MPPT-Controller
About the MPPT-Controller PCB
MPPT-Controller is an open source ESP32 PCB design by akbar-q, published on GitHub. It is a 4-layer board measuring 99 × 99 mm, with 96 components from 52 distinct parts.
Its main chip is the ESP32-WROOM-32D, from the ESP32 family. Other key parts include the LM317_SOT-223, LM337_SOT223, LM1117DT-3.3, LM2596S-ADJ and TC4422. By type, the board carries 33 resistors, 17 capacitors, 11 connectors, 10 diodes, 7 ICs and 2 fuses.
It belongs with the power & battery, audio and iot & wireless designs in this gallery.
From the project
This repository showcases a curated selection of my original electronics hardware designs. These projects span power electronics, RF systems, digital logic, and embedded hardware, each built with an emphasis on practical validation, clean design, and production-readiness.
This repository showcases a curated selection of my original electronics hardware designs. These projects span power electronics, RF systems, digital logic, and embedded hardware, each built with an emphasis on practical validation, clean design, and production-readiness.
With over three years of hands-on experience, I specialize in taking ideas from concept to lab-verified prototypes. My approach blends solid engineering principles with detailed testing and manufacturing-aware design. I work across the full lifecycle—from schematic capture and BOM optimization to PCB layout, fabrication…
Main components on the MPPT-Controller
MPPT-Controller bill of materials (BOM)
96 components, 52 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM317_SOT-223 ADS1115IDGS | TSSOP-10_3x3mm_P0.5mm | U1 |
| 1 | ESP32-WROOM-32D | ESP32-WROOM-32D | U2 |
| 1 | LM337_SOT223 CH340C | SOIC-16_3.9x9.9mm_P1.27mm | U3 |
| 1 | LM1117DT-3.3 | TO-252-3_TabPin2 | U4 |
| 1 | LM2596S-ADJ | TO-263-5_TabPin3 | U5 |
| 1 | TC4422 | DIP-8_W7.62mm | U6 |
| 1 | ADS1115IDGS | TSSOP-10_3x3mm_P0.5mm | U7 |
| 1 | Fan_4pin | FanPinHeader_1x04_P2.54mm_Vertical | M1 |
| 1 | IRL540N | TO-220-3_Vertical | Q1 |
| 6 | Conn_01x02_Pin | TerminalBlock_Altech_AK300-2_P5.00mm | J1, J2, J3, J4, J6, J10 |
| 1 | USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_GCT_USB4085 | J5 |
| 3 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J7, J8, J9 |
| 1 | Conn_01x02_Pin | PinSocket_2x01_P2.54mm_Vertical | J11 |
| 2 | SW_Push | SW_Push_1P1T_XKB_TS-1187A | BOOT1, RESET1 |
| 2 | Fuse | Fuseholder_Clip-5x20mm_Bel_FC-203-22_Lateral_P17.80x5.00mm_D1.17mm_Horizontal | F1, F2 |
| 1 | Conn_01x06_Pin | PinHeader_2x03_P2.54mm_Vertical | FLASH1 |
| 1 | Heatsink_Pad_2Pin | Heatsink_Stonecold_HS-132_32x14mm_2xFixation1.5mm | HS2 |
| 1 | Jumper_2_Bridged | TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | JP1 |
| 4 | 0.1R | R_4020_10251Metric | LR1, LR2, LR3, LR4 |
| 1 | SW_SPDT | PinHeader_1x03_P2.54mm_Vertical | SW1 |
Show 32 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | NTC | R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | TH1, TH2 |
| 5 | LED | LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D2, D3, D4, D5 |
| 1 | 1N4007 | D_DO-41_SOD81_P10.16mm_Horizontal | D6 |
| 1 | Diode | D_MELF | D7 |
| 2 | SS34 | D_SMA | D8, D9 |
| 1 | SK1010 | D_SMC | D10 |
| 1 | 220u | L_10.4x10.4_H4.8 | L1 |
| 1 | 100uH | L_Toroid_Vertical_L25.4mm_W14.7mm_P12.20mm_Vishay_TJ5_BigPads | L2 |
| 6 | 2.2U 0.1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C6, C9 |
| 2 | 100N 0.1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5, C10 |
| 2 | 2.2U C | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C7, C8 |
| 2 | 0.1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C11, C12 |
| 1 | 10n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 1 | 1u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14 |
| 1 | 330u | CP_Elec_10x10.5 | C15 |
| 2 | 470u | C_Radial_D16.0mm_H25.0mm_P7.50mm | C16, C17 |
| 1 | 680R 1k | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1 |
| 6 | 680R 50R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R4, R5, R7, R8 |
| 2 | 680R 200k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R14 |
| 2 | 680R R | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | R9, R10 |
| 2 | 680R 1k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12 |
| 2 | 680R 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R15 |
| 3 | 680R 220R | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16, R17, R18 |
| 2 | 220R | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19, R20 |
| 1 | 3.3k | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R21 |
| 1 | R | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R22 |
| 1 | 10R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R23 |
| 1 | 10kR | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R24 |
| 1 | 10R | R_Axial_Power_L25.0mm_W6.4mm_P27.94mm | R25 |
| 4 | 10k | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R26, R27, R28, R29 |
| 2 | 4.7k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R30, R31 |
| 2 | 50R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R32, R33 |
MPPT-Controller design files
The KiCad project lives in the akbar-q/Circuits-PCB-HardwareDesign repository on GitHub; these links point at the commit this page was built from.
MPPT-Controller: common questions
What microcontroller does the MPPT-Controller use?
The MPPT-Controller is built around the ESP32-WROOM-32D, from the ESP32 family.
How big is the MPPT-Controller PCB?
The MPPT-Controller measures 99 × 99 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the MPPT-Controller?
96 components, from 52 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 MPPT-Controller design files?
From the akbar-q/Circuits-PCB-HardwareDesign 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 MPPT-Controller design in my own project?
The repository has no license, so all rights stay with akbar-q. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MPPT-Controller without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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