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2024-05

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[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

[ISFP] Adventurer. Introverted Emotional Type with a Sense of Extroversion (MBTI)

The ISFP is a cognitive function of the Fi-Se, so it makes decisions based on its own feelings and values from information obtained through the five senses. Although they tend to conform to their surroundings because they don't want to get into conflict with others because it is troublesome, they have the image of being free-spirited artists and having a seemingly contradictory state of being at their own pace.

2024.05.22 2024.06.08

[MBTI] How would you apply each type in a startup role, if you were the CEO, to your organization?

Although it is a trivial consideration and a delusion, I will list, at my own discretion and prejudice, the type of business and organisational structure that would be likely to be built if each MBTI type were applied in a start-up role and if each type were to become CEO. Business and organisational management: ENTJ / ESTJ / ENFJ.

2024.05.25 2024.06.08

[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

[App] Create a grid post for iOS screenshots with Figma

iPhone screenshots do not require images at all iPhone display sizes; if the app's UI is the same across multiple device sizes and localisations, simply provide screenshots at the highest resolution required.

Development/Design

[ESP32] How to initialize firmware with a hardware trigger.

Describes the procedure for firmware initialisation using hardware triggering with the TTP223 touch sensor on the ESP32, utilising PlatformIO and TFT_eSPI to display status using the display in safe mode and to perform OTA updates.

Development/Design

[Go] Handling Date type values for nullable DB columns

Three methods for golang to handle values of type date for DB columns that allow null. Allow null with a pointer. sql.NullTime requires a conditional branch via the Valid field to determine null. []When using uint8, convert byte slice -> string -> time.Time object.

Development/Design

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