Batt Rev21
About the Batt Rev21 PCB
Batt Rev21 is an open source PCB design by curtisseizert, published on GitHub. It is a 2-layer board measuring 120 × 100 mm, with 53 components from 21 distinct parts.
Other key parts include the BQ77915-08. By type, the board carries 24 resistors, 9 transistors, 8 capacitors, 4 battery holders, 4 diodes and 2 connectors.
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 Batt Rev21
Batt Rev21 bill of materials (BOM)
53 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ77915-08 | TSSOP-24_4.4x7.8mm_P0.65mm | U1 |
| 4 | BSS123 | SOT-23 | Q1, Q4, Q6, Q7 |
| 3 | SiS862ADN | Vishay_PowerPAK_1212-8_Single | Q2, Q3, Q9 |
| 1 | BSS84 | SOT-23 | Q5 |
| 1 | SiS443DN | Vishay_PowerPAK_1212-8_Single | Q8 |
| 1 | Molex Micro-Fit 3.0 44764-0601 | Molex_Micro-Fit_3.0_44764-0601-0600_2x03_P3.00mm_Horizontal | J1 |
| 1 | Micro-Fit 3.0 43650-0310 | Molex_Micro-Fit_3.0_43650-0310_1x03-1MP_P3.00mm_Horizontal | J2 |
| 4 | Battery_Cell | BatteryHolder_Keystone246_21700 | BT1, BT2, BT3, BT4 |
| 1 | 103-AT | R_0603_1608Metric_Outline | TH1 |
| 1 | RB751V40 | D_SOD-323 | D1 |
| 3 | DZ2S100X0L | D_SOD-523 | D2, D3, D4 |
| 6 | 1uF | C_0603_1608Metric | C1, C2, C3, C4, C5, C8 |
| 2 | 0.1uF | C_0603_1608Metric | C6, C7 |
| 6 | 1k | R_0603_1608Metric_Outline | R1, R6, R11, R14, R21, R22 |
| 4 | 33R | R_0603_1608Metric_Outline | R2, R3, R4, R5 |
| 1 | 0R01 | R_1206_3216Metric | R7 |
| 2 | 100R | R_0603_1608Metric_Outline | R8, R9 |
| 7 | 1M | R_0603_1608Metric_Outline | R10, R12, R15, R18, R20, R23, R24 |
| 2 | 10k | R_0603_1608Metric_Outline | R13, R17 |
| 1 | 100k | R_0603_1608Metric_Outline | R16 |
Show 1 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 470k | R_0603_1608Metric_Outline | R19 |
Batt Rev21 design files
The KiCad project lives in the curtisseizert/Nanovoltmeter repository on GitHub; these links point at the commit this page was built from.
Batt Rev21: common questions
How big is the Batt Rev21 PCB?
The Batt Rev21 measures 120 × 100 mm, has 2 copper layers and is 0.57 mm thick.
How many components are on the Batt Rev21?
53 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Batt Rev21 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 Batt Rev21 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.
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