Smart-Charger-Hardware
About the Smart-Charger-Hardware PCB
Smart-Charger-Hardware is an open source STM32 PCB design by choreboy17240, published on GitHub under the MIT license. It is a 2-layer board measuring 75 × 55 mm, with 58 components from 40 distinct parts.
Its main chip is the C431631, from the STM32 family. Other key parts include the C73012, C63821, C191581, R-78E3.3-0.5 and C138706. By type, the board carries 20 resistors, 13 capacitors, 8 diodes, 6 ICs, 6 connectors and 2 inductors.
It belongs with the power & battery and sensors designs in this gallery.
From the project
Hardware design files for an STM32-based intelligent battery charger/control module
This repository contains the design files for a Battery On-Board Charger, a DC-DC converter designed to safely charge sealed lead-acid (SLA) batteries from external power sources. The system operates as a buck-boost converter with intelligent microcontroller control for charge management.
Please see the accompanying software repository on GitHub for an example Arduino STM32 application that can be built under PlatformIO and used to program the on-board STM32 micro using an ST-Link programmer. Programming is done using a custom"SWD-Lite" interface that I use for compact, low-cost projects.…
Main components on the Smart-Charger-Hardware
Smart-Charger-Hardware bill of materials (BOM)
58 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C73012 XL6008 XLSEMI | TO-252-5L_TabPin3_Hand_Solder | U1 |
| 1 | C63821 LM339 On Semi | SOIC-14_3.9x8.7mm_P1.27mm | U2 |
| 1 | C191581 MCP4726A0 Microchip | SOT-23-6 | U3 |
| 1 | R-78E3.3-0.5 | Converter_DCDC_RECOM_R-78E-0.5_THT | U4 |
| 1 | C431631 STM32G030K8T6 ST Micro | LQFP-32_7x7mm_P0.8mm | U5 |
| 1 | C138706 INA219AIDR TI | SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | MMBT3906 Panjit International | SOT-23_Handsolder_Large_Pads | Q1 |
| 1 | Tnisesm 01x03 Tnisesm | TerminalBlock_Tnisesm_Screw_1x03_P5.00mm | J2 |
| 1 | SWD_LITE_1X4_HEADER_THT SWD_Lite_1x4_Header_THT | PinHeader_1x04_P2.54mm_Vertical | J3 |
| 2 | Tnisesm 01x02 Tnisesm | TerminalBlock_Tnisesm_Screw_1x02_P5.00mm | J5, J7 |
| 1 | UART PORT | PinHeader_1x04_P2.54mm_Vertical | J8 |
| 1 | C2897367 OLED DISPLAY HCTL | PinSocket_1x04_P2.54mm_Vertical | J9 |
| 1 | C32429 NS_SRS_SPDT Ningbo Songle | Relay_SPDT_Songle_Miniature_SRS | K1 |
| 1 | 3362P-1-223LF 20K Bourns | Potentiometer_Bourns_3362P_Vertical | RV1 |
| 3 | C412514 B360AE Diodes Inc | D_SMA_Handsoldering | D1, D2, D6 |
| 3 | C235771 3.3V On Semi | D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D3, D7, D8 |
| 1 | 1N4148WS Multiple | D_SOD-323_HandSoldering | D4 |
| 1 | LED_BGAR Chanzon | LED_D5.0mm-4_RGB_Staggered_Pins | D5 |
| 2 | C408491 47uH Sunlord | L_SMD_Sunlord_MWSA1004S_10.0x11.5mm | L1, L2 |
| 1 | C7472372 22uF/63V NCC | CP_Elec_6.3x7.7 | C1 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C444884 1uF/50V Samsung | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2, C5 |
| 1 | C133440 220uF/25V NCC | CP_Radial_D8.0mm_P3.50mm | C3 |
| 1 | C445256 47uF/50V Nichicon | CP_Elec_6.3x7.7 | C4 |
| 3 | C49678 0.1uF/50V Yageo | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C6, C7, C13 |
| 2 | C89632 10uF/50V Samsung | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C8, C9 |
| 2 | C527347 0.1uF/25V Yageo | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C10, C12 |
| 1 | C51205 4.7uF/50V Samsung | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C11 |
| 2 | 4.7K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1, R4 |
| 2 | 39K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3 |
| 4 | 10K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R5, R7, R10, R13 |
| 1 | 470 Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R6 |
| 1 | 2.9K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R8 |
| 1 | 1.2K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R9 |
| 1 | 1M Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11 |
| 1 | 1K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12 |
| 3 | TBD Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R14, R15, R16 |
| 1 | 24K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R17 |
| 1 | 3.3K Various | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R18 |
| 1 | 0.1 Ohm Various | R_1210_3225Metric_Pad1.30x2.65mm_HandSolder | R20 |
| 1 | C110924 4x10K Yageo | RN_Array_4x0603 | RN1 |
Smart-Charger-Hardware design files
The KiCad project lives in the choreboy17240/Smart-Charger-Hardware repository on GitHub; these links point at the commit this page was built from.
Smart-Charger-Hardware: common questions
What microcontroller does the Smart-Charger-Hardware use?
The Smart-Charger-Hardware is built around the C431631, from the STM32 family.
How big is the Smart-Charger-Hardware PCB?
The Smart-Charger-Hardware measures 75 × 55 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Smart-Charger-Hardware?
58 components, from 40 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 Smart-Charger-Hardware design files?
From the choreboy17240/Smart-Charger-Hardware 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 Smart-Charger-Hardware design in my own project?
Yes, under the terms of its MIT license, which choreboy17240 chose for the repository.
Can I test firmware for the Smart-Charger-Hardware 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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