ADC input current will be neglible. However, to get the most accurate results from a high impedance source (like a high value voltage divider) you can add a small buffer capacitor (approx 100nF) between the ADC pin and ground. I have a similar problem, but not for ADC. I need to detect the generati...

Hello Community, Does anyone have a working example of how to update the PWM frequency using the new mcpwm driver in IDF v5.0? This was simple in v4.4 using the provided mpcwm_set_frequency() function, however in IDF v5.0, mcpwm_set_frequency was removed. According to the migration documentation fr...

ESP_morris wrote: ↑

Wed Oct 11, 2023 8:10 am

Thanks for reporting. Yes, we will provide an API to change the period dynamically.

Whether API has been added, I found that the programming guide of 5.2.1 still does not mention setting (or adjusting) PWM operating frequency. Also, how to set up two sets of MCPWM in version 5?

我有一个项目，需要利用分压电路测试外部电压变化。为了保护输入引脚不被大于3.3V的电压击穿。在分压电路中，会考虑添加一个嵌位二极管用以保护。

也许上电之前没有很好的审视电路的完整性，上电之后造成3V3与GND短路，再用USB接入测试，3V3引脚只有700mV的电压值。
在排除电路问题之后，我想知道这样造成的短路一般会造成哪个组件损坏，是LDO，还是芯片本身。
我用的开发板是ESP32-PICO-DevKitM-2，请问如何排查哪一部分受损。

分压电路中需添加嵌位二极管，防止大于3.3V电压击穿34引脚。

我想将Arduino-ESP32做成一个组件。依据文档操作 https://espressif-docs.readthedocs-hosted.com/projects/arduino-esp32/en/latest/esp-idf_component.html 但是几次github下载都失败。 发现gitee有个镜像，但是也失败 aaa@DESKTOP-QEOFLMK MINGW64 /d/Esp-Doc/ESP32-Arduino/components $ git clone https://gitee.com/mirrors/arduino-esp32.git arduino Cloni...

我看到数据手册上是50nA，如果截取一个12V的数据，需要用到240M欧的电阻么？

官网买了一个ESP32-PICO-DevKitM-2开发板，之前做测试代码有问题，一直不断重启。 通过手动下载模式更新一个简单的基于Arduino架构代码下载到开发板上。 #include <Arduino.h> void setup() { Serial.begin(115200); } void loop() { Serial.println("This is Test!!"); delay(1500); } 但重启依旧。考虑是不是重新烧录一套AT固件，但发现PICO系列是PICO-D4的。内置Flash RAM，PSRAM和引脚都与V3-02有所不同，犹豫是否可以烧录。请给予帮助。谢谢！

今天用Arduino Nano（CH340）测试，没有问题。
又改接ESP32_DevkitC_V4，成功一次，失败4次，看来是USB连接的问题。

网上找了各版本的CP210X驱动，安装了都不行，FT