BMS Sensor
About the BMS Sensor PCB
BMS Sensor is an open source AVR/Arduino PCB design by weaslepalace, published on GitHub. It is a 2-layer board measuring 80 × 30 mm, with 44 components from 19 distinct parts.
Its main chip is the ATTINY426-MFR, from the AVR/Arduino family. Other key parts include the AP7383-50WR-7, LTV-817S-TA1, ISO1050DUBR, MCP2515T-I/ST and REF3040AIDBZR. By type, the board carries 14 capacitors, 11 resistors, 7 ICs, 6 diodes, 5 connectors and 1 transformer.
It belongs with the power & battery and sensors designs in this gallery.
From the project
Monorepo for PCB design stuff
Main components on the BMS Sensor
BMS Sensor bill of materials (BOM)
44 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP7383-50WR-7 ~ Diodes Incorporated | Diodes_SOT25 | U101 |
| 2 | LTV-817S-TA1 ~ Lite-On Inc. | LiteOn_LTV817S_SMD4 | U102, U103 |
| 1 | ISO1050DUBR ~ Texas Instruments | TI_SOP8-DUB | U104 |
| 1 | MCP2515T-I/ST ~ Microchip Technology | Microchip_TSSOP20 | U105 |
| 1 | ATTINY426-MFR ~ Microchip Technology | Microchip_VQFN20 | U106 |
| 1 | REF3040AIDBZR ~ Texas Instruments | TI_SOT_23_3 | U107 |
| 1 | PH1-5-UA ~ Adam Tech | Header_1x5 | J101 |
| 2 | RC02015 ~ RCH | RCH_RC02015 | J102, J103 |
| 1 | TC2030-PKT-ICESPI-NL ~ TagConnect | Tag-Connect_6Pin-No-Legs | J104 |
| 1 | 2059-301/998-403 ~ WAGO Corporation | 2059-301_998-403 | J105 |
| 1 | MA021G00 ~ CND-tek | T_MA21G00 | T101 |
| 5 | MA021G00 ~ CND-tek | SOD-123FL | D101, D102, D103, D104, D106 |
| 1 | NCD0805R1 RED Foshan NationStar Optoelectronics | LiteOn_LED0805 | D105 |
| 5 | GCJ188R71E105KA01D 1uF Murata Electronics | C_0603 | C101, C102, C109, C110, C111 |
| 9 | GCJ188R72A104KA01D 100nF Murata Electronics | C_0603 | C103, C104, C105, C106, C107, C108, C112, C113 +1 |
| 4 | RC0603FR-07100RL 100 YAGEO | R_0603 | R101, R107, R110, R111 |
| 5 | RC0603FR-0710KL 10k YAGEO | R_0603 | R102, R103, R104, R105, R106 |
| 1 | RC0603FR-07422KL 422k YAGEO | R_0603 | R108 |
| 1 | NTCG164KF104FT1 100k TDK Corporation | C_0603 | R109 |
BMS Sensor design files
The KiCad project lives in the weaslepalace/boards repository on GitHub; these links point at the commit this page was built from.
BMS Sensor: common questions
What microcontroller does the BMS Sensor use?
The BMS Sensor is built around the ATTINY426-MFR, from the AVR/Arduino family.
How big is the BMS Sensor PCB?
The BMS Sensor measures 80 × 30 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the BMS Sensor?
44 components, from 19 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 BMS Sensor design files?
From the weaslepalace/boards 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 BMS Sensor design in my own project?
The repository has no license, so all rights stay with weaslepalace. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the BMS Sensor without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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