4 layers198.1 × 130.8 mm
2 layers101.2 × 76.6 mm
Dual Axis Solar Tracker
jsitech4/Projects- Size
- 101.2 × 76.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 80
- Nets
- 68
- Pads
- 254
- Tracks, vias
- 557, 203
- Pours
- 15
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 6 Oct 2025
- Updated
- 4 Nov 2026
Overview
Dual Axis Solar Tracker is an open-source printed circuit board by jsitech4, from the jsitech4/Projects repository on GitHub. It is a 2-layer board of 101.2 × 76.6 mm with 80 parts on 68 nets, routed with 557 tracks and 203 vias.
It is built around the CH340C, ESP32-WROOM-32 and AMS1117-3.3, with the GBU8M and UMH3N among its other parts. Its parts include 22 capacitors, 21 resistors, 12 diodes, 7 connectors and 4 ICs. It belongs with the power boards and the ESP32 boards of this library.
Main components
5
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-32
SMD,18x25.5mm-40℃~+85℃ -98dBm 2.4GHz 2.7V~3.6V 20dBm Bluetooth4.2 ESP32-DOWDQ6 UART、SDIO、SPI、I2C、GPIO、PWM、ADC、DAC SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
GBU8M
GBU-55℃~+150℃@(Tj) 1V@4A 1kV 200A 5uA 8A Single-Phase Rectifier GBU Bridge Rectifiers ROHSLeshan Radio (LRC)Bridge Rectifiers
UMH3N
SOT-363-55℃~+150℃ 0.5uA 100 100mA 150mW 2 NPN (Pre-Biased) 250MHz 300mV 50V 5V 6.11kΩ NPN SOT-363 Digital Transistors ROHSJiangsu Changjing Electronics Technology (CJ)Digital Transistors
Parts
80| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5, C7, C8, C9, C11, C12, C16, C17, C21, C22 |
| 9 | 10k | Resistor_SMD:R_0805_2012Metric | R6, R8, R9, R10, R12, R14, R16, R17, R19 |
| 7 | 330R | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R18, R20, R21 |
| 6 | Red | LED_THT:LED_D3.0mm | D1, D2, D5, D6, D9, D11 |
| 5 | LDR | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | R5, R7, R11, R13, R15 |
| 4 | MountingHole_2.2mm_M2_Pad | MountingHole:MountingHole_2.2mm_M2_Pad | M2, M2, M2, M2 |
| 2 | 12VAC | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J1, J2 |
| 2 | 1N5819 | Diode_SMD:D_SMA | D8, D10 |
| 2 | 22pF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19, C20 |
| 2 | 4.7uF/16V | Capacitor_Tantalum_SMD:CP_EIA-3528-21_Kemet-B_HandSolder | C13, C18 |
| 2 | 470uF/25V | Capacitor_SMD:CP_Elec_10x12.5 | C1, C2 |
| 2 | GBU8M | Diode_THT:Diode_Bridge_Vishay_GBU | D3, D4 |
| 2 | Geared Motor | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | M1, M2 |
| 2 | MOTOR | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J3, J5 |
| 1 | 10uF_16V | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C15 |
| 1 | 12MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 12V_IN | TerminalBlock_Phoenix:TerminalBlock_Phoenix_PT-1,5-2-3.5-H_1x02_P3.50mm_Horizontal | J6 |
| 1 | 1N5824 | Diode_SMD:D_SMA | D7 |
| 1 | 220uF_16V | Capacitor_SMD:CP_Elec_6.3x7.7 | C10 |
| 1 | 33uH | Inductor_SMD:L_12x12mm_H6mm | L1 |
| 1 | 470nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14 |
| 1 | 680uF_35V | Capacitor_SMD:CP_Elec_10x12.5 | C6 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U4 |
| 1 | ESP32-WROOM | RF_Module:ESP32-WROOM-32U | U3 |
| 1 | FLASH | Button_Switch_SMD:SW_SPST_CK_KXT3 | SW3 |
| 1 | Green | LED_THT:LED_D3.0mm | D12 |
| 1 | LM2596S-3.3V | Package_TO_SOT_SMD:TO-263-5_TabPin6 | U1 |
| 1 | LOGO | logo:CULogo | |
| 1 | RESET | Button_Switch_SMD:SW_SPST_CK_KXT3 | SW2 |
| 1 | RotaryEncoder | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | SW1 |
| 1 | SIGNAL | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4 |
| 1 | UMH3N | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q1 |
| 1 | USB_C Conn | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J7 |
| 1 | ~ | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
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Questions
How big is the Dual Axis Solar Tracker PCB?
It measures 101.2 × 76.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dual Axis Solar Tracker use?
80 parts, built around the CH340C, ESP32-WROOM-32, AMS1117-3.3 and GBU8M. 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 Dual Axis Solar Tracker KiCad files?
From the jsitech4/Projects repository on GitHub, at the commit this page was made from: the board is ESP32/Dual_Axis_Solar_Tracker/hardware/Dual_Axis_Solar_Tracker.kicad_pcb and its schematic ESP32/Dual_Axis_Solar_Tracker/hardware/Dual_Axis_Solar_Tracker.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dual Axis Solar Tracker design in my own project?
Its repository states no licence, so its author keeps all rights: ask jsitech4 before reusing the design.