Tri-voltage USB to TTL | CH343P

PDF_Tri-voltage USB to TTL_ CH343P.zip

Altium_Tri-voltage USB to TTL_ CH343P.zip

PADS_Tri-voltage USB to TTL_ CH343P.zip

BOM_Tri-voltage USB to TTL_ CH343P.xlsx

95847

OPA4377 Quad Op-Amplifier Module

A four-channel operational amplifier module using OPA4377.

Function Introduction: This module uses the OPA4377 quad-channel operational amplifier chip, with an adjustable amplification range of 1-101x. The module has a built-in rectifier circuit and outputs a DC voltage signal. The output voltage can be detected using the MCU's ADC function to determine the distance change between the electromagnetic tracking sensor and the track's electromagnetic signal line.
Performance Overview: 1. Rail-to-rail operational amplifier; 2. 4-channel operational amplifier; 3. Power supply voltage: 2.5V-5.5V; (It is strongly recommended that the operational amplifier power supply voltage be consistent with the MCU power supply voltage); 4. Bandwidth: 14MHz; 5. Slew rate: 10V/µs; 6. Noise level: 5.5nV/Hz at 10kHz;

PDF_OPA4377 Quad Op-Amp Module.zip

Altium_OPA4377 Quad Op-Amplifier Module.zip

PADS_OPA4377 Quad Op-Amp Module.zip

BOM_OPA4377 Quad Op-Amp Module.xlsx

95848

18650 power bank IP5407 modified with Type-C

The 18650 power bank I bought online does indeed have a discharge protection mechanism and insufficient current supply, so I redesigned a PCB to replace the motherboard.

I. Team Introduction
(Amateur)
II. Project Requirements
: 1A charging/discharging current, battery discharge protection
 
III. Design Summary
: Design PCB according to the original PCB dimensions, soldering replacement
IV. Project Analysis:
None
V. Overall Design Block Diagram
: IP5407 + IP3005A
VI. Hardware Circuit Composition:
None VII
. Program Flowchart:
None
VIII. Physical Demonstration
 
 
IX. Precautions
: Notes on precautions to be taken during the project's creation (optional)
X. Demonstration Video
: Upload the demonstration video as an attachment. Attachments can only be 50MB in size. Files larger than 50MB can be uploaded to other cloud storage or video websites; simply include the link here.
XI. Attachment Content
: Entries participating in the event must upload all relevant program attachments to an open-source platform or personal code storage cloud. Attachments can be uploaded up to 50MB (do not upload to the LCSC workspace, as there are limitations). Attachments should be named as follows: Attachment 1: XXXX Attachment 2: XXXX
 

Gerber_Charging Module_2024-03-03.zip

PDF_18650 Portable Power Bank IP5407 Modified Type-C.zip

Altium_18650 portable power bank IP5407 modified with Type-C.zip

PADS_18650 portable power bank IP5407 modified with Type-C.zip

BOM_18650 portable power bank IP5407 modified with Type-C.xlsx

95849

NewSwinSID Lite

Imperfect replacement of MOS6581/8580 “SID” chips.

This solution replaces the discontinued MOS 6581/8580 Sound Interface Device (SID) chip. The SID chip was used in Commodore 64 series computers for sound synthesis. Having been discontinued for many years, this solution is an imperfect replacement for the SID chip. Based on the SwingSID project, it is a surface-mount replica of the Micro SwingSID and can be directly flashed with Swing88 or Micro SwingSID firmware. [https://web.archive.org/web/20220418225647/http://www.swinkels.tvtom.pl/swinsid/](https://web.archive.org/web/20220418225647/http://www.swinkels.tvtom.pl/swinsid/)

PDF_NewSwinSID Lite.zip

Altium_NewSwinSID Lite.zip

PADS_NewSwinSID Lite.zip

BOM_NewSwinSID Lite.xlsx

95850

electronic