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https://github.com/allanccwang/electronic_projects

implement the circuit with microcontroller
https://github.com/allanccwang/electronic_projects

arduino circuit-analysis circuit-simulations circuits-and-electronics cpp data-analysis microcontroller physics python wemos

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implement the circuit with microcontroller

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# About

This repository showcases a series of hands-on electronics experiments and microcontroller-based projects, primarily built around the MCU platform. Each lab explores a unique concept—from analog signal processing and sensor integration to web-controlled interfaces and transistor diagnostics. Designed for clarity, modularity, and reuse, these projects serve as both a personal learning archive and a collaborative resource for makers, educators, and engineers.



Explore the labs below, sorted by progression and topic.



# Project Index (Sorted by LAB Number)

## 🔧 Project Index (Sorted by LAB Number)

- [LAB1_RC_circuit/](LAB1_RC_circuit/)

- [LAB2_Analog_Input_Voltage/](LAB2_Analog_Input_Voltage/)

- [LAB3_binary_display_with_LED/](LAB3_binary_display_with_LED/)

- [LAB4_Photoresistor_switch_circuit/](LAB4_Photoresistor_switch_circuit/)

- [LAB5_Planck_constant_experiment/](LAB5_Planck_constant_experiment/)

- [LAB6_ESP32_Based_Real_Time_Oscilloscope/](LAB6_ESP32_Based_Real_Time_Oscilloscope/)

- [LAB7_ESP32_as_WIFI_Station/](LAB7_ESP32_as_WIFI_Station/)

- [LAB8_R-2R_resistive_ladder/](LAB8_R-2R_resistive_ladder/)

- [LAB9_ESP32_WebServer_control_Two_LEDs/](LAB9_ESP32_WebServer_control_Two_LEDs/)

- [LAB10_ESP32_WebServer_slider_control_LED_PWM/](LAB10_ESP32_WebServer_slider_control_LED_PWM/)

- [LAB11_Read_temperature_with_OLED_display/](LAB11_Read_temperature_with_OLED_display/)

- [LAB12_practice_on_APDS9960_sensor/](LAB12_practice_on_APDS9960_sensor/)

- [LAB13_555Timer_Function_Table_Test/](LAB13_555Timer_Function_Table_Test/)

- [LAB14_Verify_P2N2222A_Amplifier-Transistor_Switching/](LAB14_Verify_P2N2222A_Amplifier-Transistor_Switching/)

- [LAB15_P2N2222A-Amplifier-Transistor_voltage_validation/](LAB15_P2N2222A-Amplifier-Transistor_voltage_validation/)

- [LAB16_NE555P_Astable_Test_validation/](LAB16_NE555P_Astable_Test_validation/)

- [LAB17_APDS-9960_Proximity_Test/](LAB17_APDS-9960_Proximity_Test/)

- [LAB18_Weight_Sensor_HX711_module_Load_Cell_Calibration/](LAB18_Weight_Sensor_HX711_module_Load_Cell_Calibration/)

- [LAB19_Color_Sensor_and_OLED_Display_Integration_Test/](LAB19_Color_Sensor_and_OLED_Display_Integration_Test/)

- [LAB20_Sensor_Fusion_by_using_HX711_and_APDS-9960_Modules/](LAB20_Sensor_Fusion_by_using_HX711_and_APDS-9960_Modules/)

- [LAB21_Smart_Sorting_System_with_HX711_and_APDS-9960_Modules/](LAB21_Smart_Sorting_System_with_HX711_and_APDS-9960_Modules/)

- [LAB22_Simple_Magnetic_Control_Light_using_a_Reed_Switch/](LAB22_Simple_Magnetic_Control_Light_using_a_Reed_Switch/)

- [LAB23_STM32-ESP32_Dual_MCU_Communication_Setup/](LAB23_STM32-ESP32_Dual_MCU_Communication_Setup/)

- [LAB24_STM32F103_DMA_Data_Acquisition_and_Analysis/](LAB24_STM32F103_DMA_Data_Acquisition_and_Analysis/)

- [LAB25_STM32F103_DMA-Based_Analog_Signal_Acquisition_and_UART_Output_Practice/](LAB25_STM32F103_DMA-Based_Analog_Signal_Acquisition_and_UART_Output_Practice/)

- [LAB26_Electronics_Circuit_System_Thinking_Experiment_with_NE555_RC_Oscillator/](LAB26_Electronics_Circuit_System_Thinking_Experiment_with_NE555_RC_Oscillator/)

- [LAB27_Angle-Pressure_Chain_Reaction_for_Monitoring_Tilting_Structure/](LAB27_Angle-Pressure_Chain_Reaction_for_Monitoring_Tilting_Structure/)

- [LAB28_Quantum-Scale_Stochastic_Resonance-QSR_Simulator/](LAB28_Quantum-Scale_Stochastic_Resonance-QSR_Simulator/)

- [LAB29_Analog_Quantum_Dispersive_Readout_Simulator/](LAB29_Analog_Quantum_Dispersive_Readout_Simulator/)

- [LAB30_Blochsphere-on-Hand_A_Sensor-Based_Interactive_Holographic_Projection/](LAB30_Blochsphere-on-Hand_A_Sensor-Based_Interactive_Holographic_Projection/)

- [LAB31_Overshoot_and_Ringing_Detector_with_STM32_as_Oscilloscope/](LAB31_Overshoot_and_Ringing_Detector_with_STM32_as_Oscilloscope/)

- [LAB32_ESP32+STM32_RLC_Qubit_Analog_Lab/](LAB32_ESP32+STM32_RLC_Qubit_Analog_Lab/)

- [LAB33_A_Number_Guessing_Hangman_Game_with_ESP32_keypad_and_LED/](LAB33_A_Number_Guessing_Hangman_Game_with_ESP32_keypad_and_LED/)

- [LAB34_Quantum_Readout_Fidelity_with_Analogy_Experiment/](LAB34_Quantum_Readout_Fidelity_with_Analogy_Experiment/)

- [LAB35_Action_Recognizer_Based_on_Edge_Impulse_with_ESP32_and_MPU6050/](LAB35_Action_Recognizer_Based_on_Edge_Impulse_with_ESP32_and_MPU6050/)

- [LAB36_Smart-Load_Adaptive_Regulator-An_Edge-Impulse-Based_Load_Adaptive_Calibration_System/](LAB36_Smart-Load_Adaptive_Regulator-An_Edge-Impulse-Based_Load_Adaptive_Calibration_System/)



# Microcontroller, ESP32

CG



# specs

* Processors:

  * CPU: Xtensa dual-core (or single-core) 32-bit LX6 microprocessor, operating at 160 or 240 MHz and performing at up to 600 DMIPS

  * Ultra low power (ULP) co-processor

* Memory: 520 KiB SRAM

* Wireless connectivity:

  * Wi-Fi: 802.11 b/g/n

  * Bluetooth: v4.2 BR/EDR and BLE (shares the radio with Wi-Fi)

* Peripheral interfaces:

  * 12-bit SAR ADC up to 18 channels

  * 2 × 8-bit DACs

  * 10 × touch sensors (capacitive sensing GPIOs)

  * 4 × SPI

  * 2 × I²S interfaces

  * 2 × I²C interfaces

  * 3 × UART

  * SD/SDIO/CE-ATA/MMC/eMMC host controller

  * SDIO/SPI slave controller

  * Ethernet MAC interface with dedicated DMA and IEEE 1588 Precision Time Protocol support

  * CAN bus 2.0

  * Infrared remote controller (TX/RX, up to 8 channels)

  * Motor PWM

  * LED PWM (up to 16 channels)

  * Hall effect sensor

  * Ultra low power analog pre-amplifier

* Security:

  * IEEE 802.11 standard security features all supported, including WFA, WPA/WPA2 and WAPI

  * Secure boot

  * Flash encryption

  * 1024-bit OTP, up to 768-bit for customers

  * Cryptographic hardware acceleration: AES, SHA-2, RSA, elliptic curve cryptography (ECC), random number generator (RNG)

* Power management:

  * Internal low-dropout regulator

  * Individual power domain for RTC

  * 5μA deep sleep current

  * Wake up from GPIO interrupt, timer, ADC measurements, capacitive touch sensor interrupt

* Battery management

  * Connector for 3.7v battery (like 18650).



# Microcontroller, STM32F103C8

STM32F103C8_pinout_IMG



# specs

* ARM®32-bit Cortex®-M3 CPU Core

  * 72 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory access

  * Single-cycle multiplication and hardware division

* Memories

  * 64 or 128 Kbytes of Flash memory

  * 20 Kbytes of SRAM

* Clock, reset and supply management

  * 2.0 to 3.6 V application supply and I/Os

  * POR, PDR, and programmable voltage detector (PVD)

  * 4-to-16 MHz crystal oscillator

  * Internal 8 MHz factory-trimmed RC

  * Internal 40 kHz RC

  * PLL for CPU clock

  * 32 kHz oscillator for RTC with calibration

* Low-power

  * Sleep, Stop and Standby modes

  * VBAT supply for RTC and backup registers

* 2 x 12-bit, 1 μs A/D converters (up to 16 channels)

  * Conversion range: 0 to 3.6 V

  * Dual-sample and hold capability

  * Temperature sensor

* DMA

  * 7-channel DMA controller

  * Peripherals supported: timers, ADC, SPIs, I2Cs and USARTs

* Up to 80 fast I/O ports

  * 26/37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant

* Debug mode

  * Serial wire debug (SWD) & JTAG interfaces

* 7 timers

  * Three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input

  * 16-bit, motor control PWM timer with dead-time generation and emergency stop

  * 2 watchdog timers (Independent and Window)

  * SysTick timer 24-bit down-counter

* Up to 9 communication interfaces

* Up to 2 x I2C interfaces (SMBus/PMBus)

* Up to 3 USARTs (ISO 7816 interface, LIN, IrDA capability, modem control)

* Up to 2 SPIs (18 Mbit/s)

* CAN interface (2.0B Active)

* USB 2.0 full-speed interface

* CRC calculation unit, 96-bit unique ID