4 layers30 × 50 mm
PowerMeterLC
dianventer/OpenAmpMeter
A Low Cost ESP32 C3 based current meter. Hardware is availble in two versions. Firmware currently in progress. Webapp and server code to come soon
31 parts
4 layers30 × 45 mm
PowerMeter
dianventer/OpenAmpMeterA Low Cost ESP32 C3 based current meter. Hardware is availble in two versions. Firmware currently in progress. Webapp and server code to come soon
- Size
- 30 × 45 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 43
- Nets
- 49
- Pads
- 164
- Tracks, vias
- 236, 122
- Pours
- 129
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 28 May 2023
- Updated
- 11 Feb 2024
Overview
PowerMeter is an open-source printed circuit board by dianventer, from the dianventer/OpenAmpMeter repository on GitHub. It is a 4-layer board of 30 × 45 mm with 43 parts on 49 nets, routed with 236 tracks and 122 vias.
It is built around the ESP32-C3 and AMS1117-3.3. Its parts include 19 capacitors, 11 resistors, 3 ICs, 3 switches and 2 connectors. It belongs with the sensors and measurement boards and the ESP32 and RISC-V boards of this library.
Main components
2
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (MCU/MPU/SOC)
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
README
README.mdOpenAmpMeter
Parts
43| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF 25V | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C8, C10, C11, C13, C16, C17, C18 |
| 5 | 10uF | Capacitor_SMD:C_0603_1608Metric | C9, C12, C14, C15, C19 |
| 5 | 5K1 | Resistor_SMD:R_0603_1608Metric | R2, R3, R4, R5, R6 |
| 3 | 100 | Resistor_SMD:R_0603_1608Metric | R7, R8, R9 |
| 3 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2, SW3 |
| 2 | 10pF | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 2 | 1K | Resistor_SMD:R_0603_1608Metric | R10, R11 |
| 2 | 2.2nH | Inductor_SMD:L_0603_1608Metric | L1, L2 |
| 2 | 3.3pF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 1 | 22R | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Antenna_Dipole | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | AudioJack4 | Connector_Audio:Jack_3.5mm_PJ320D_Horizontal | J3 |
| 1 | Crystal_GND24 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | ESP32-C3 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U1 |
| 1 | LED_GBAR | LED_SMD:LED_RGB_1210 | D2 |
| 1 | TPD4EUSB30 | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U3 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_Palconn_UTC16-G | J2 |
Questions
How big is the PowerMeter PCB?
It measures 30 × 45 mm and has 4 copper layers, 1.6 mm thick.
What parts does the PowerMeter use?
43 parts, built around the ESP32-C3 and AMS1117-3.3. 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 PowerMeter KiCad files?
From the dianventer/OpenAmpMeter repository on GitHub, at the commit this page was made from: the board is Hardware/PowerMeter/PowerMeter.kicad_pcb and its schematic Hardware/PowerMeter/PowerMeter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PowerMeter design in my own project?
Its repository states no licence, so its author keeps all rights: ask dianventer before reusing the design.
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