Benchy Signal Generator
About the Benchy Signal Generator PCB
Benchy Signal Generator is an open source STM32 PCB design by Daxxn, published on GitHub under the AGPL-3.0 license. It is a 4-layer board measuring 88 × 82 mm, with 141 components from 90 distinct parts.
Its main chip is the STM32MP157FAB1, from the STM32 family. Other key parts include the TPS65400RGZT, NCP51200, ATTINY416-MNR, TLV3401 and MAX15027. By type, the board carries 64 resistors, 48 capacitors, 11 ICs, 9 connectors, 5 diodes and 2 crystals.
It belongs with the test & measurement designs in this gallery.
From the project
New and improved Benchy, now with more doodads!
Your electronics workbench buddy! (Warning - Benchy is not actually your buddy and will probably try to kill you. It's hideously expensive, and way too time consuming to build!)
- Single Board Computer running embedded linux - 5 Port USB 3.1 hub - All data ports are properly protected agains over-current and backfeeding - 2 USB 2.0 ports for the SBC peripherals (keyboard/mouse) - 2 1Gb Ethernet ports - 8 Software controlled relays for general things like lighting - (In Development) Lab Power Supply W/ Current or Voltage Limiting (15V @ 2A) - Lighting system that can drive 4 RGBW, 2 RGB, 6…
Main components on the Benchy Signal Generator
Benchy Signal Generator bill of materials (BOM)
141 components, 90 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32MP157FAB1 STM32F072CBU6 | QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U1 |
| 1 | TPS65400RGZT 74LVC1G08GW | SOT-353_SC-70-5 | U2 |
| 1 | NCP51200 LMV324DTBR2G | TSSOP-14_4.4x5mm_P0.65mm | U3 |
| 1 | ATTINY416-MNR AD9837ACPZ-RL | DFN-10-1EP_3x3mm_P0.5mm_EP1.65x2.38mm | U4 |
| 1 | TLV3401 LM317MDT-TR | TO-252-2 | U5 |
| 1 | MAX15027 TLV759P | DFN-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U6 |
| 1 | SN74LVC1G32 LM317LIPK | SOT-89-3 | U7 |
| 1 | 74HCT2G08 ICL8038 | DIP-14_W7.62mm | U8 |
| 1 | AP2127K-3.3 ICL8038 | DIP-14_W7.62mm | U9 |
| 1 | USB7206C MCP4011T | SOIC-8_3.9x4.9mm_P1.27mm | U10 |
| 1 | IS43TR16256B-125KBLI LMV324DTBR2G | TSSOP-14_4.4x5mm_P0.65mm | U11 |
| 1 | 24MHZ CSTNE16M0V53L000R0 | Resonator_SMD_3Pin_3.0x1.1mm | Y1 |
| 1 | 32.7KHZ ECS-2520MV-160-CN-TR | Crystal_SMD_4Pin_2.5x2.0mm | Y2 |
| 1 | FRONT CONN | JST_XH_B6B-XH-A_1x06_P2.50mm_Vertical | J1 |
| 1 | COMMS CONN | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J2 |
| 2 | IO-XLR3-M-EH | IO-XLR3-M-EH | J3, J8 |
| 1 | 0311-0000-00001 WAVE-GEN AUX CONN | S2B-XH-A | J4 |
| 1 | 0311-0000-00001 MCU DAC OUT CONN | S2B-XH-A | J5 |
| 1 | POWER CONN | B2B-XH-A | J6 |
| 1 | 0311-0000-00001 SELECTED WAVE CONN | S2B-XH-A | J7 |
Show 70 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USB3-PORT1 SWD-TAG | Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J9 |
| 1 | TL3365AF180QG | TL3365AF180QG | SW1 |
| 1 | RM107772BCB | RM104772BCB | SW2 |
| 4 | ESDLC5V0PB8 LED | LED_0603_1608Metric | D1, D2, D4, D5 |
| 1 | ESDLC5V0PB8 S2303 | SOT-23-3 | D3 |
| 1 | 100NF 2u2 | CAP_0402 | C1 |
| 13 | 100NF 100n | CAP_0402 | C2, C5, C6, C7, C8, C9, C13, C27 +5 |
| 1 | 47UF 100n | CAP_0402 | C3 |
| 3 | 10UF 100n | CAP_0402 | C4, C17, C29 |
| 1 | 100NF 1u | CAP_0402 | C10 |
| 4 | 100NF C1812C474K5JACTU | CAP_1812 | C11, C12, C46, C47 |
| 1 | 100NF 10u | CP_EIA-3216-10_Kemet-I | C14 |
| 1 | 100NF 10n | CAP_0402 | C15 |
| 1 | 1UF C1812C474K5JACTU | CAP_1812 | C16 |
| 1 | 47PF C1812C474K5JACTU | CAP_1812 | C18 |
| 1 | 1UF 47u | CAP_EL_6.3x5.4 | C19 |
| 2 | 1UF 10u | CAP_1210 | C20, C21 |
| 1 | 1UF 1u | CAP_0805 | C22 |
| 1 | 330PF 100n | CAP_0402 | C23 |
| 3 | 100NF 1u | CAP_0603 | C24, C26, C32 |
| 1 | 100NF 4u7 | CAP_0805 | C25 |
| 1 | 1UF 100n | CAP_0402 | C28 |
| 1 | 117PF 100n | CAP_0402 | C30 |
| 1 | 1NF 1u | CAP_0603 | C31 |
| 1 | 100PF 10u | CAP_0805 | C33 |
| 1 | 100NF 10u | CAP_1210 | C34 |
| 1 | 100NF 1u | CAP_0805 | C35 |
| 1 | 1UF 1u | CAP_0603 | C37 |
| 1 | 10UF 4u7 | CAP_0805 | C38 |
| 1 | 820PF 10u | CAP_TAN_1206 | C39 |
| 1 | 100NF 3n3 | CAP_0402 | C40 |
| 1 | 100NF 10u | CAP_TAN_1206 | C43 |
| 1 | 100NF 4n7 | CAP_0402 | C44 |
| 2 | 24K 10K | RES_0402 | R1, R2 |
| 1 | 10K | RES_0402 | R3 |
| 1 | 7.5K 10K | RES_0402 | R4 |
| 2 | 10K 4K7 | RES_0402 | R5, R49 |
| 1 | 6.2K 4K7 | RES_0402 | R6 |
| 7 | 10K 100 | RES_0402 | R7, R8, R19, R20, R25, R30, R50 |
| 2 | 10K 1K | RES_0402 | R9, R11 |
| 1 | 13K 1K | RES_0402 | R10 |
| 1 | 15K 1K | RES_0402 | R12 |
| 1 | 8.2K 1K | RES_0402 | R13 |
| 1 | 4.3K 1K | RES_0402 | R14 |
| 4 | 10K 1M | RES_0402 | R15, R23, R24, R32 |
| 1 | 11K 1M | RES_0402 | R16 |
| 2 | 2.2K 1K | RES_0402 | R17, R18 |
| 2 | 160K 1M | RES_0402 | R21, R22 |
| 2 | 500 1M | RES_0402 | R26, R31 |
| 9 | 1M | RES_0402 | R27, R28, R29, R47, R51, R57, R58, R63 +1 |
| 1 | 500 3K6 | RES_0402 | R33 |
| 1 | 10K 150K | RES_0402 | R34 |
| 1 | 6.8K 2K2 | RES_0402 | R35 |
| 1 | 30K | RES_0402 | R36 |
| 1 | 9K1 | RES_0402 | R37 |
| 1 | 500 1K3 | RES_0402 | R38 |
| 1 | 500 10K | RES_0402 | R39 |
| 1 | 500 4K7 | RES_0402 | R40 |
| 1 | 10K TC33X-2-102E | Bourns_TC33X | R41 |
| 1 | 100 4K7 | RES_0402 | R42 |
| 1 | 10K TC33X-1-103E | Bourns_TC33X | R43 |
| 1 | 81K | RES_0402 | R44 |
| 1 | 100 15K | RES_0402 | R45 |
| 1 | 4K7 | RES_0402 | R46 |
| 1 | TC33X-2-102E | Bourns_TC33X | R48 |
| 1 | 10M | RES_0402 | R52 |
| 1 | TC33X-2-104E | Bourns_TC33X | R53 |
| 1 | 20K | RES_0402 | R54 |
| 4 | 1K | RES_0402 | R55, R56, R59, R60 |
| 2 | 100 | RES_0402 | R61, R62 |
Benchy Signal Generator design files
The KiCad project lives in the Daxxn/BenchyReloaded repository on GitHub; these links point at the commit this page was built from.
Benchy Signal Generator: common questions
What microcontroller does the Benchy Signal Generator use?
The Benchy Signal Generator is built around the STM32MP157FAB1, from the STM32 family.
How big is the Benchy Signal Generator PCB?
The Benchy Signal Generator measures 88 × 82 mm, has 4 copper layers and is 1.6062 mm thick.
How many components are on the Benchy Signal Generator?
141 components, from 90 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Benchy Signal Generator design files?
From the Daxxn/BenchyReloaded repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Benchy Signal Generator design in my own project?
Yes, under the terms of its AGPL-3.0 license, which Daxxn chose for the repository.
Can I test firmware for the Benchy Signal Generator 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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