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Brian McKenna

@puffnfresh.mastodon.social.ap.brid.gy

Functional programming, electric vehicles, renewable energy, Tasmania 🌉 bridged from ⁂ mastodon.social/@puffnfresh, follow @ap.brid.gy to interact

Posts Replies Media

Brian McKenna @puffnfresh.mastodon.social.ap.brid.gy · 12m

Me: the car isn't charging because there's a bug in the charger Wife: oh, what kind of bug? Me: uhhhh looks kinda like a wasp? Wife: that's not what I thought you meant

Pins of an EV charger with a squashed insect around one.

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Brian McKenna @puffnfresh.mastodon.social.ap.brid.gy · 02/10/2026

I've used #Meshtastic for years but now there's #MeshCore repeaters all around #Tasmania. I've just added a Wio Tracker L1 to our railway vehicle. Reports the GPS position of the vehicle via MeshCore telemetry back to our headquarters. Not sure if we'll need […] [Original post on mastodon.social]

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Brian McKenna @puffnfresh.mastodon.social.ap.brid.gy · 05/06/2026

I've been working on continually exporting #Haskell's stack traces to pprof format, making GHC compatible with existing tools, e.g. Pyroscope, Speedscope, etc. Simple tests give it about a 2% overhead on a silly Scotty/HTTP example app. That brings it in […] [Original post on mastodon.social]

Haskell call graphs in Grafana Pyroscope.

Haskell call stack visualised with "go tool pprof"

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Brian McKenna @puffnfresh.mastodon.social.ap.brid.gy · 24/05/2026

Electric railway vehicle schematic. Some more details: * Hyundai Kona EV battery modules * QS165 motor (used in electric motorbikes, e.g. modded Surrons) * FarDriver ND72450 controller (also used for motorbikes) * 14 tooth 428 motor sprocket to 60 tooth axle […] [Original post on mastodon.social]

Schematic of an electric railway vehicle

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Brian McKenna @puffnfresh.mastodon.social.ap.brid.gy · 23/05/2026

Yesterday was the public launch of the Launceston & North East Railway's "railbug" rides. We were fully booked out and had a very successful day. I spoke on ABC Northern Tasmania's breakfast program and had the front page photo for the local newspaper […] [Original post on mastodon.social]

Electric railway vehicle pushing a pedal vehicle up a track, through the Tasmanian bush.

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