pill_serial

Triple USB-to-serial adapter firmware for flashing onto an STM32F103C8T6 "blue pill" minimum development board ⛺

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2Mentions

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138GitHub stars

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What it is

Triple USB-to-serial adapter firmware for flashing onto an STM32F103C8T6 "blue pill" minimum development board ⛺

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

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Also in these discussions

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This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.

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Mentions over time

HN mentions by year2 dated mentions

Observed mentions: 2019-02-20 04:02:15 UTC to 2023-02-04 16:47:50 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

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Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	1	1
2020	2020-01-01 00:00:00 UTC	2021-01-01 00:00:00 UTC	0	0
2021	2021-01-01 00:00:00 UTC	2022-01-01 00:00:00 UTC	0	0
2022	2022-01-01 00:00:00 UTC	2023-01-01 00:00:00 UTC	0	0
2023	2023-01-01 00:00:00 UTC	2024-01-01 00:00:00 UTC	1	1

What Hacker News says

2 sources

tyingq·Feb 4, 2023

Another idea, STM32Fxxx...3 physical USARTS in at least some of them. A project using it: https://github.com/satoshinm/pill_serial Specs for one with 3 usbs: https://www.st.com/en/microcontrollers-microprocessors/stm32...

In ESP32 Buyer’s Guide: Different Chips, Firmware, Sensors

satoshinm·Feb 20, 2019

This is really cool, glad to see someone tackling this problem. I have added several of my abandoned projects, here is a quick summary of them if there is any interest: https://github.com/satoshinm/WebSandboxMC: Bukkit plugin providing a web-based interface with an interactive WebGL 3D preview or glimpse of your server - this bundles the NetCraft frontend in a Minecraft server plugin. There are requests from Spigot users https://github.com/satoshinm/WebSandboxMC/issues/100 to make it active again, which is what inspired me to add it to Code Shelter. https://github.com/satoshinm/NetCraft: Web-based fork of https://github.com/fogleman/Craft . Craft has been featured on Hacker News before, but it is pretty much abandoned, so I forked it into NetCraft, but then in turn ran out of time/interest to update it. The summary still applies: "Voxel

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game for modern web browsers (Chrome, Firefox, Safari) and desktop operating systems (Windows, macOS, Linux). Just a few thousand lines of C using modern OpenGL (shaders)." Heavily inspired by Minecraft, but much smaller and simpler. https://github.com/satoshinm/pill_serial: Triple USB-to-serial adapter firmware for flashing onto an STM32F103C8T6 "blue pill" minimum development board . With this firmware you can make your own USB-to-serial adapter, times three, by flashing a <$2 blue pill board. https://github.com/satoshinm/pill_duck: Scriptable USB HID device for STM32F103 blue pill (inspired by USB Rubber Ducky) . Another project for the "blue pill", this one lets you make an automated USB keyboard/mouse device, an imitation of the popular Rubber Ducky hacker tool, but a lot cheaper. https://github.com/satoshinm/pill_6502: emulated 8-bit 6502 CPU and 6850 ACIA for STM32F103 blue pill . Want to build a retrocomputer but an authentic 65C02 chip is too much? Play around with a classic processor without buying old hardware? Emulate it with the cheap blue pill, with enough support at least to run the Microsoft OSI BASIC ROM. I have started a few more abandoned projects on https://github.com/satoshinm?tab=repositories&type=source but these seem to have generated the most interest (especially the NetCraft/WebSandboxMC combination, but the pill_ projects can be quite handy), no longer can maintain them myself but would be great to see continued maintenance provided a community finds them valuable.

In Code Shelter: A Maintainer Community for Abandoned FOSS Projects