
1bitsy
1Bitsy/1bitsy-hardware
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!

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!
1bitsy is an open-source printed circuit board by 1Bitsy, from the 1Bitsy/1bitsy-hardware repository on GitHub. It is a 4-layer board of 38.1 × 17.8 mm with 99 parts on 63 nets, routed with 709 tracks and 84 vias.
It is built around the STM32F415RGT6. Its parts include 56 connectors, 18 capacitors, 5 resistors, 3 crystals and 2 ICs. It belongs with the interfaces and adapters and sensors and measurement boards and the STM32 boards of this library.
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.

| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | CONN_01X01 | pkl_pin_headers:Pin_Header_Straight_Round_1x01 | P1, P2, P10, P11, P12, P13, P14, P15, P16, P17, P18, P19, P20, P21, P22, P23 +28 |
| 6 | 100n | pkl_dipol:C_0402 | C4, C10, C11, C12, C14, C18 |
| 5 | CONN_01X01 | pkl_pads:PAD_SMD_1x2.65 | P48, P49, P50, P51, P52 |
| 5 | TP | pkl_pads:POGO_PAD_SMD_R_1x1 | P43, P44, P45, P46, P47 |
| 4 | 10k | pkl_dipol:R_0402 | R1, R2, R3, R5 |
| 3 | 4u7 | pkl_dipol:C_0603 | C1, C5, C13 |
| 2 | 10p | pkl_dipol:C_0603 | C6, C7 |
| 2 | 10p | pkl_dipol:C_0402 | C8, C9 |
| 2 | 1u | pkl_dipol:C_0402 | C2, C15 |
| 2 | 2u2 | pkl_dipol:C_0402 | C16, C17 |
| 1 | 1BitSquared | pkl_logos:1b2_Logo_SilkS_7.5mm | LOGO1 |
| 1 | 25MHz | pkl_misc:ABM8 | X2 |
| 1 | 300 | pkl_dipol:R_0402 | R4 |
| 1 | 32.768kHz | pkl_misc:ABS07 | X1 |
| 1 | 470p | pkl_dipol:C_0402 | C3 |
| 1 | >100mA | pkl_dipol:D_0603 | D1 |
| 1 | BOOT | pkl_jumpers:J_0402 | J1 |
| 1 | Ferr | pkl_dipol:L_0402 | L1 |
| 1 | JTAG-10 | pkl_samtec:FTSH-105-XX-X-DV | X3 |
| 1 | ORA | pkl_dipol:D_0603 | LED1 |
| 1 | STM32F415RGT | pkl_housings_qfp:LQFP-64_10x10mm_Pitch0.5mm | U2 |
| 1 | TACT_G | pkl_buttons_switches:Tact_Switch_Top_B3U-1000P | SW1 |
| 1 | USB_OTG | pkl_connectors:Connector_USB_Micro_B_SMD | P24 |
| 1 | VREG_3V3 | pkl_housings_sot:SOT-23-5 | U1 |
The 89 most common of 99 parts.

1Bitsy/1bitsy-hardware
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!


bradgrantham/stm32f415rg_breakout
64-pin protoboardable breakout for the 64LQFP STM32F415RG Cortex M4



polpo/picogus
Emulation of ISA sound cards and CD-ROM on Raspberry Pi Pico (GUS, SB/Adlib, MPU-401, Tandy, CMS, Panasonic CD-ROM) with USB mouse/joystick support


felixheld/qspimux
QSPI flash multiplexer - connect a SPI NOR flash to either an embedded system or a programmer for remote firmware tests

It measures 38.1 × 17.8 mm and has 4 copper layers, 1.6 mm thick.
99 parts, built around the STM32F415RGT6. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the 1Bitsy/1bitsy-hardware repository on GitHub, at the commit this page was made from: the board is 1bitsy/v1.0b/1bitsy.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask 1Bitsy before reusing the design.