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Has anyone done PMBus communication using the STM32 HAL library, with one STM32 as master and another as slave?
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6
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53
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May 30, 2026
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Hey guys, I built a single-port Type-C fast charging module based on the SW3538 chip. The VDD pin works fine after powering on, but plugged-in devices aren't recognized and it won't charge.
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18
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61
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May 12, 2026
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Hey experts, does a common mode choke perform better with more turns?
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5
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54
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May 10, 2026
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LCD1602 I2C module cannot display characters
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23
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85
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April 28, 2026
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Fans, water pumps, etc. not working; don't know where the problem is
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8
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55
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April 25, 2026
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Let's discuss: Are you still choosing STM32 for small batch projects now, or has everyone switched to domestic alternatives?
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5
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81
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April 21, 2026
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DC-DC Buck Circuit SW Node Ringing Too Severe, RC Snubber Circuit Still Can't Suppress It!
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5
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52
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April 21, 2026
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How to convert a triangle wave into a square wave and invert it using a comparator with hysteresis?
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2
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28
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April 21, 2026
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Why does I2C OLDE setting at 3MHz work normally?
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6
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37
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April 14, 2026
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Which MCU is suitable for capacitive proximity sensing?
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4
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39
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April 7, 2026
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Some issues in BUCK-BOOST circuit design
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7
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85
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April 3, 2026
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STC major outage number cannot be used
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3
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28
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March 26, 2026
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Beginner learning to design LDO buck circuit, unsure if the design is correct and reliable, seeking advice from experts
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13
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147
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March 17, 2026
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How to choose the appropriate inductance value?
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4
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49
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March 16, 2026
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Digital Power Supply Project - Questions about PID Code
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2
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33
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March 16, 2026
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Power MOS/IGBT temperature rise limit query: Does Tc=100°C refer to the plastic case temperature or the metal backplate?
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2
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32
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March 12, 2026
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Questions about using the UCC21520 gate driver—STM32G474-based adjustable DCDC power supply (Buck-Boost)
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5
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62
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March 11, 2026
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Encountered a mysterious error while using the stc8a8k64d4 library functions
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4
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32
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March 9, 2026
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Why does flashing AT firmware to ESP8266 show "waiting for power-on"?
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3
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115
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March 9, 2026
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Why are 24-bit audio ADCs cheap and high-sampling-rate, while general-purpose 24-bit ADCs are expensive and low-sampling-rate?
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4
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58
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March 3, 2026
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Questions regarding the use of CH442E/CH443K chips for switching USB 2.0 data signals and SWD signals
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5
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38
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March 3, 2026
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How to package Python programs into binaries on Raspberry Pi 4B?
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5
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35
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January 13, 2026
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求推荐一款谐波失真测试仪，性价比高的，想测试逆变器输出正弦波失真度（THD）
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10
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31
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January 8, 2026
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谐振电容（MKP薄膜电容或者MLCC电容）在大功率LLC电路中可以串联使用嘛?
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4
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75
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December 25, 2025
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PCB中倒F型天线为什么其中一端接地，这样子不会短路吗？
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7
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97
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December 24, 2025
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Why do motor papers mostly use DSP control and not FPGA control? STM32 is also relatively rare.
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5
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66
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December 24, 2025
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What's the Purpose of Designing the Circuit Board Like This?
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9
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106
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December 5, 2025
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Bigwigs, anyone familiar with the cc2500 RF chip? How can it be configured to achieve longer transmission distances?
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4
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41
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November 18, 2025
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LVGL 8.3 – Memory fragmentation when cycling through GIF images.
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5
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56
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November 16, 2025
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INA226 Measurement Offset/Nonlinearity Problems
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5
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70
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November 12, 2025
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