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Serial port and power supply board for FriendlyARM ZeroPi

Overview

ZeroPi is another completely open-source handheld maker tool launched by the Friendly Electronics team for makers, embedded enthusiasts, electronic artists, and hobbyists. It features an Allwinner H3 quad-core processor, 512MB of RAM, a memory card slot, and a 4-pin debug serial port. The only drawback is that it uses MicroUSB for power, so a small board was designed to power the development board via a Type-C interface through the 4-pin debug serial port. The onboard serial port can be directly used for
pre-built verification. The mounting copper pillars are M2*11+4.

PDF_Serial Port and Power Supply Board for FriendlyARM ZeroPi.zip

Altium serial port and power supply board for FriendlyARM ZeroPi.zip

PADS_Serial Port and Power Supply Board for FriendlyARM ZeroPi.zip

BOM_Serial Port and Power Supply Board for FriendlyARM ZeroPi.xlsx

94844

USON8_4x4mm to 8px2.54PH

USON8 4x4mm to 8p 2.54ph adapter for USON8 programming.

The dedicated jig for the USON8 is very expensive, so I made this EEPROM burning tool for miniaturized devices. Although it's still a bit troublesome, it's at least a feasible solution besides methods like wire bonding.

PDF_USON8_4x4mm to 8px2.54PH.zip

Altium_USON8_4x4mm to 8px2.54PH.zip

PADS_USON8_4x4mm to 8px2.54PH.zip

BOM_USON8_4x4mm to 8px2.54PH.xlsx

94845

ESC (not verified)

ESC module, used in conjunction with a fan.

This PCB is for testing purposes only, exploring the feasibility of 3D printing a fan (fan printout address: fan). The PCB design was inspired by a Bilibili video ([FPV Drone] DIY BLHeli_S ESC, Homemade Drone ESC, Recording the Process from Schematic to Firmware Download). The board has been successfully manufactured and soldered. However, it has yet to pass the firmware test. Therefore, this project is currently only for demonstration and exchange. An improved version is expected to be released around summer vacation. At that time, the ESC will be smaller and more perfect. Below are pictures of the actual product.

PDF_Electronic Speed Controller (Unverified).zip

Altium_eScreenEsc (Unverified).zip

PADS_Electronic Speed Controller (Unverified).zip

94846

ESC and PWM output controller

PWM output controller

This project was also intended as a module for fans, but it was eventually cancelled due to time constraints. Like the previous ESC, this module failed verification due to repeated rewriting. It was based on the work of this open-source author (a brushless ESC PWM signal generator), with some size reductions and the addition of an indicator light. Below are some physical demonstration images.

This component is only for demonstration and discussion; future improvements may be made, or it might be integrated with an ESC.

PDF_Electronic Control Screw (ESC), PWM Output Controller.zip

Altium_Electronic Speed Controller (ESC) and PWM Output Controller.zip

PADS_Electronic Speed Controller (ESC) and PWM Output Controller.zip

94847

electronic

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.

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Update:2026-03-26 12:17:38

1602 cannot be displayed (contrast is normal)
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Note: Don't use the on-chip AD. The boss asked me to use an external AD7680 for sampling. I'm a novice and don't know how to start. Please help me!
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