Author: R. Morgan

Beta Testing: Expectations, Responsibilities, and Lessons in Professional Communication

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There’s nothing inherently improper about offering a resource-limited beta.

The concern arises when participants discover significant restrictions only after investing time in registration, preparation, and evaluation.

A participant who believes they’re volunteering to assist development may reasonably interpret an unexpected purchase prompt differently from someone who knowingly registers for a commercial trial.

That perception can damage trust even when no deception was intended.

The issue was that the expectations created by the invitation didn’t align with the practical conditions of participation.

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Meet PocketFlow Creator: A Visual Designer for PocketFlow LLM Workflows

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Meet PocketFlow Creator: A Visual Designer for PocketFlow LLM Workflows
This entry is part 1 of 1 in the series PocketFlow Creator

If you’ve built anything with PocketFlow, you know its appeal: the whole framework is about 100 lines of Python. A workflow is just a graph of nodes, each with a prep → exec → post lifecycle, connected by actions (the string a node’s post() returns), and sharing data through a plain Python dict called the

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Giving My Longer LK5 Pro Automatic Bed Leveling: Installing a 3D Touch on the MKS Robin E3 V1.1

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October 2026 · 3D Printing · Marlin · STM32 · Hardware Hacking A practical account of installing a BLTouch-compatible probe, debugging a firmware that wouldn’t boot, and finally getting a good first layer across a 300 × 300 mm bed. I bought a 3D Touch-style probe for my Longer LK5 Pro because I wanted something

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All You Ever Needed To Know About UPDI, And Then Some!

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This entry is part 6 of 7 in the series IMPLEMENTING UPDI FROM SCRATCH

Part VI — The Complete Reference Design, Operating Guide, Troubleshooting Manual, and Resources Updated for the finalized NANO UPDI PROGRAMMER Rev. 1.0.0 hardware We began this series with one deceptively simple question: What is UPDI? Six parts later, the answer is considerably richer than: “It is Microchip’s one-wire programming interface.” UPDI is indeed a one-wire

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All You Ever Needed To Know About UPDI, And Then Some!

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This entry is part 4 of 7 in the series IMPLEMENTING UPDI FROM SCRATCH

Part IV — High-Voltage UPDI Activation and Recovery By the end of Part III, our Arduino Nano could do something genuinely useful. It could: That is already a practical programmer. But there remains an awkward problem. What happens if the microcontroller’s UPDI pin is no longer configured as UPDI? Or, on newer devices, what happens

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All You Ever Needed To Know About UPDI, And Then Some!

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This entry is part 3 of 7 in the series IMPLEMENTING UPDI FROM SCRATCH

Part III — Turning the Arduino Nano into a Real UPDI Programmer Updated for the finalized NANO UPDI PROGRAMMER Rev. 1.0.0 hardware Parts I and II got us across the wire. We now understand enough of UPDI to: That is already a useful communications system. But it is not yet a programmer. Programming begins when

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All You Ever Needed To Know About UPDI, And Then Some!

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This entry is part 2 of 7 in the series IMPLEMENTING UPDI FROM SCRATCH

Part II — Building UPDI from Scratch with an Arduino Nano In Part I we took UPDI apart conceptually. We established that UPDI is not merely “serial programming on one wire.” It is a layered system consisting of: Now we are going to begin making it work. Rather than immediately downloading somebody else’s programmer firmware

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All You Ever Needed To Know About UPDI, And Then Some!

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This entry is part 1 of 7 in the series IMPLEMENTING UPDI FROM SCRATCH

Part I — Foundations, Electrical Interface, Protocol, and High-Voltage Activation There was a time when connecting a programmer to an AVR microcontroller could consume a surprisingly large number of pins. Traditional AVR In-System Programming used SPI-like signaling. JTAG used four principal signaling wires plus reset and power references. debugWIRE reduced debugging to essentially one signal,

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Chapter 40 — Shell Job References with %1

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Chapter 40 — Shell Job References with %1
This entry is part 37 of 38 in the series Writing A Linux Style Operating System From Scratch

Before reading the shell examples in this chapter, be explicit about the prompt transition: toyix> is the kernel monitor. ush> is the user shell. So when this chapter shows commands like: those commands must be typed inside the user shell after toyix> run shell. Chapter 39 made /programs/<name> usable as a launch target. That fixed

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Chapter 39 — Path-Based Program Launching with /programs

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Chapter 39 — Path-Based Program Launching with /programs
This entry is part 36 of 38 in the series Writing A Linux Style Operating System From Scratch

Before reading the shell examples in this chapter, be explicit about the prompt transition: toyix> is the kernel monitor. ush> is the user shell. So when this chapter shows commands like: those commands must be typed inside the user shell after toyix> run shell. Two other constraints still apply in this chapter: So cat README

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