a4A9XJ2WT

ESP32 Multifunctional Electronic Load

Overview

The layout of the buttons and power interface has been optimized, and the 4-pin header power interface has been removed for easier wiring.
It can use the entire ESP32S3 series of chips; some require external flash, therefore the GPIO33-37 pins need code modification. See the circuit diagram for details.
The heatsink hole spacing has been adjusted to 75*75.
0402 surface mount components have been changed to 0603 for easier surface mount. The cover
plate hasn't been drawn yet; the PCB from the expert is included.
Note that it's currently a 6-layer board design; prototyping with a 4-layer board will require modification.

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2026-03-26 14:28:07

P89C51RA2-RB2-RC2-RD2xx Chinese Device Manual
P89C51RB2/RC2/RD2 has 16K32K64K parallel programmable non-volatile FLASH program memory, and can realize serial in-system programming and in-application programming of the device. In-system programmin
[My Journey to Electronic Technology]--A journey of a thousand miles begins with a single step
[align=left][font=宋体][size=4] The first time I came into contact with digital and analog electronics was in the course design after finishing the digital and analog electronics course in my sophomore
Recommended books on embedded development (Twenty-six) --- ARM embedded system development: software design and optimization
[size=5]Recommendations for high-quality books on embedded development (Twenty-six) ---[color=rgb(0, 0, 0)][backcolor=rgb(237, 235, 235)][font=微软雅黑][b]ARM Embedded System Development: Software Design
Why are there flip chips in LED chips?
[p=30, null, left][font=宋体][font=Verdana][color=#000000]What is LED flip chip? [/color][/font][/font][/p][p=30, null, left][font=宋体][font=Verdana][color=#000000]In the field of chips, flip chip techno
Some questions about the generation and principle of 0-10V dimming of LED constant current power supply!
0-10V can be generated by the constant current power supply. The default pull-up resistor is 10V when powered on, so the LED brightness is 100%. The voltage can be pulled down by an external adjustabl
8*8 dot matrix learning
8X8LED dot matrix The internal structure and appearance of the dot matrix are as follows. The 8X8 dot matrix consists of 64 light-emitting diodes, and each light-emitting diode is placed at the inters

Datasheet More

Circuits More