Z1TNK7zY

Rockchip RK3328 small board

Overview

The schematic is still based on Xunlong, but one gigabit Ethernet port has been removed and replaced with USB 3.0.
DDR runs without problems
, but there are some issues with burning the R1 system. It can enter the kernel start stage, but fails to boot, reporting a network card
problem:
YT8531 Ethernet is not working;
LPDDR3 1.8V is not connected;
TF card 3.3V is not connected.

PDF_Small board of Rockchip RK3328.zip

Altium_Rockchip RK3328 small board.zip

PADS_Rockchip RK3328 small board.zip

96340

NAE12S20-DC12V-5V-3.3V Verification Board

(Works, but not very well) It uses a NAE12S20DCDC power module, outputting 12V, 5V, 3.3V, and 12Vsb.
I plan to connect an ATX power adapter board later.

The NAE12S20 is a package-in-package (PSiP) DC-DC power module with an input voltage range of 3V~14V, a maximum output current of 20A, and an adjustable output voltage range of 0.6V~5.5V.
Efficiency: 92%, module power: 8W.
On Xianyu (a Chinese online marketplace), the module costs approximately 4 RMB each. A PAC750W server power supply
costs approximately 45 RMB each. This is just a verification board for the NAE12S20 power module; the component specifications are selected according to Huawei's official chip datasheet. In actual use, enhanced heat dissipation and high-current layout are essential. Each chip consumes approximately 1W (12V*0.18A) without load, which is extremely hot! Do not use low-temperature solder (138℃) on the soldering station as it may melt! Do not solder for too long, or the chip base will fall off!
The accuracy of the 5V and 3.3V adapters depends on the accuracy of R3 and R6.

PDF_NAE12S20-DC12V-5V-3.3V Verification Board.zip

Altium_NAE12S20-DC12V-5V-3.3V Verification Board.zip

PADS_NAE12S20-DC12V-5V-3.3V Verification Board.zip

BOM_NAE12S20-DC12V-5V-3.3V Verification Board.xlsx

96341

Bluetooth remote-controlled self-balancing scooter (supports four-wheel Ackerman structure)

[Recorded on a balance bike; I'm not very good at adjusting parameters, so please bear with it.]

35d4f0129b9aa63b9e2f938dec6a2dde.mp4

PDF_Bluetooth Remote Control Balance Car (Supports Four-Wheel Ackerman Structure).zip

Altium Bluetooth Remote Control Balance Car (Supports Four-Wheel Ackerman Structure).zip

PADS Bluetooth Remote Control Balance Car (Supports Four-Wheel Ackerman Structure).zip

BOM_Bluetooth Remote Control Balance Car (Supports Four-Wheel Ackerman Structure).xlsx

96343

electronic

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Update:2026-03-28 06:55:46

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