4 layers89 × 58 mm
HALMET
hatlabs/HALMET-hardware
Hat Labs Marine Engine & Tank interface hardware design files
227 parts8CC-BY-4.0
4 layers100 × 90 mm
Ball Balancing Table
Thermis-Control-Systems/Control-PCB- Size
- 100 × 90 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 99
- Nets
- 114
- Pads
- 429
- Tracks, vias
- 881, 281
- Pours
- 19
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 Aug 2025
- Updated
- 2 Oct 2025
Overview
Ball Balancing Table is an open-source printed circuit board by Thermis-Control-Systems, from the Thermis-Control-Systems/Control-PCB repository on GitHub. It is a 4-layer board of 100 × 90 mm with 99 parts on 114 nets, routed with 881 tracks and 281 vias.
It is built around the CH340C, ESP32-WROOM-32E-N16 and DRV8873SPWPRQ1, with the 74HC138, SN74LVC8T245PW and USBLC6-2SC6 among its other parts. Its parts include 32 capacitors, 23 resistors, 21 connectors, 14 ICs and 7 switches. It belongs with the ESP32 boards of this library.
Main components
7
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
ESP32-WROOM-32E-N16
WIFI-SMD-40℃~+85℃ -98dBm 112mA 2.4GHz 20dBm 239mA 3V~3.6V Bluetooth4.2 ESP32-DOWD-V3 On-board PCB Antenna UART、SDIO、SPI、I2C、GPIO、ADC、DAC、Ethernet、TWAI SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
DRV8873SPWPRQ1
HTSSOP-24-EP-40℃~+125℃ 10A 10uA 150mΩ 4.5V~38V SPI Yes HTSSOP-24-EP Brushed DC Motor Drivers ROHSTexas InstrumentsStepper Motor Driver74HC138
SOP-160℃~+70℃ 24ns@5.0V,16pF 2V~6V 3/8 5.2mA 5.2mA 5uA 74HC Decoder Reverse function Single Supply SOP-16 Signal Switches, Multiplexers, Decoders ROHSGRSignal Switches, Multiplexers, Decoders
SN74LVC8T245PW
TSSOP-24-40℃~+85℃ 1 1.65V~5.5V 1.65V~5.5V 8 Bidirectional CMOS CMOS Tri-State TSSOP-24 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
README
README.mdControl-PCB
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | Conn_01x01 | Connector_Wire:SolderWirePad_1x01_SMD_5x10mm | J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16, J17, J20, J21 |
| 10 | 100nF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C5, C7, C14, C16, C18, C19, C23, C30, C32 |
| 6 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1, C2, C4, C6, C20, C21 |
| 6 | SW_SPST | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1, SW2, SW4, SW5, SW6, SW7 |
| 5 | 10K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R4, R5, R15, R17, R23 |
| 4 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C12, C26, C28 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C9, C24, C25 |
| 4 | 500R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R10, R20, R22 |
| 3 | 1uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C15, C17, C22 |
| 3 | ADC121S021CIMF/NOPB | ADC_CUSTOM:DBV0006A_N | U8, U9, U10 |
| 2 | 0R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R18 |
| 2 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R21 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13, C29 |
| 2 | 47nF X7R | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11, C27 |
| 2 | 5.1K | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R2, R3 |
| 2 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | J18, J19 |
| 2 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Horizontal | J2, J3 |
| 2 | DNC | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R19 |
| 2 | DRV8873SPWPR | driver_motor_custom:SOP65P640X120-25N | IC1, IC2 |
| 2 | MCP4922-ESL | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U6, U7 |
| 2 | SS8050 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 100k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11 |
| 1 | 110k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R13 |
| 1 | 220k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R12 |
| 1 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C31 |
| 1 | 250m | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R1 |
| 1 | 27k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R16 |
| 1 | 56k | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R14 |
| 1 | 74HC138 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U12 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J4 |
| 1 | ESP32-WROOM-32E-N16 | RF_Module:ESP32-WROOM-32D | U4 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | NCP1117-5.0_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | SN74LVC8T245 | Package_SO:TSSOP-24_4.4x7.8mm_P0.65mm | U11 |
| 1 | SW_SPDT | switch_tht_custom:SW-TH_MT-0-102-C003-N003-RS | SW3 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
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Questions
How big is the Ball Balancing Table PCB?
It measures 100 × 90 mm and has 4 copper layers, 1.61 mm thick.
What parts does the Ball Balancing Table use?
99 parts, built around the CH340C, ESP32-WROOM-32E-N16, DRV8873SPWPRQ1 and 74HC138. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Ball Balancing Table KiCad files?
From the Thermis-Control-Systems/Control-PCB repository on GitHub, at the commit this page was made from: the board is Ball Balancing Table.kicad_pcb and its schematic Ball Balancing Table.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ball Balancing Table design in my own project?
Its repository states no licence, so its author keeps all rights: ask Thermis-Control-Systems before reusing the design.