{"id":11251,"date":"2026-02-22T16:39:45","date_gmt":"2026-02-22T16:39:45","guid":{"rendered":"https:\/\/purplemeanie.co.uk\/?p=11251"},"modified":"2026-02-22T16:39:45","modified_gmt":"2026-02-22T16:39:45","slug":"project-seven-update-feb26-short","status":"publish","type":"post","link":"https:\/\/purplemeanie.co.uk\/index.php\/2026\/02\/22\/project-seven-update-feb26-short\/","title":{"rendered":"Project sEVen Update Feb26 Short"},"content":{"rendered":"\n<p>Brusa BDC668 traction DC2DC converter working on the bench.<\/p>\n\n\n\n<p>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 conversion of 40V up to 260V in a test. Eventually this device will take the approximately 250V from my battery pack and generate the 800V needed by the inverter and motor. <\/p>\n\n\n\n<p>What I\u2019ve therefore got working so far is the: ZombieVerter VCU, Aim Technologies PDM32, contactor junction box and the Brusa DCDC converter. Outside of this test I also have the Battery Management System (BMS) running. <\/p>\n\n\n\n<p>Next up will be to get the Brusa DCDC converter running at its full output voltage and then to start working to get the inverter and motor working. #evconversion #caterhamseven #puttingtheevins<\/p>\n\n\n\n<p>Here&#8217;s a link to the video&#8230;<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-9-16 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Project sEVen Update Feb26: Brusa BDC668 traction DC2DC converter working on the bench\" width=\"422\" height=\"750\" src=\"https:\/\/www.youtube.com\/embed\/zsJids2bsFE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\">Project sEVen Feb26 Update Short<\/figcaption><\/figure>\n\n\n\n<p>There will be a longer video about all of this coming out later this week.<\/p>\n\n\n\n<p>John<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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 conversion of 40V [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11252,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"YouTube Short: Brusa BDC668 traction DC2DC converter working on the bench","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[51,38,26],"tags":[],"class_list":["post-11251","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-caterham-blog","category-electric-vehicles","category-youtube"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-22-at-12.52.51.jpeg","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8yl38-2Vt","jetpack-related-posts":[{"id":11273,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2026\/04\/24\/project-seven-pt9-traction-dc2dc-converter-bring-up\/","url_meta":{"origin":11251,"position":0},"title":"Project sEVen Pt9: Traction DC2DC converter Bring Up","author":"John Martin","date":"April 24, 2026","format":false,"excerpt":"Project sEVen update covering traction DC-DC converter bring-up, high-voltage testing, low-voltage integration, CAN bus work, and the Caterham EV testbench.","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/04\/Project-sEVen-pt9-001_2-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":11194,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2026\/02\/16\/gvret-and-bdc668-disectors-for-wireshark\/","url_meta":{"origin":11251,"position":1},"title":"GVRET and BDC668 Dissectors for Wireshark","author":"John Martin","date":"February 16, 2026","format":false,"excerpt":"Technical notes on GVRET and BDC668 Wireshark dissectors, using CAN bus tooling to inspect and understand Project sEVen diagnostic and power-electronics data.","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/Screenshot-2026-02-15-at-16.56.02-scaled.png?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":11168,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2026\/02\/15\/esp32ret-on-an-adafruit-esp32-s3-tft\/","url_meta":{"origin":11251,"position":2},"title":"ESP32RET on an Adafruit ESP32-S3 TFT","author":"John Martin","date":"February 15, 2026","format":false,"excerpt":"Well, this was another one of those rabbit hole projects. I'd got myself a home grown CANbus sniffer that talked in the Lawicel format to SavvyCan and allowed me to sniff CANbus data reasonably reliably.\u00a0 BUT, I had to be connected to the sniffer over a serial interface and that\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2026\/02\/ES32RET-on-S3-TFT-scaled.jpeg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":11015,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2025\/11\/23\/putting-the-ev-in-seven-two-year-mega-update-video\/","url_meta":{"origin":11251,"position":3},"title":"Putting the EV in Seven &#8211; Two Year Mega Update Video","author":"John Martin","date":"November 23, 2025","format":false,"excerpt":"Two-year Project sEVen update covering EV packaging, high-voltage and low-voltage systems, battery and motor-controller work, gearbox decisions, 3D scanning, and overall project progress.","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2025\/11\/PTEVIS6-2-Year-002b-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":8125,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2022\/09\/30\/seven-index\/","url_meta":{"origin":11251,"position":4},"title":"Putting the EV in sEVen &#8211; Index","author":"John Martin","date":"September 30, 2022","format":false,"excerpt":"Project sEVen is the electric conversion thread for the Caterham, covering mechanical packaging, EV power electronics, CAN bus diagnostics, 3D scanning, CAD references, and systems integration.","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2022\/09\/Cartoon-Seven-Vector-with-EV-Purple-Bumper.png?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":8262,"url":"https:\/\/purplemeanie.co.uk\/index.php\/2023\/03\/21\/putting-the-ev-in-seven-lowflying-part-3-ev-bits-and-pieces\/","url_meta":{"origin":11251,"position":5},"title":"Putting the EV in sEVen &#8211; Lowflying part 3 : EV Bits and Pieces","author":"John Martin","date":"March 21, 2023","format":false,"excerpt":"This article first appeared in the February edition of the Caterham and Lotus Seven Club's Lowflying magazine. I also created an animated overview of all of this in this video below: https:\/\/youtu.be\/8tDo6ezOMu0 What's in an EV Conversion A more detailed version of this video will be coming soon. And here's\u2026","rel":"","context":"In &quot;Caterham Blog&quot;","block_context":{"text":"Caterham Blog","link":"https:\/\/purplemeanie.co.uk\/index.php\/category\/caterham-blog\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/purplemeanie.co.uk\/wp-content\/uploads\/2023\/03\/Test-Cycles-250W-with-Lineart-Exp-0.25-Gamma-1.4.png?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/11251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=11251"}],"version-history":[{"count":2,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/11251\/revisions"}],"predecessor-version":[{"id":11254,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/posts\/11251\/revisions\/11254"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media\/11252"}],"wp:attachment":[{"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=11251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/categories?post=11251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/purplemeanie.co.uk\/index.php\/wp-json\/wp\/v2\/tags?post=11251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}