{"id":13647855,"url":"https://github.com/jiegec/HT42B534USB2UART","last_synced_at":"2025-04-22T06:32:10.207Z","repository":{"id":68569956,"uuid":"324906672","full_name":"jiegec/HT42B534USB2UART","owner":"jiegec","description":"A simple USB to UART board designed with KiCad.","archived":false,"fork":false,"pushed_at":"2023-05-04T06:29:06.000Z","size":336,"stargazers_count":15,"open_issues_count":0,"forks_count":2,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-04-01T15:42:29.457Z","etag":null,"topics":["kicad","open-source-hardware","usb-uart"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/jiegec.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null}},"created_at":"2020-12-28T03:54:43.000Z","updated_at":"2024-12-29T02:14:35.000Z","dependencies_parsed_at":"2023-08-28T00:30:19.288Z","dependency_job_id":null,"html_url":"https://github.com/jiegec/HT42B534USB2UART","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jiegec%2FHT42B534USB2UART","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jiegec%2FHT42B534USB2UART/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jiegec%2FHT42B534USB2UART/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/jiegec%2FHT42B534USB2UART/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/jiegec","download_url":"https://codeload.github.com/jiegec/HT42B534USB2UART/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":250183329,"owners_count":21388697,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["kicad","open-source-hardware","usb-uart"],"created_at":"2024-08-02T01:03:48.280Z","updated_at":"2025-04-22T06:32:09.897Z","avatar_url":"https://github.com/jiegec.png","language":null,"funding_links":[],"categories":["Others"],"sub_categories":[],"readme":"# HT42B534 USB 2 UART Board\n\nA simple USB to UART board. Designed with KiCad. Manufactured and tested.\n\n![Front](Front.png)\n![Back](Back.png)\n\n## How to use\n\n1. Plug USB to your PC\n2. Wire VIO to either V33O(3.3V) or VDD(5V)\n3. Connect TX, RX \u0026 GND (optionally VIO) to other devices\n\nThe voltage of RX/TX should match VIO.\n\n## Bill of Materials\n\n```csv\nReference, Value, Footprint, Datasheet, Product\n\"U1\",\"HT42B534_8SOP\",\"Package_SO:SOP-8_3.9x4.9mm_P1.27mm\",\"https://www.holtek.com/documents/10179/116711/HT42B534-xv110.pdf\",\"https://item.szlcsc.com/504007.html\"\n\"C1\",\"0.1uF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"J1\",\"USB_A\",\"Connector_USB:USB_A_CNCTech_1001-011-01101_Horizontal\",\"~\",\"https://item.szlcsc.com/98530.html\"\n\"R2\",\"33\",\"Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder\",\"~\"\n\"R1\",\"33\",\"Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder\",\"~\"\n\"C6\",\"47pF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"C7\",\"47pF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"C3\",\"1uF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"C2\",\"0.1uF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"C4\",\"10uF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"C5\",\"0.1uF\",\"Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder\",\"~\"\n\"R3\",\"330\",\"Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder\",\"~\"\n\"D1\",\"LED\",\"Diode_SMD:D_0603_1608Metric_Pad1.05x0.95mm_HandSolder\",\"~\"\n\"J3\",\"Conn_01x03\",\"Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical\",\"~\"\n\"J2\",\"Conn_01x04\",\"Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Horizontal\",\"~\"\n```\n\n## USB Device Info\n\n`lsusb` output:\n\n```shell\n$ lsusb\nBus 000 Device 001: ID 04d9:b534 Holtek Semiconductor, Inc. USB TO UART BRIDGE  Serial: 0000\n```\n\nSystem Information:\n\n```\nUSB TO UART BRIDGE:\n\n  Product ID:\t0xb534\n  Vendor ID:\t0x04d9  (Holtek Semiconductor, Inc.)\n  Version:\t2.10\n  Serial Number:\t0000\n  Speed:\tUp to 12 Mb/s\n  Manufacturer:\tHOLTEK\n  Location ID:\t0x00142000 / 12\n  Current Available (mA):\t500\n  Current Required (mA):\t100\n  Extra Operating Current (mA):\t0\n```\n\n## License\n\nCopyright 2020-2021 Jiajie Chen\n\nSPDX-License-Identifier: Apache-2.0 WITH SHL-2.1\n\nLicensed under the Solderpad Hardware License v 2.1 (the “License”); you may not use this file except in compliance with the License, or, at your option, the Apache License version 2.0. You may obtain a copy of the License at\n\nhttps://solderpad.org/licenses/SHL-2.1/\n\nUnless required by applicable law or agreed to in writing, any work distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjiegec%2FHT42B534USB2UART","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjiegec%2FHT42B534USB2UART","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjiegec%2FHT42B534USB2UART/lists"}