Motherboard
About the Motherboard PCB
Motherboard is an open source ESP8266 PCB design by KhazAkar, published on GitHub under the MIT license. It is a board measuring 127 × 46 mm, with 108 components from 54 distinct parts.
Its main chip is the ESP8266EX, from the ESP8266 family. Other key parts include the TPS62140A, GD25Q32CSIGR, LT3652EDD and RT6150. By type, the board carries 36 resistors, 32 capacitors, 11 diodes, 8 ICs, 8 connectors and 8 inductors.
From the project
[MOVED to GitLab: https://gitlab.com//r3xxar/espws] Weather station firmware for ESP8266 - mirror
Main components on the Motherboard
Motherboard bill of materials (BOM)
108 components, 54 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS62140A | VFQFN-16-1EP_3x3mm | U1 |
| 1 | GD25Q32CSIGR | SOIC-8_W5.3mm | U2 |
| 1 | LT3652EDD | DFN-12-1EP_3x3mm | U3 |
| 1 | ESP8266EX | QFN-32-1EP_5x5mm | U4 |
| 4 | RT6150 | DFN-10-1EP_3x3mm_P0.5mm_EP1.75x2.7mm | U5, U6, U7, U8 |
| 1 | 40MHz±10ppm | Crystal_SMD_2520-4Pin_2.5x2.0mm | Y1 |
| 1 | Solar Panel | TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J1 |
| 1 | 9V 3A | BarrelJack_CUI_PJ-063AH_Horizontal | J2 |
| 1 | ESP8266 UART | PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | WiFi Antenna | SMA_Molex_73251-1153_EdgeMount_Horizontal | J4 |
| 1 | LiFePO4 | TerminalBlock_Phoenix_PT-1,5-2-5.0-H_1x02_P5.00mm_Horizontal | J5 |
| 1 | BME280 | PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Left | J6 |
| 1 | PMS7003 | PinHeader_2x05_P1.27mm_Vertical | J7 |
| 1 | WIND | PinHeader_1x04_P2.54mm_Vertical_SMD_Pin1Left | J8 |
| 1 | Programming mode | PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | JP1 |
| 1 | Reset | PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | JP2 |
| 1 | Charge/Power | PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Left | SW1 |
| 1 | 10k B=3380 | PinHeader_1x02_P1.00mm_Vertical | TH1 |
| 6 | DB2W40300L | D_SOD-123F | D1, D3, D5, D7, D9, D11 |
| 1 | CMDSH2-4L | D_SOD-323_HandSoldering | D2 |
Show 34 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | UPS115UE3 | D_Powermite2_AK | D4, D6, D8, D10 |
| 5 | 2.2uH | L_Wuerth_WE-TPC-3816 | L1, L5, L6, L7, L8 |
| 1 | 4.3nH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L2 |
| 1 | 5.6uH | SRP6540 | L3 |
| 1 | 2.2nH | L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L4 |
| 5 | 22uF | CP_Elec_6.3x5.4 | C1, C21, C24, C29, C32 |
| 4 | 100nF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C2, C3, C6, C11 |
| 2 | 10uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C4, C5 |
| 5 | 22uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C7, C17, C18, C25, C26 |
| 1 | 680pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C8 |
| 5 | 1uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C9, C20, C23, C28, C31 |
| 1 | 22uF | C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C10 |
| 1 | 1uF/50V | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C12 |
| 1 | 2.4pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C13 |
| 1 | 3pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C14 |
| 2 | 10pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C15, C16 |
| 2 | 4.7uF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C19, C27 |
| 2 | 47pF | C_0603_1608Metric_Pad1.05x0.95mm_HandSolder | C22, C30 |
| 6 | 100k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R1, R20, R26, R27, R35, R36 |
| 1 | 1M07 | R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 3 | 180k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R3, R22, R32 |
| 4 | 10k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R4, R11, R28, R29 |
| 6 | 200 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R5, R6, R7, R8, R10, R15 |
| 1 | 12k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R9 |
| 1 | 0.05 | FCSL150R050FER | R12 |
| 1 | 499 | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R13 |
| 1 | 30k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R14 |
| 1 | 223k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R16 |
| 1 | 330k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R17 |
| 3 | 2k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R18, R19, R31 |
| 1 | 37k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R21 |
| 2 | 150k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R23, R33 |
| 3 | 4.7k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R24, R25, R34 |
| 1 | 1k | R_0603_1608Metric_Pad1.05x0.95mm_HandSolder | R30 |
Motherboard design files
The KiCad project lives in the KhazAkar/espws repository on GitHub; these links point at the commit this page was built from.
Motherboard: common questions
What microcontroller does the Motherboard use?
The Motherboard is built around the ESP8266EX, from the ESP8266 family.
How big is the Motherboard PCB?
The Motherboard measures 127 × 46 mm and is 1.6 mm thick.
How many components are on the Motherboard?
108 components, from 54 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 Motherboard design files?
From the KhazAkar/espws repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Motherboard design in my own project?
Yes, under the terms of its MIT license, which KhazAkar chose for the repository.
Can I test firmware for the Motherboard without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.
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