, from the STM32 family. Other key parts include the VREG_3V3. By type, the board carries 56 connectors, 18 capacitors, 5 resistors, 3 crystals, 2 ICs and 1 switch.

It belongs with the dev boards & breakouts and usb & debug tools designs in this gallery.

From the project

Small breadboard friendly STM32 (eventually other mcu's too) eval boards with exposed JTAG and SWD for the use with Black Magic Probe and others!

This project includes 1BitSy evaluation boards. These boards are breadboard friendly STM32 (eventually other MCUs will be considered) with exposed Cortex JTAG and SWD interfaces. This allows the use of the Black Magic Probe, instead of the usually very limited built in debugger hardware.

Currently we have the following eval boards:

You can find the datasheet of the STM32F415RGT6 chip on the STMicroelectronics website.

1bitsy rr, from the project README
From the project README

Main components on the 1bitsy rr

VREG_3V3STM32F415RGT

1bitsy rr bill of materials (BOM)

88 components, 23 distinct parts.

QtyPartRefs
1
VREG_3V3
U1
1
STM32F415RGT
U2
1
32.768kHz
X1
1
25MHz
X2
1
JTAG-10
X3
1
BOOT
J1
44
CONN_01X01
P1, P2, P3, P4, P5, P6, P7, P8 +36
1
USB_OTG
P24
5
TP
P43, P44, P45, P46, P47
5
CONN_01X01
P48, P49, P50, P51, P52
1
TACT_G
SW1
1
ORA
LED1
1
>100mA
D1
1
Ferr
L1
3
4u7
C1, C5, C13
2
1u
C2, C15
1
470p
C3
6
100n
C4, C10, C11, C12, C14, C18
2
10p
C6, C7
2
10p
C8, C9
Show 3 more
QtyPartRefs
2
2u2
C16, C17
4
10k
R1, R2, R3, R5
1
300
R4

1bitsy rr design files

The KiCad project lives in the 1Bitsy/1bitsy-hardware repository on GitHub; these links point at the commit this page was built from.

1bitsy rr: common questions

What microcontroller does the 1bitsy rr use?

The 1bitsy rr is built around the STM32F415RGT, from the STM32 family.

How big is the 1bitsy rr PCB?

The 1bitsy rr measures 38.1 × 17.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the 1bitsy rr?

88 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the 1bitsy rr design files?

From the 1Bitsy/1bitsy-hardware repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 1bitsy rr design in my own project?

The repository has no license, so all rights stay with 1Bitsy. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the 1bitsy rr 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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