NV-Meter rev b
About the NV-Meter rev b PCB
NV-Meter rev b is an open source STM32 PCB design by curtisseizert, published on GitHub. It is a 6-layer board measuring 150 × 100 mm, with 489 components from 141 distinct parts.
Its main chip is the STM32U575RIT6Q, from the STM32 family. Other key parts include the LTC6081xMS8, 74LVC4245A, x, TLP2372(V4-TPL,E and PE4140B-Z. By type, the board carries 177 resistors, 171 capacitors, 50 ICs, 27 diodes, 25 transistors and 22 inductors.
It belongs with the power & battery and test & measurement designs in this gallery.
From the project
A low noise nanovoltmeter design files and code
The design includes five boards: 1. The nanovoltmeter main board 2. A SMPS daughter board to downconvert the battery voltage to the various power rails used in the design 3. A battery board with BMS for 4S 21700 cells 4. A rear panel board with battery charger 5. A front panel
This repository will also include the source code for the STM32U575 microcontroller that interfaces with the various peripherals.
Main components on the NV-Meter rev b
NV-Meter rev b bill of materials (BOM)
489 components, 141 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LTC6081xMS8 | MSOP-8_3x3mm_P0.65mm | U1 |
| 1 | 74LVC4245A | Texas_RGY_R-PVQFN-N24_EP2.05x3.1mm | U2 |
| 1 | x LT3093xMSE | MSOP-12-1EP_3x4mm_P0.65mm_EP1.65x2.85mm_ThermalVias_opt | U3 |
| 1 | x USBLC6-2SC6 | SOT-23-6_red | U4 |
| 1 | x FT230XQ | QFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U5 |
| 3 | TLP2372(V4-TPL,E TLP2372 | SO-5_4.4x3.6mm_P1.27mm | U6, U7, U12 |
| 2 | PE4140B-Z PE4140 | DFN-6-1EP_3x3mm_P0.95mm_EP1.20x2.00mm | U8, U14 |
| 6 | x OPA2191 | MSOP-8_3x3mm_P0.65mm | U9, U13, U20, U23, U27, U40 |
| 1 | ADA4625-1ARDZ-R7 ADA4625-1 | SOIC-8-EP_3.9x4.9mm_P1.27mm_EP2.29x2.29mm | U10 |
| 2 | LT3042EMSE#PBF LT3042EMSE | MSOP-10EP-3x3_P0.5mm_EP_thermal_vias_opt | U11, U15 |
| 3 | SN74AUC1G32DRLR 74AUC1G32 | SOT-553 | U16, U17, U38 |
| 1 | x LM4040DBZ-2.0 | SOT-23 | U18 |
| 3 | TMP117MAIDRVR TMP117 | WSON-6-1EP_2x2mm_P0.65mm | U19, U22, U28 |
| 3 | TMUX4053BQBR TMUX4053 | Texas_WQFN-N16_2.5x3.5mm_EP2.0x1.0mm | U21, U32, U39 |
| 1 | SN74AUC1G79DCKR 74AUC1G79 | SOT-353_SC-70-5 | U24 |
| 1 | STM32U575RIT6Q | LQFP-64_10x10mm_P0.5mm | U25 |
| 2 | TLV2333 | MSOP-8_3x3mm_P0.65mm | U26, U45 |
| 1 | SN74AUC1G08DRLR 74AUC1G08 | SOT-553 | U29 |
| 1 | TLV1822DR TLV1822D | SOIC-8_3.9x4.9mm_P1.27mm | U30 |
| 1 | SN74AUC1G00DRLR 74AUC1G00 | SOT-553 | U31 |
Show 121 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | OPA2205 | MSOP-8_3x3mm_P0.65mm | U33, U36, U42 |
| 1 | ADA4807-2ACPZ-R7 ADA4807-2ACP | DFN-10-1EP_3x3mm_P0.5mm_EP1.65x2.38mm | U34 |
| 1 | THP210 | SOIC-8_3.9x4.9mm_P1.27mm | U35 |
| 1 | AD4032-24BBCZ AD4032-24 | BGA-64_8x8_7.0x7.0mm | U37 |
| 1 | ADR1399 | TO-46-4_Window | U41 |
| 1 | x LTC6655BHLS8-5 | LS8 | U43 |
| 1 | AD5686BCPZ-RL7 AD5686BCPZ | QFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U44 |
| 2 | TMUX1101DCKR TMUX1101 | SOT-353_SC-70-5 | U46, U47 |
| 1 | LP2985-2.5 | SOT-23-5 | U48 |
| 2 | TPS7A2018PDQN | Texas_X2SON-4_1x1mm_P0.65mm | U49, U50 |
| 2 | CPC3902ZTR CPC3902 | SOT-223-3_TabPin2 | Q1, Q2 |
| 1 | x SiS862ADN | Vishay_PowerPAK_1212-8_Single | Q3 |
| 4 | x JFE2140 | SOIC-8_3.9x4.9mm_P1.27mm | Q4, Q8, Q10, Q11 |
| 2 | x BSS84 | SOT-23 | Q5, Q23 |
| 2 | x SiS443DN | Vishay_PowerPAK_1212-8_Single | Q6, Q15 |
| 4 | x MMBT3904 | SOT-23 | Q7, Q17, Q22, Q24 |
| 1 | x HN4A51J | SOT-23-5_red | Q9 |
| 1 | x MMBT3906 | SOT-23 | Q12 |
| 2 | x MMBF4117 | SOT-23 | Q13, Q14 |
| 2 | x FZT951 | SOT-223-3_TabPin2 | Q16, Q21 |
| 1 | x HN4C51J | SOT-23-5_red | Q18 |
| 2 | x MBT6429 | SOT-363_SC-70-6 | Q19, Q20 |
| 1 | x MMBFJ111 | SOT-23 | Q25 |
| 1 | ECS-327MVATX-2-CN | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X1 |
| 1 | ECS-2520MVLC-240-BN | Oscillator_SMD_ECS_2520MV-xxx-xx-4Pin_2.5x2.0mm | X2 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | PWR_HDR | PinHeader_2x05_P2.54mm_Vertical | J2 |
| 2 | BMI-S-210-F BMI-S-210 | Laird_Technologies_BMI-S-210-F_44.00x30.50mm | J3, J10 |
| 2 | Conn_Coaxial | SMB_Jack_Vertical | J4, J5 |
| 1 | TC2030 | Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J6 |
| 2 | BMI-S-230-F BMI-S-230 | Laird_Technologies_BMI-S-230-F_50.8x38.1mm | J7, J11 |
| 1 | MUSBK15230 | USB_MicroAB_Amphenol_MUSBK15230 | J8 |
| 1 | Conn_Coaxial | SMA_Amphenol_132203-12_Horizontal | J9 |
| 1 | 2027-07-ALF 2027-07 | C_Rect_L16.5mm_W8.7mm_P15.00mm_MKT | GD1 |
| 3 | G6KU-2G-Y-DC4.5 | Relay_DPDT_Omron_G6K-2G-Y | K1, K2, K3 |
| 3 | DZ2S100X0L | D_SOD-523 | D1, D6, D18 |
| 1 | HPZR-C18-QX | D_SOD-123F | D2 |
| 7 | BAV199 | SOT-23 | D3, D4, D16, D23, D24, D25, D27 |
| 1 | HPZR-C12X | D_SOD-123F | D5 |
| 1 | LED | PinHeader_1x02_P1.27mm_Vertical | D7 |
| 6 | BAS40-04W,115 BAS40-04 | SOT-323_SC-70 | D8, D10, D14, D17, D19, D20 |
| 1 | ESDA6V1-5SC6 | SOT-23-6_red | D9 |
| 1 | MBR0520 | D_SOD-123 | D11 |
| 2 | BAT15-03W | D_SOD-323 | D12, D13 |
| 2 | MMSZ5231C-E3-08 MMSZ5231B | D_SOD-123F | D15, D21 |
| 1 | BAV199DW | SOT-363_SC-70-6 | D22 |
| 1 | BZX585-C5V6,135 | D_SOD-523 | D26 |
| 4 | MU1608-301Y 782632121 | R_0603_1608Metric_red | FB1, FB2, FB3, FB4 |
| 7 | MG1608-101Y | R_0603_1608Metric_red | FB5, FB6, FB7, FB8, FB11, FB17, FB19 |
| 10 | MU1608-301Y | R_0603_1608Metric_red | FB9, FB10, FB12, FB13, FB14, FB15, FB16, FB18 +2 |
| 1 | ILSB1206ER4R7K 4.7uH/0R900 | L_1206_3216Metric | L1 |
| 1 | GRM31A5C2H470JW01D 33pF/500V | C_1206_3216Metric_Red | C1 |
| 7 | GCM1885C2A470JA16J 47pF | C_0603_1608Metric_red_outline | C2, C7, C9, C13, C47, C56, C57 |
| 7 | TR3B106K025C0450 10uF/16V | CP_EIA-3528-12_Kemet-T | C3, C10, C18, C21, C40, C43, C124 |
| 2 | 10uF/25V | C_1210_3225Metric | C4, C20 |
| 2 | 10uF/25V | CP_EIA-3528-12_Kemet-T_Kelvin | C5, C11 |
| 24 | GCM1555C1H471JA16D 470pF | C_0402_1005Metric | C6, C14, C33, C63, C70, C76, C78, C80 +16 |
| 5 | GRM31C5C1E474JE01L 470nF | C_1206_3216Metric_Red | C8, C34, C127, C133, C155 |
| 1 | GRM1555C1H221JA01J 10uF/25V | C_1210_3225Metric | C12 |
| 6 | GRM1555C1H221JA01J 220pF | C_0402_1005Metric | C15, C17, C23, C26, C27, C148 |
| 2 | 100nF | C_1206_3216Metric_Red | C16, C22 |
| 1 | GRM1555C1H221JA01J 10uF/25V | CP_EIA-3528-12_Kemet-T_Kelvin | C19 |
| 41 | CL05B105KB54PNC 0.1uF X7R | C_0402_1005Metric | C24, C28, C44, C45, C49, C55, C58, C59 +33 |
| 29 | GRT155R61A475ME13 4.7uF X5R | C_0402_1005Metric | C25, C39, C41, C42, C50, C51, C54, C67 +21 |
| 6 | GRM1555C1H272GE01D 2.7nF | C_0402_1005Metric | C29, C30, C32, C36, C88, C151 |
| 11 | F951C476MBAAQ2 47uF/16V | CP_EIA-3528-12_AVX_B_Conformal | C31, C35, C46, C91, C110, C111, C122, C129 +3 |
| 4 | T491A105K035AT7280 1uF | CP_EIA-3216-18_Kemet-A | C37, C38, C141, C159 |
| 1 | 100pF | C_0402_1005Metric | C48 |
| 6 | 10nF | C_0603_1608Metric_red_outline | C52, C64, C74, C87, C89, C156 |
| 2 | T491A106K020AT 10uF | CP_EIA-3216-18_Kemet-A | C53, C134 |
| 1 | GRM1555C1H100JA01D 10pF | C_0402_1005Metric | C62 |
| 2 | CL05B105KB54PNC 10nF | C_0603_1608Metric_red_outline | C65, C71 |
| 1 | GRM1555C1H102JA01J 10nF | C_0603_1608Metric_red_outline | C75 |
| 2 | GRM2165C1H333JA01J 33nF C0G | C_0805_2012Metric_Red_outline | C85, C86 |
| 5 | GRM1555C1H102JA01J 1nF | C_0402_1005Metric | C96, C103, C107, C131, C136 |
| 1 | 25MU225MB23225 3.3uF/Acrylic | C_1210_3225Metric | C153 |
| 1 | GRT155R61A475ME13 470nF | C_1206_3216Metric_Red | C154 |
| 1 | 220R | R_1206_3216Metric_red | R1 |
| 2 | RR0510P-3012-D 30k1 | R_0402_1005Metric | R2, R88 |
| 8 | MCS04020C2003FE000 200k | R_0402_1005Metric | R3, R11, R13, R40, R86, R93, R101, R102 |
| 1 | CPF-A-0805B25KE 25k 0.1% | R_0805_2012Metric_red | R4 |
| 7 | RR0510P-102-D 1k | R_0402_1005Metric | R5, R24, R92, R120, R123, R136, R151 |
| 18 | RR0510R-330-D 33R | R_0402_1005Metric | R6, R7, R15, R43, R44, R49, R50, R51 +10 |
| 1 | RR0816Q-240-D 24R | R_0603_1608Metric_red | R8 |
| 1 | RR0816P-2491-D-39H 2k49 | R_0603_1608Metric_red | R9 |
| 14 | RT0402FRE0710KL 10k | R_0402_1005Metric | R10, R12, R28, R30, R42, R82, R84, R87 +6 |
| 4 | MFL0603R1000FB 0R1 | R_0603_1608Metric_red | R14, R23, R39, R41 |
| 29 | RR0510R-101-D 100R | R_0402_1005Metric | R16, R52, R53, R57, R69, R76, R78, R79 +21 |
| 2 | Y40235K00000Q9R 5k FRSM | R_1206_3216Metric_red | R17, R21 |
| 1 | Y16255R00000D9W 5R VSMP | R_1206_3216Metric_red | R18 |
| 1 | Y402250R0000A9R 50R FRSM | R_0805_2012Metric_red | R19 |
| 1 | RT0603DRE075R05L 5R1 | R_0603_1608Metric_red | R20 |
| 1 | RR1220P-753-D 75k 0.1% | R_0805_2012Metric_red | R22 |
| 3 | X 200R 0.1% | R_0805_2012Metric_red | R25, R26, R29 |
| 6 | RC0402JR-7D220RL 220R | R_0402_1005Metric | R27, R37, R47, R58, R59, R81 |
| 2 | RG2012P-4992-B-T5 49k9 0.1% | R_0805_2012Metric_red | R31, R33 |
| 4 | RR0510P-752-D 7k5 | R_0402_1005Metric | R32, R34, R35, R36 |
| 1 | X 4k7 0.1% | R_0805_2012Metric_red | R38 |
| 3 | RR0816Q-49R9-D-68R 49R9 | R_0603_1608Metric_red | R45, R90, R154 |
| 5 | RR0510R-680-D 68R | R_0402_1005Metric | R46, R48, R60, R61, R75 |
| 5 | RR0510P-222-D 2k2 | R_0402_1005Metric | R62, R112, R114, R133, R134 |
| 1 | RS73F2BTTD1744B 1M74 | R_1206_3216Metric_red | R70 |
| 2 | RT0603FRE07499KL 499k | R_0603_1608Metric_red | R71, R89 |
| 1 | RR0816P-2053-D-31D 205k | R_0603_1608Metric_red | R72 |
| 1 | RR0510P-222-D 499R | R_0603_1608Metric_red | R73 |
| 7 | RC0402FR-7W1ML 1M | R_0402_1005Metric | R74, R77, R80, R121, R137, R146, R147 |
| 1 | RG3216P-1002-B-T1 10k | R_1206_3216Metric_red | R83 |
| 2 | X 133R | R_0603_1608Metric_red | R91, R100 |
| 11 | RT0402FRE0722KL 22k | R_0402_1005Metric | R94, R97, R98, R99, R103, R122, R124, R127 +3 |
| 6 | RT0402FRE07100KL 100k | R_0402_1005Metric | R95, R117, R119, R143, R144, R153 |
| 2 | X 10M | R_0603_1608Metric_red | R96, R104 |
| 2 | RR0510R-100-D 10R | R_0402_1005Metric | R132, R135 |
| 2 | DNP | R_1206_3216Metric_red | R155, R157 |
| 1 | KRL1220E-M-R100-F-T5 0R1 | R_0805_2012Metric | R156 |
| 2 | MPMT1003AT5 100k/100k | SOT-23 | RN1, RN15 |
| 2 | CAY10-101J4LF 100R | R_Array_Convex_4x0402 | RN2, RN3 |
| 2 | CAY10-330J4AS 33R | R_Array_Convex_4x0402 | RN4, RN5 |
| 1 | x 2k211/5k | R_Divider_VFD244 | RN6 |
| 2 | EXB-28V103JX 10k | R_Array_Convex_4x0402 | RN7, RN8 |
| 7 | ACASA1003U1003P1AT 100k | R_Array_Convex_4x0603 | RN9, RN10, RN11, RN13, RN14, RN16, RN17 |
| 1 | LT5401AIMSE#PBF LT5401A | MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm | RN12 |
NV-Meter rev b design files
The KiCad project lives in the curtisseizert/Nanovoltmeter repository on GitHub; these links point at the commit this page was built from.
NV-Meter rev b: common questions
What microcontroller does the NV-Meter rev b use?
The NV-Meter rev b is built around the STM32U575RIT6Q, from the STM32 family.
How big is the NV-Meter rev b PCB?
The NV-Meter rev b measures 150 × 100 mm, has 6 copper layers and is 1.266 mm thick.
How many components are on the NV-Meter rev b?
489 components, from 141 distinct parts. The full bill of materials is listed on this page.
Where can I download the NV-Meter rev b design files?
From the curtisseizert/Nanovoltmeter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the NV-Meter rev b design in my own project?
The repository has no license, so all rights stay with curtisseizert. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the NV-Meter rev b 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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