Tiny radar
About the Tiny radar PCB
Tiny radar is an open source STM32 PCB design by westonb, published on GitHub. It is a 4-layer board measuring 70 × 27.5 mm, with 101 components from 46 distinct parts.
Its main chip is the STM32L432K, from the STM32 family. Other key parts include the AP2114H, AD8330AC, LMX358IQ, MAX2750 and MGA-635P8. By type, the board carries 43 capacitors, 27 resistors, 11 ICs, 10 inductors, 5 connectors and 3 diodes.
From the project
A simple USB powered FMCW radar system
Main components on the Tiny radar
Tiny radar bill of materials (BOM)
101 components, 46 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP2114H | SOT-223 | U201 |
| 1 | STM32L432K | QFN-32-1EP_5x5mm_Pitch0.5mm | U202 |
| 1 | AD8330AC | QFN-16-3x3 | U301 |
| 1 | LMX358IQ | 8-QFN-2x2 | U302 |
| 1 | MAX2750 | MSOP-8_3x3mm | U401 |
| 2 | MGA-635P8 | 8-QFN-2x2 | U402, U404 |
| 1 | HHM1520 | HHM1520 | U403 |
| 1 | LT5560 | DFN-8-3x3 | U405 |
| 1 | PD2328J | PD2328 | U406 |
| 1 | WA04P | WA04P | U407 |
| 1 | USB_OTG | USB_Micro-B_10103594-0001LF | P201 |
| 2 | CONN_01X04 | Pin_Header_Straight_1x04_Pitch2.54mm | P202, P203 |
| 2 | CONN_01X02 | SMA-Edge-China-Short | P401, P402 |
| 2 | SW_PUSH | button-5mm | SW201, SW202 |
| 3 | LED | LED_0603 | D201, D202, D203 |
| 3 | FILTER | C_0805 | FB201, FB202, FB301 |
| 4 | 6.8n | C_0402 | L401, L402, L404, L407 |
| 1 | 2.7n | C_0402 | L403 |
| 2 | 0 | C_0402 | L405, L406 |
| 10 | 0.47u | C_0603 | C201, C202, C203, C206, C208, C302, C303, C304 +2 |
Show 26 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | 4.7u | C_0603 | C205, C207, C301, C407, C409, C410, C412, C421 +1 |
| 2 | 0.1u | C_0603 | C209, C402 |
| 1 | 3.3u | C_0603 | C307 |
| 1 | 47n | C_0603 | C308 |
| 2 | 1n | C_0603 | C310, C312 |
| 1 | C | C_0603 | C313 |
| 2 | 220p | C_0402 | C401, C403 |
| 4 | 10p | C_0402 | C404, C413, C416, C423 |
| 6 | 1n | C_0402 | C405, C406, C408, C414, C418, C424 |
| 2 | 47p | C_0402 | C411, C417 |
| 2 | 1p | C_0402 | C415, C419 |
| 1 | 0 | C_0402 | C420 |
| 1 | 100k | R_0603 | R201 |
| 3 | 1k | R_0603 | R202, R203, R204 |
| 5 | 4.7K | R_0603 | R205, R206, R207, R303, R304 |
| 2 | 10k | R_0603 | R208, R209 |
| 2 | 4.7 | R_0603 | R301, R302 |
| 2 | 15k | R_0603 | R307, R310 |
| 1 | DNP | R_0603 | R311 |
| 1 | 0 | R_0603 | R313 |
| 2 | 49.9 | R_0402 | R401, R405 |
| 2 | 3.6k | R_0402 | R402, R406 |
| 2 | 0 | R_0402 | R403, R407 |
| 1 | 3 | R_0402 | R404 |
| 2 | 200 | R_0402 | R408, R409 |
| 1 | 100 | R_0603 | R410 |
Tiny radar design files
The KiCad project lives in the westonb/tiny-radar repository on GitHub; these links point at the commit this page was built from.
- Layoutpcb/tiny-radar.kicad_pcb
Tiny radar: common questions
What microcontroller does the Tiny radar use?
The Tiny radar is built around the STM32L432K, from the STM32 family.
How big is the Tiny radar PCB?
The Tiny radar measures 70 × 27.5 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Tiny radar?
101 components, from 46 distinct parts. The full bill of materials is listed on this page.
Where can I download the Tiny radar design files?
From the westonb/tiny-radar repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Tiny radar design in my own project?
The repository has no license, so all rights stay with westonb. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Tiny radar 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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