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Tim McGuffin

@tim.mcguff.in

@NotMedic from that other place. Adversarial Cartographer. DEFCON Staff & CFP Board. MS in DF. Fmr Fire/EMS. Red and Blue. Builder. Tinkerer. Chaotic Good.

300 Followers  |  252 Following  |  11 Posts  |  Joined: 06.07.2023  |  1.7655

Latest posts by tim.mcguff.in on Bluesky

Sitting at a campsite in the middle of nowhere when Benny Bassani’s “Satisfaction” starts playing far off in distance, and I’m suddenly transported back to Capture the Flag at the AP in 2002-2003. Some memories are deeply ingrained.

10.03.2025 14:07 — 👍 6    🔁 0    💬 0    📌 0
Post image

Reminder that every 10 minute job is one broken bolt away from being an all day ordeal. :-/

01.03.2025 16:04 — 👍 2    🔁 1    💬 0    📌 0

Big vs Little Endian?
forum.flipper.net/t/trying-to-...

24.02.2025 21:36 — 👍 1    🔁 0    💬 0    📌 0

and it never leaves you clothes!

24.02.2025 18:15 — 👍 0    🔁 0    💬 1    📌 0
Old gear oil draining from a differential.

Old gear oil draining from a differential.

This is a picture some of y’all can smell.

23.02.2025 20:23 — 👍 5    🔁 0    💬 1    📌 0
Flash GLEDOPTO GL-C-210WL I was recently working on a project that needed an ESP32 powered from a 12 volt source with 4 GPIO PINs, ready-made, and in a case. I started going down the custom built route when I ran across the GL...

i picked up a GLEDOPTO WLED controller because it fit my hardware needs and figured out how to re-flash it with a different firmware. Maybe this will be useful to others who have a similar need.
tim.mcguff.in/posts/2025-0...

20.02.2025 14:18 — 👍 3    🔁 0    💬 0    📌 0

nice hat! ;)

13.02.2025 20:46 — 👍 0    🔁 0    💬 1    📌 0
13.02.2025 19:53 — 👍 6    🔁 0    💬 0    📌 1

I’m slowly working on the inverse kinematics for the legs so the feet move forward and backward instead of in arcing motions to keep forward motion as straight as possible.
Next up is specifying azimuth to move and letting the code handle the rest. It’s “simple” math, but fun and challenging.

11.07.2023 02:28 — 👍 2    🔁 0    💬 1    📌 0

Quads are neat because you have to consider center of gravity when lifting a leg to keep it from falling over, so subtle shifts to the adjacent legs are required. You also have rotation to use that keeps all four feet in the same position and twists the body.

11.07.2023 02:26 — 👍 2    🔁 0    💬 1    📌 0
Bottom side of a SMARS Quad.

Bottom side of a SMARS Quad.

I should probably add some content here. :)
Recently I’ve been working on building an RC quadruped robot. This is v2, with a lot of learnings from v1. Physically it’s a SMARS Quad running an ESP32, PCA9685, and FS-IA6B receiver running Micropython.

11.07.2023 02:24 — 👍 13    🔁 0    💬 1    📌 0

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