Graduation project based on 51 microcontroller electronic scale design materials (schematics, source programs, papers, etc.)

Contains all design information

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CN0237

Ultra-low power, 18-bit, differential PulSAR ADC driver

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CN0227

High performance, 16-bit, 250 MSPS wideband receiver with anti-aliasing filter

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CN0143

Building Single-Ended Differential Converters for Voltage Output and Current Output DACs Using the AD8042 Op Amp

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CN0169

How to use the 16-bit voltage output DAC AD5542A/AD5541A to achieve high-precision level setting

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21-channel 120Msps Raspberry Pi microcontroller logic analyzer

Using Raspberry Pi pico (rp2040) as logic analyzer and oscilloscope with sigrok

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CN0216

Precision electronic scale design using 24-bit Σ-Δ ADC AD7791 and external zero-drift amplifier ADA4528-1

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Quark: ESP32-based electronic measurement and debugging tool

Quark based on ESP32 is an open source electronic tool that integrates electronic measurement probes and debugging tools. It has a wireless connection function and can be connected to APP.

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Source Measure Unit μSMU Open Source Project

μSMUs are not meant to replace precision SMUs, but to complement them in cost-sensitive areas where accuracy is not required.

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CN0153

Build a USB-based temperature monitor using the ADuC7122 precision analog microcontroller and an external thermistor

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DER-879 - 10W isolated flyback power supply, using LinkSwitch-TNZ to generate AC zero-crossing signal and X capacitor discharge losslessly

10 W isolated flyback power supply with lossless generation of AC zero-crossing signal and X capacitor discharge using LinkSwitch-TNZ (LNK3317D)

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CN0156

Amplitude control circuit for AD9834 waveform generator (DDS)

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Application circuit of TLP7920 isolation amplifier (current detection)

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Matrix LED headlights

This reference design provides design guidance, data, and other content for LED matrix headlights. It independently controls the lighting of multiple LEDs according to the situation.

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Based on the portable soldering iron open source system IronOS, download the full set of open source materials for Pinecil V1 (software, hardware, etc.)

The portable soldering iron launched by PINE64 in the early days was based on the GD32 design. This time it was upgraded to the second generation product, which was changed to the domestically produced BL706. Its feature is that it supports low-power Bluetooth. The Bluetooth OTA upgrade function will be added to IronOS later. IronOS supports a variety of portable DC, QC, and PD powered soldering irons, and supports all standard functions of smart soldering irons.

Schematic PCB

CN0187

Crest factor, peak and rms RF power measurement circuit optimized for high speed, low power and single 3.3 V supply

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SEC-6K6W-CLLC-GEVK: CLLC-class reference design kit for 6.6kW OBC

CN0146

Construct a low-cost programmable gain instrumentation amplifier circuit using the four-channel single-pole single-throw switch ADG1611 and the instrumentation amplifier AD620

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Open source LCR table design

This work is written by Jean-Jacques Aubry

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Open source SMU precision power supply equipment

The SMU is a precision power supply device that can measure not only high-resolution voltage sources but also high-resolution current sources. It also integrates bipolar voltage and four-quadrant output functions to facilitate testing of various characteristics. By providing a linear sweep voltage and sweep current, the IV characteristic curve of the instrument can be obtained.

Schematic PCB