Akkupack ng
eurovibes·akkupack-ng
About the Akkupack ng PCB
Akkupack ng is an open source STM32 PCB design by eurovibes, published on GitHub. It is a 4-layer board measuring 110 × 80 mm, with 139 components from 60 distinct parts.
Its main chip is the STM32F103CBT6, from the STM32 family. Other key parts include the BQ34Z100PWR-G1, 74HC164, USBLC6-2SC6, AMS1117-3.3 and XC6206PxxxMR. By type, the board carries 46 resistors, 31 capacitors, 21 diodes, 15 connectors, 12 ICs and 4 transistors.
It belongs with the wearables designs in this gallery.
From the project
A AKKU-Pack gas gauge
akkupack-ng is provided under the terms of the CERN-OHL-S license version 2 as provided in the LICENSES/CERN-OHL-S-2.0 file.
Instead of adding license boilerplates to the individual files, akkupack-ng uses SPDX license identifiers, which are machine parseable and considered legaly equivalent.
The SPDX license identifier in akkupack-ng shall be added at the first possible line in a file which can contain a comment. This is normally the first line except for scripts. Scripts require the #!PATHTOINTERPRETER tag in the first line; place the SPDX identifier into the second line.

Main components on the Akkupack ng
Akkupack ng bill of materials (BOM)
139 components, 60 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ34Z100PWR-G1 | SOP65P640X120-14N | U101 |
| 2 | 74HC164 | TSSOP-14_4.4x5mm_P0.65mm | U102, U103 |
| 1 | STM32F103CBT6 | LQFP-48_7x7mm_P0.5mm | U201 |
| 3 | USBLC6-2SC6 | SOT-23-6 | U202, U301, U401 |
| 1 | AMS1117-3.3 | SOT-223-3_TabPin2 | U203 |
| 2 | XC6206PxxxMR | SOT-23-3 | U302, U402 |
| 2 | CH330N | SOIC-8_3.9x4.9mm_P1.27mm | U303, U403 |
| 3 | 2N7002 | SOT-23 | Q101, Q201, Q501 |
| 1 | BSS84 | SOT-23 | Q502 |
| 1 | 8MHz | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y201 |
| 1 | 32k | Crystal_SMD_3215-2Pin_3.2x1.5mm | Y202 |
| 1 | 12V OUT | TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree | J101 |
| 1 | 36V IN | TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree | J102 |
| 1 | 36V OUT | TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree | J103 |
| 1 | BAT | 745-302_WAGO | J104 |
| 1 | OUT | 745-302_WAGO | J105 |
| 1 | IN | 745-302_WAGO | J106 |
| 1 | TEMP | TerminalBlock_WAGO_236-402_1x02_P5.00mm_45Degree | J107 |
| 1 | DISP | PinSocket_1x07_P2.54mm_Vertical | J201 |
| 1 | SPI | PinSocket_1x06_P2.54mm_Vertical | J203 |
Show 40 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | USB serial | USB_Micro-AB_Molex_47590-0001 | J204, J301, J401 |
| 1 | EXT I2C | Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | J205 |
| 1 | LED SW | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J501 |
| 1 | Voltage sel | PinHeader_2x03_P2.54mm_Vertical | J502 |
| 2 | 8A | PTR016V0800 | F101, F102 |
| 1 | BOOT0 | SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP201 |
| 1 | Reset | Push_SW_5x5 | SW201 |
| 1 | LED Enable | Push_SW_5x5 | SW501 |
| 1 | BZT52B5V6T | D_SOD-123F | D101 |
| 7 | RED | LED_0603_1608Metric | D102, D103, D104, D203, D204, D205, D206 |
| 3 | YLW | LED_0603_1608Metric | D105, D106, D107 |
| 4 | GRN | LED_0603_1608Metric | D108, D109, D110, D111 |
| 1 | ESD9B3.3ST5G | D_SOD-923 | D201 |
| 1 | 1N4148WS | D_SOD-323 | D202 |
| 2 | AZ23C5V6-7 | SOT-23 | D207, D208 |
| 2 | LED | LED_0603_1608Metric | D301, D401 |
| 3 | FerriteBead_Small | L_0805_2012Metric | FB201, FB301, FB401 |
| 16 | 100n | C_0402_1005Metric | C101, C102, C103, C105, C106, C203, C204, C210 +8 |
| 3 | 1µ | C_0402_1005Metric | C104, C302, C402 |
| 2 | 20p | C_0402_1005Metric | C201, C202 |
| 3 | 1F | CP_Radial_D8.0mm_P3.50mm | C205, C208, C209 |
| 2 | 10p | C_0402_1005Metric | C206, C207 |
| 1 | 10µ | C_0603_1608Metric | C214 |
| 1 | 100µ | CP_EIA-3528-21_Kemet-B | C215 |
| 2 | C | C_0805_2012Metric | C301, C401 |
| 1 | 3300p | C_1206_3216Metric | C501 |
| 4 | 10k | R_0402_1005Metric | R101, R201, R205, R211 |
| 1 | .010 20PPM | R_2512_6332Metric | R102 |
| 6 | 100 | R_0402_1005Metric | R103, R104, R218, R219, R220, R221 |
| 17 | 1k | R_0402_1005Metric | R105, R106, R107, R108, R109, R110, R111, R112 +9 |
| 3 | 1M | R_0402_1005Metric | R202, R204, R212 |
| 1 | 22 | R_1206_3216Metric | R203 |
| 2 | 4k7 | R_0402_1005Metric | R206, R207 |
| 1 | 1k5 | R_0402_1005Metric | R208 |
| 2 | 20 | R_0603_1608Metric | R209, R210 |
| 3 | 0 | R_0402_1005Metric | R213, R301, R401 |
| 1 | 100k | R_0402_1005Metric | R501 |
| 1 | 165k | R_0402_1005Metric | R502 |
| 3 | 300k .1% | R_0603_1608Metric | R504, R505, R506 |
| 1 | 16k5 .1% | R_0603_1608Metric | R507 |
Akkupack ng design files
The KiCad project lives in the eurovibes/akkupack-ng repository on GitHub; these links point at the commit this page was built from.
- Layoutakkupack-ng.kicad_pcb
- Schematicakkupack-ng.kicad_sch
Akkupack ng: common questions
What microcontroller does the Akkupack ng use?
The Akkupack ng is built around the STM32F103CBT6, from the STM32 family.
How big is the Akkupack ng PCB?
The Akkupack ng measures 110 × 80 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Akkupack ng?
139 components, from 60 distinct parts. The full bill of materials is listed on this page.
Where can I download the Akkupack ng design files?
From the eurovibes/akkupack-ng repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Akkupack ng design in my own project?
The repository has no license, so all rights stay with eurovibes. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Akkupack ng 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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