2 layers92.7 × 65.4 mm
Lightweatherv3
dominicmason555/lightweatherv3
Open-Source Hardware and Firmware IO and Temperature/Pressure/Humidity/Gas Sensor MQTT Board
201 parts2CERN-OHL-S-2.0
2 layers68.6 × 48.6 mm
Stm32 esp iot
Kikkiu17/espiot2A small board built to measure current and voltage of any appliance.
- Size
- 68.6 × 48.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 55
- Nets
- 42
- Pads
- 163
- Tracks, vias
- 407, 100
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 23 Apr 2024
- Updated
- 1 Mar 2026
Overview
Stm32 esp iot is an open-source printed circuit board by Kikkiu17, from the Kikkiu17/espiot repository on GitHub. It is a 2-layer board of 68.6 × 48.6 mm with 55 parts on 42 nets, routed with 407 tracks and 100 vias.
It is built around the HLK-5M05, LM358 and AMS1117-3.3, with the AO3416 among its other parts. Its parts include 18 resistors, 13 connectors, 11 capacitors, 5 ICs and 4 transistors. It belongs with the home automation and IoT boards and the ESP8266 and STM32 boards of this library.
Main components
4
HLK-5M05
DIP,38x23mm0.1W 18mm 1A 23mm 38mm 3kV 50mVp-p 5V 5W 70% 70V~350V 85VAC~264VAC AC/DC-DC Short Circuit Protection、Over Current Protection ±0.2% DIP,38x23mm AC-DC Power Modules ROHSHI-LINKAC-DC Power Modules
LM358
SOP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 24mA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOP-8 Operational Amplifier ROHSMSKSEMIOperational Amplifier
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
AO3416
SOT-23-55℃~+150℃ 1 N-channel 1.1V 1.4W 1.65nF 10nC@4.5V 20V 22mΩ@4.5V 6.5A 87pF SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdespiot
A small board built to measure current and voltage of an appliance.
This board was used as a testbed for STM32 ADC oversampler, UART and DMA.
To measure current and voltage values, a 12-bit ADC was used, with an oversampling ratio of 256x and an 8-bit shift to obtain efficient data averaging - this provides stable readings, along with a sampling time of 3.5 cycles for current and 79.5 cycles for voltage. DMA was also used to transfer all the ADC readings into memory without performance losses.
Parts
55| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C6, C7, C8, C10 |
| 5 | 1K | Resistor_SMD:R_0603_1608Metric | R5, R6, R7, R16, R17 |
| 4 | 4K7 | Resistor_SMD:R_0603_1608Metric | R1, R2, R10, R11 |
| 4 | AO3416 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 3 | 10K | Resistor_SMD:R_0603_1608Metric | R3, R12, R13 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3, C4 |
| 2 | 470R | Resistor_SMD:R_0603_1608Metric | R14, R15 |
| 1 | 0R | Resistor_SMD:R_1206_3216Metric | R18 |
| 1 | 1nF | Capacitor_SMD:C_0603_1608Metric | C5 |
| 1 | 1µF | Capacitor_SMD:C_0603_1608Metric | C11 |
| 1 | 220µF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C9 |
| 1 | 250K | Resistor_SMD:R_1206_3216Metric | R8 |
| 1 | 27K | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 3V3 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J10 |
| 1 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | 500R | Resistor_SMD:R_0603_1608Metric | R9 |
| 1 | 5V | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J13 |
| 1 | ACS712xLCTR-20A | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | AC_IN | w_conn_screw:mors_2p | J8 |
| 1 | AC_OUT | w_conn_screw:mors_2p | J11 |
| 1 | ADC | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | ESP8266-01_ESP-01 | power_symbols:esp-01s | U4 |
| 1 | HLK-5M05 | Converter_ACDC:Converter_ACDC_HiLink_HLK-5Mxx | PS1 |
| 1 | I2C1 | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | I2C2 | Connector_JST:JST_EH_B4B-EH-A_1x04_P2.50mm_Vertical | J12 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D1 |
| 1 | LED_IO | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J9 |
| 1 | LM358 | Package_DIP:DIP-8_W7.62mm | U5 |
| 1 | PWR_SWD | Connector_JST:JST_EH_B5B-EH-A_1x05_P2.50mm_Vertical | J2 |
| 1 | STM32G030F6Px | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U1 |
| 1 | SW1 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | SW2 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | SW3 | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | WKUP | Connector_JST:JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J6 |
| 1 | ~ | power_symbols:ZMPT107 | T1 |
Questions
How big is the Stm32 esp iot PCB?
It measures 68.6 × 48.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Stm32 esp iot use?
55 parts, built around the HLK-5M05, LM358, AMS1117-3.3 and AO3416. 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 Stm32 esp iot KiCad files?
From the Kikkiu17/espiot repository on GitHub, at the commit this page was made from: the board is pcb/kicad7_stm32_esp_iot/stm32_esp_iot.kicad_pcb and its schematic pcb/kicad7_stm32_esp_iot/peripherals.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Stm32 esp iot design in my own project?
Its repository states no licence, so its author keeps all rights: ask Kikkiu17 before reusing the design.
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