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electronic circuit

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Development/Design

[ESP32] Understanding the automatic boot loader mechanism and truth table

The automatic bootloader of the ESP32 is a function that enables automatic programme writing when the PC instructs the programmer to write the programme (by pressing the Upload button on PlatformIO) without having to manually press the EN or BOOT (IO0) pins.
2023.08.13 2024.08.02
Development/Designelectronic circuit
Development/Design

[Speaker] I attended the workshop on acrylic speaker amplifiers. I learned a lot.

I decided to start a speaker business for the hearing impaired in January this year, so this workshop came at the right time when I wanted to deepen my understanding around speakers.
2023.01.28 2024.08.01
Development/Designelectronic circuit
application(Flutter)

[ESP32] Implementation of Deep Sleep Mode and Timer Wake-Up Function

Introduction.Developing "Mia," a talking cat-shaped robot that speaks dialects.After releasing the beta version, several...
2024.07.06
Development/Designapplication(Flutter)built-in(C++)electronic circuit
Development/Design

[ESP32] Electronic circuit of the self-made board that can also be driven by LiPo battery

Describes the process of creating a home-made ESP32 board that can support both USB Type-C and LiPo batteries. The charging current is regulated by PROG and the voltage regulator is switched from AMS1117 to ME6211 series; an automatic switching circuit is implemented using PMOSFETs.
2023.12.16 2024.06.19
Development/Designelectronic circuit
Development/Design

[Electronic Circuit] Found defective products after 100 boards were installed and filed a Quality Complaint with JLCPCB.

The order was placed with JLCPCB for 100 boards, but in reality some of the pin headers were slightly out of level, resulting in LCD displays interfering with each other and not fitting together The JLCPCB order history section has a 'Quality Complaint' field where you can enter the nature of the fault and the number of faulty boards. and the number of defective boards.
2024.05.24 2024.06.08
Development/Designelectronic circuit
Development/Design

[JLCPCB] I received a confirmation email after ordering 100 boards. PCB operation is not checked

If there is no problem with the PCB layout, you will not receive an email from JLCPCB, so if you receive an email, it is when there is a problem, such as an incomplete circuit. Also, JLCPCB does not check the functionality of your own PCB, so you need to look at the schematic and PCB yourself to determine if the order is correct.
2024.05.08 2024.06.06
Development/Designelectronic circuit
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