{"id":19217425,"url":"https://github.com/davatorium/um25c-client","last_synced_at":"2025-05-13T00:05:12.229Z","repository":{"id":142065591,"uuid":"177208194","full_name":"davatorium/um25c-client","owner":"davatorium","description":null,"archived":false,"fork":false,"pushed_at":"2019-03-22T20:59:11.000Z","size":163,"stargazers_count":8,"open_issues_count":0,"forks_count":1,"subscribers_count":5,"default_branch":"master","last_synced_at":"2025-05-13T00:05:03.203Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"C","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/davatorium.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"COPYING","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2019-03-22T20:57:02.000Z","updated_at":"2025-05-02T18:30:00.000Z","dependencies_parsed_at":null,"dependency_job_id":"5db81c35-9c67-4f95-bd3f-f7616cff7b43","html_url":"https://github.com/davatorium/um25c-client","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/davatorium%2Fum25c-client","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/davatorium%2Fum25c-client/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/davatorium%2Fum25c-client/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/davatorium%2Fum25c-client/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/davatorium","download_url":"https://codeload.github.com/davatorium/um25c-client/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":253843213,"owners_count":21972873,"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":[],"created_at":"2024-11-09T14:21:58.624Z","updated_at":"2025-05-13T00:05:12.121Z","avatar_url":"https://github.com/davatorium.png","language":"C","funding_links":[],"categories":[],"sub_categories":[],"readme":"# UM25C\n\nThe UM25(C) is an USB Power Meter by RD Tech. It can be found for less then €20 on AliExpress.\n\n![UM25C](images/um25c.jpeg)\n\nThe specifications are:\nUM25C specifications:\n\n* Display\n  * 1.44″ color LCD display\n  * 0-5 brightness setting\n  * Auto screen off time – 0 to 9 minutes\n  * Refresh rate – 2Hz\n* Measurement Range \u0026 Accuracy\n  * Voltage – 4-24.000V ±0.5‰ + 2digits\n  * Current –  0-5.0000A ±1‰ + 4 digits\n  * Capacity – 0-99999mAh\n  * Energy accumulation – 0-99999mWh\n  * Load impedance – 0.8Ω-9999.9Ω\n  * Time range – 0-99h59min59s\n  * Temperature range – -10℃ to 100℃ ±3℃\n* Connectivity – Bluetooth (C model)\n  * USB – 1x USB male port, 1x USB female port, 1x micro USB port, 1x USB 2.0 type C port\n  * Quick charge recognition mode – QC2.0, QC3.0, APPLE 2.4A/2.1A/ 1A/0.5A, Android DCP  for SAMSUNG\n  * Misc – 4 buttons to navigate menus, Bluetooth switch\n* Dimensions – 71.2mmx30.5mmx12.4mm(UM25C)\n  * Weight – 23.74g\n\nIt comes with a android and windows application for logging.\n\nThis tool is can be used to log the following samples:\n\n* Amperage (A)\n* Voltage (V)\n* Wattage (W)\n* Temperature (C).\n* Data group Summed Amp (Ah)\n* Data group Summed Watt (Wh)\n\n(more to be added in future)\n\nIt outputs the samples to standard out.\n\n\nThis tool does not handle the bluetooth connection, use bluetoothct/blueman for this. You connect to the\n`/dev/rfcomm0` device.\n\nYou can also use this with an UM25 via a USB to serial cable.\n\n\nThe logfile can then be parsed f.e. gnuplot:\n\n![Charging Tablet](images/plot.png)\n![Dummy load 0-2.1 A](images/plot2.png)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdavatorium%2Fum25c-client","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fdavatorium%2Fum25c-client","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fdavatorium%2Fum25c-client/lists"}