Welcome to the Purplemeanie blog of our Caterham journey. We hope you enjoy our trials and tribulations during and after the build. Please leave us a comment and tell us what you think.
Where to Start
The latest project from the Purplemeanie HQ is to have a go at converting a Seven to be an electric vehicle (EV). Follow the project here.
For my most popular video take a look at “Build a Caterham 420R in 30 minutes“
For more reading…
- If you want join us on the journey from the beginning then take a look at this post: Build Blog Index
- If you’d like to see a bit about us then please take a look at our About page.
- If you just want to skip to the latest news then take a look at the Blog.
- We’ve also put a Gallery together if that’s your thing.
- If videos are your thing then take a look at what we’ve posted to YouTube: YouTube Videos
- If my ramblings aren’t enough for you then you can find a whole different bunch of other blogs in this post here.
- … and some might like to jump to my tools and trinkets here.
Latest Posts
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Electric Fun in the Sun
Post Views: 1 A quickie for this one. A local Club member popped over to the local meet for the first time a couple of months ago (even though he’d been an owner for 30 years) and as we got talking he explained about his electric karts… and offered for me to have a play…
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Rewriting My EV’s Vehicle Control Software with an Agentic Workflow
I rewrote my Caterham Seven EV’s vehicle-control software from a clean sheet using ChatGPT Codex. Here’s what the system now does, how my supervised agentic workflow operates, and why AI-generated code still requires architecture, testing, independent review and real bench evidence.
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Project sEVen pt 10: Project Update and Software re-write with AI
A detailed July update on the Purple Meanie Caterham Seven EV conversion, including the rebuilt VCU software, ESP32 web interface, updated bench hardware and live precharge demonstration.
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Spectrogram: An Agentic Coding Side Quest Into Final Cut Pro Audio Analysis
Post Views: 137 If you already live and breathe audio analysis, feel free to skip this bit and go straight to the tale of plugin architecture, notarization and mild host-induced despair. A spectrogram is a way of visualising sound over time. Instead of just showing amplitude, like a waveform does, it shows: So rather than…
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Project sEVen Pt9: Traction DC2DC converter Bring Up
Project sEVen update covering traction DC-DC converter bring-up, high-voltage testing, low-voltage integration, CAN bus work, and the Caterham EV testbench.
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project sEVen Jan26 Update Short
Post Views: 85 Quick update video. Just getting the test bench set up. Lots is going to change in the next few weeks.
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Project sEVen Update Feb26 Short
Post Views: 92 Brusa BDC668 traction DC2DC converter working on the bench. A quick update on progress with my Project sEVen test bench. As I build up the system to eventually get my motor spinning on the bench, today I get as far as running up the Brusa BDC668 to do a DC to DC…
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GVRET and BDC668 Dissectors for Wireshark
Technical notes on GVRET and BDC668 Wireshark dissectors, using CAN bus tooling to inspect and understand Project sEVen diagnostic and power-electronics data.