2 layers27.9 × 16.5 mm
2 layers19.1 × 29.1 mm
Placebo
dotcypress/placebo27Truly minimal STM32G0/STM32C0 prototyping board
- Size
- 19.1 × 29.1 mm
- Copper layers
- 2
- Thickness
- 0.29 mm
- Parts
- 18
- Nets
- 25
- Pads
- 79
- Tracks, vias
- 197, 10
- Pours
- 51
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 22 Jul 2021
- Updated
- 19 Jan 2023
Overview
Placebo is an open-source printed circuit board by dotcypress, from the dotcypress/placebo repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 19.1 × 29.1 mm with 18 parts on 25 nets, routed with 197 tracks and 10 vias.
It is built around the SML-D12W8WT86A. Its parts include 5 capacitors, 4 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the STM32 boards of this library.
Main components
1README
readme.mdPlacebo
Truly minimal STM32G0/STM32C0 proto board.
Features
- Breadboard/Perfboard friendly
- Power line bypass capacitors
- Reset circuit
Tag-Connect TC2030-CTX-NLprogramming connector- Optional battery connector with LDO
- Optional configurable LED
Pinout
Rust firmware
- Install rustup by following the instructions at https://rustup.rs
- Install Cortex-M0, M0+, and M1 (ARMv6-M architecture) target:
rustup target add thumbv6m-none-eabi - Install LLVM tools:
rustup component add llvm-tools-preview - Install cargo-binutils:
cargo install cargo-binutils(Note: on some Linux distros (e.g. Ubuntu) you may need to install the packages build-essential, gcc-arm-none-eabi, libssl-dev and pkg-config prior to installing cargo-binutils.) - Install cargo-generate:
cargo install cargo-generate - Generate project:
cargo generate --git https://github.com/dotcypress/placebo-template.git - Build firmware:
cargo build --release - Flash microcontroller:
cargo run --release
Resources
License
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C4 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3, C5 |
| 2 | DNP | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 470R | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | AP7370-33W5-7 | Package_TO_SOT_SMD:TSOT-23-5_HandSoldering | U1 |
| 1 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1.5mm | FID1 |
| 1 | G*** | kibuzzard-631021FD | kibuzzard-631021FD |
| 1 | LOGO | LOGO | LOGO1 |
| 1 | PlaceboConnect | placebo:PlaceboConnect_Cutout | U3 |
| 1 | SML-D12W8WT86A | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | STM32G0xxFx | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U2 |
| 1 | TagConnect | placebo:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J2 |
The 17 most common of 18 parts.
Questions
How big is the Placebo PCB?
It measures 19.1 × 29.1 mm and has 2 copper layers, 0.29 mm thick.
What parts does the Placebo use?
18 parts, built around the SML-D12W8WT86A. 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.
Where can I download the Placebo KiCad files?
From the dotcypress/placebo repository on GitHub, at the commit this page was made from: the board is placebo.kicad_pcb and its schematic placebo.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Placebo design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 2 layers42.7 × 13.7 mm
Stm32-mini12864
VoronDesign/Voron-Hardware
Cool Hardware designed by the Voron Design group
18 parts1.1kGPL-3.0 - 2 layers41.2 × 46.6 mm
- 2 layers44 × 51.3 mm
4272MAVcoder R4
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
18 parts915 - 2 layers28.3 × 14.3 mm
Tap Photosensor PCB
VoronDesign/Voron-Tap
Tap is a nozzle-based z-probe for the V2 and Trident printer designs. The entire toolhead moves to trigger an optical switch. Tap offers many advantages:
18 parts716GPL-3.0 - 2 layers20.3 × 15.2 mm
L0 stepper driver
Luos-io/luos_engine
Open-source and real-time orchestrator for cyber-physical-systems, to easily design, test and deploy embedded applications and digital twins.
18 parts546MIT - 2 layers
- 2 layers42.5 × 28.8 mm
C5VRX JACK DIY V2
Twotoz/C5VRX
Ultra-minimal, zero-CPU 5.8 GHz analog FPV video receiver using ESP32-C5 Wi-Fi 6 PHY MODEM_DIAG, BitScrambler WBFM demodulation & resistor DAC CVBS
18 parts515GPL-3.0