PowMetV2.2
About the PowMetV2.2 PCB
PowMetV2.2 is an open source ESP8266 PCB design by aleksejm, published on GitHub. It is a 2-layer board measuring 95.2 × 67.5 mm, with 155 components from 59 distinct parts.
Its main chip is the ESP-07v2, from the ESP8266 family. Other key parts include the ATmega644-20AU, 24LC02, LT6106, LM4040N-4.1 and FE1.1s. By type, the board carries 49 resistors, 45 capacitors, 14 ICs, 13 connectors, 9 transistors and 8 diodes.
From the project
6 USB port Power Meter
Main components on the PowMetV2.2
PowMetV2.2 bill of materials (BOM)
155 components, 59 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ATmega644-20AU | TQFP-44_10x10mm_Pitch0.8mm | IC1 |
| 1 | 24LC02 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U1 |
| 6 | LT6106 | SOT-23-5 | U2, U3, U4, U5, U6, U7 |
| 1 | LM4040N-4.1 | SOT-23 | U8 |
| 1 | FE1.1s | TSSOP-28_4.4x9.7mm_Pitch0.65mm | U9 |
| 1 | ESP-07v2 | ESP-12E | U10 |
| 1 | LTC4412 | SOT-23-6 | U11 |
| 1 | AP1117E50 | SOT-223-3Lead_TabPin2 | U12 |
| 1 | LM3150 | SSOP-14_5.3x6.2mm_Pitch0.65mm | U13 |
| 1 | IRFR5305PBF | TO-252-2Lead | Q1 |
| 1 | CSD16342Q5A | AB2_SON5x6_FET | Q2 |
| 1 | CSD17577Q5A | AB2_SON5x6_FET | Q3 |
| 6 | IRLML6401 | SOT-23 | Q4, Q5, Q6, Q7, Q8, Q9 |
| 1 | 12Mhz | Crystal_HC49-SD_SMD | Y1 |
| 1 | 20.000 Mhz | Crystal_SMD_2520-4pin_2.5x2.0mm | Y2 |
| 1 | BARREL_JACK | JACK_ALIM | CON2 |
| 6 | USB_A | USB_A_Vertical | P1, P2, P3, P4, P5, P6 |
| 1 | CONN_01X09 | Pin_Header_Straight_1x09_Pitch2.54mm | P7 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03 | P8 |
| 1 | USB_B | USB_B | P10 |
Show 39 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | CONN_02X04 | Socket_Strip_Straight_2x04 | P11, P12 |
| 1 | Burn | Pin_Header_Straight_2x01 | P13 |
| 6 | F_Small | Fuse_SMD1206_HandSoldering | F1, F2, F3, F4, F5, F6 |
| 1 | 500mA | Fuse_SMD1206_HandSoldering | F7 |
| 1 | Reset | SW_SPST_B3U-1000P | SW1 |
| 4 | Led_Small | LED_0805 | LED1, LED2, LED3, LED4 |
| 4 | Power | LED-5MM | D1, D8, D9, D12 |
| 1 | MC Status | LED_0603 | D2 |
| 1 | Led_Small | LED_0805 | D6 |
| 1 | SKL14 | SOD-123 | D10 |
| 1 | SK2030YD2 | DD-PAK_TO263_DualDiode | D11 |
| 1 | 10uH | Inductor_1212 | L1 |
| 1 | 2.2uH | SELF-WE-PD-XXL | L3 |
| 1 | Bead/100MHZ/470ohm/2A | R_0805_HandSoldering | L4 |
| 13 | 100n | C_0805 | C1, C5, C6, C8, C9, C10, C11, C15 +5 |
| 7 | 1n | C_0805 | C2, C3, C4, C7, C12, C13, C14 |
| 8 | 10uF | C_0805 | C18, C19, C20, C21, C22, C23, C28, C35 |
| 3 | 0.1uF | C_0603 | C24, C25, C30 |
| 2 | 18pF | C_0805 | C26, C27 |
| 1 | 10nF | C_0805 | C29 |
| 2 | 22uF | R_1210 | C31, C37 |
| 2 | 18pF | C_0603 | C32, C33 |
| 1 | 15nF | C_0805 | C39 |
| 1 | 470nF | C_0805 | C40 |
| 1 | 1uF | C_0805 | C41 |
| 1 | 470pF | C_0805 | C42 |
| 1 | 220uF | c_elec_6.3x7.7 | C43 |
| 2 | 100uF | C_0805 | C44, C45 |
| 7 | 100R | R_0805 | R1, R9, R10, R16, R17, R19, R43 |
| 6 | 0.02R | R_1206 | R2, R11, R12, R18, R20, R21 |
| 18 | 10K | R_0805 | R3, R4, R6, R7, R8, R13, R14, R15 +10 |
| 1 | 15K | R_0805 | R5 |
| 5 | 470R | R_0805 | R22, R23, R24, R25, R39 |
| 4 | 100K | R_0805 | R28, R34, R44, R45 |
| 1 | 2.7K | R_0805 | R29 |
| 4 | 330 | R_0805 | R30, R31, R32, R38 |
| 1 | 470K | R_0805 | R33 |
| 1 | 1K07 | R_0805 | R35 |
| 1 | 73K2 | R_0805 | R36 |
PowMetV2.2 design files
The KiCad project lives in the aleksejm/6xUSB-Power-Meter repository on GitHub; these links point at the commit this page was built from.
PowMetV2.2: common questions
What microcontroller does the PowMetV2.2 use?
The PowMetV2.2 is built around the ESP-07v2, from the ESP8266 family.
How big is the PowMetV2.2 PCB?
The PowMetV2.2 measures 95.2 × 67.5 mm, has 2 copper layers and is 1 mm thick.
How many components are on the PowMetV2.2?
155 components, from 59 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 PowMetV2.2 design files?
From the aleksejm/6xUSB-Power-Meter repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the PowMetV2.2 design in my own project?
The repository has no license, so all rights stay with aleksejm. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the PowMetV2.2 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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