4 layers158 × 95 mm
FHNW Pro4E FS19T8-3DPrinterBoard STM32
mnemocron/FHNW-Pro4E-FS19T8-3DPrinterBoard-STM32
Marlin 2.0 compatible 3D printer board based on STM32F103 (KiCad)
264 parts17GPL-3.0
2 layers
Gauge driver
bookofthefuture/ev-gauge4SoC, temp and delta gauge pulling data from SimpBMS over CANbus. For ESP32.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 48
- Pads
- 112
- Tracks, vias
- 0, 0
- Routed
- Not yet
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Jun 2022
- Updated
- 1 Oct 2026
Overview
Gauge driver is an open-source printed circuit board by bookofthefuture, from the bookofthefuture/ev-gauge repository on GitHub. It is a 2-layer board with 18 parts on 48 nets.
It is built around the ESP32-WROOM-32E, SN65HVD230D and LM2675M-3.3. Its parts include 6 capacitors, 5 resistors, 3 ICs, 1 diode and 1 connector. It belongs with the interfaces and adapters boards and the ESP32 boards of this library.
Main components
3
ESP32-WROOM-32E
SMD,18x25.5mmSMD,18x25.5mm WiFi Modules ROHSEspressif SystemsWiFi Modules
SN65HVD230D
SOIC-8-40℃~+85℃ 1 17mA 1Mbps 370uA 3V~3.6V CAN Transceiver Low-power mode、Wake-up function、ESD protection、Thermal shutdown protection、Bus fault protection、Hot-swap protection SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN TransceiversLM2675M-3.3
SOIC-8SOIC-8 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
README
README.mdev-gauge
SoC, motor amps, motor/pack temp, 12V aux voltage, car mode and Zombieverter error data over CANbus, on a single mode-aware display. For ESP32.
Copy ev_gauge/secrets.h.example to ev_gauge/secrets.h and fill in your home WiFi
SSID/password before flashing - the gauge runs its own gaugedriver AP and joins that
network at the same time, so OTA updates work both standalone and from your desk.
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | R | Resistor_SMD:R_0603_1608Metric | R2, R3, R4 |
| 2 | C_Polarized | Capacitor_SMD:CP_Elec_6.3x3 | C5, C6 |
| 1 | 0.1uF | Capacitor_SMD:C_0201_0603Metric | C2 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 1uF | Capacitor_SMD:C_0201_0603Metric | C3 |
| 1 | 22uF | Capacitor_SMD:C_0201_0603Metric | C1 |
| 1 | C | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | Conn_01x02_Socket | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | J1 |
| 1 | Crystal | Crystal:Crystal_HC18-U_Vertical | Y1 |
| 1 | D_Schottky | Diode_SMD:D_2114_3652Metric | D1 |
| 1 | ESP32-WROOM-32E | RF_Module:ESP32-WROOM-32D | U1 |
| 1 | L | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | LM2675M-3.3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | SN65HVD230 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
Questions
What parts does the Gauge driver use?
18 parts, built around the ESP32-WROOM-32E, SN65HVD230D and LM2675M-3.3. 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 Gauge driver KiCad files?
From the bookofthefuture/ev-gauge repository on GitHub, at the commit this page was made from: the board is kicad/gauge-driver/gauge-driver.kicad_pcb and its schematic kicad/gauge-driver/gauge-driver.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Gauge driver design in my own project?
Its repository states no licence, so its author keeps all rights: ask bookofthefuture before reusing the design.
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