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Testing of Chinese power bank IC designed for using with 1S battery and with supporting many fast charging protocols. But everything is not so perfect, let's take a closer look.

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Analyzing of total PCB price with components and assembly

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Searching for existing commercial transparent (DIY) power banks,

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Small useful tip how using custom rule can improve PCB layout process.

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Summary

  • ๐Ÿ’ป MCU: Cortex-M4 STM32F401
  • ๐Ÿ–ฅ Display: IPS 160ร—80 px (ST7735)
  • โšกOutput voltage (MAX): 150V+
  • ๐ŸŽ† Output current (MAX): 150mA+
  • ๐Ÿ”ฝ Control: Mechanical Buttons
  • ๐Ÿ”‹ Powering: 1S1P 3.7V 18650 Li-Ion Battery
  • ๐Ÿ”Š Notification:ย  Sound (Buzzer)
  • โžก Charging: USB Type-C
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Let's see how real automotive Tesla board using low-votlage shutdown (lockout) DC-DC mechanism is used to protect cells against undervoltage.

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Measuring of the quiescent and standby battery current when inverter enabled and disabled by button.

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Big teardown of modern high-quality solar hybrid inverter. Mechanical parts.

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Big teardown of modern high-quality solar hybrid inverter, you need to see it ๐Ÿ˜Ž.

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Let's check which exact voltage could be produced by the small solar panel 6V. This information is important for further energy transformation for device powering and battery charging.

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KKR75 ๐Ÿ“˜ How to download step 3D model from EasyEDA/LCSC/JLCPCB?

THANK YOU. This has saved me from pulling my hair.
2 months ago

admin admin ๐Ÿ›  TEARDOWN: Brushless Motor Controller 48V of the Chinese Electrical Bike (Ebike)

No, I don't know. BTW, this controller from Crosser CR2 ebike.
2 months ago

Dmytro ๐Ÿ›  TEARDOWN: Brushless Motor Controller 48V of the Chinese Electrical Bike (Ebike)

Hi. Do you, by any chance, know what communication protocol this...
2 months ago

Dmytro ๐Ÿ›  TEARDOWN: Brushless Motor Controller 48V of the Chinese Electrical Bike (Ebike)

Yes, NFC is integrated into display, and it wouldn't be that much...
2 months ago

admin admin ๐Ÿ’ป HS402 3.0 ANDROID STM32 Oscilloscope PCB and assembling

They have active TG group: https://t.me/hscope/1 1) Check voltages...
2 months ago

admin admin ๐Ÿ›  TEARDOWN: Brushless Motor Controller 48V of the Chinese Electrical Bike (Ebike)

Hi. If NFC integrated into display I don't think so. If NFC...
2 months ago

Damir ๐Ÿ’ป HS402 3.0 ANDROID STM32 Oscilloscope PCB and assembling

When I turn it on, I don't get a line, but rather a noise with an...
2 months ago

Dmytro ๐Ÿ›  TEARDOWN: Brushless Motor Controller 48V of the Chinese Electrical Bike (Ebike)

Hi. Is there a way to bypass display of the scooter with this type...
2 months ago
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