Latest board for TPMS or any wifi and/or Bluetooth to canbus board arrived on Monday. Made the first one today and it seems ok so far. Needs testing for canbus side but I’ve tested previous boards with the same design so it should be ok. Have enough processors to make 9 as I think one maybe DoA.   This board while for TPMS has 8 IO pins and power on a set of plugs. The same JST ones link have inside their ecus.  So anyone can customise them and write their own code in arduino or similar. There is a listen only option and the canbus is powered off on boot just to be safe. One option is use the open source project for canbus sniffer over wifi. That way you can install it once and then use it whenever needed without tying up the diag OBDii port.   A couple are being sent off to be Bluetooth to wifi bridges for home assistant. This is for a house but I know people have added a wifi bridge to their car so when it’s in the garage it reports voltages for battery and oil temps in snowy climates. Batteries can include EV charging if it have canbus.   Works on 12 and should also work on 24v as input takes up to 30v and protection kick in just below 32v.   Case is IP67 and antenna and wiring can be sealed up very well. One is a panel mount, the other is a pole (aka roll cage) mount. The board fits in either case. That about 8-10cm long and 5-7cm long with mounting tab. Antenna is just a standard SMA male like a home internet router so you can fit a big or small antenna depending on use case. Stubby ones are about 3cm, home router ones are 15-20cm.   This was the first time trying a stencil for a pcb and it was far quicker. It’s like screen printing but with solder paste. Lay the stencil and wipe the paste over and it coats all the pads for the components. PCBway charges a lot for them but JLCpcb charges for size. I figured out that making the stencil smaller is not only cheaper but if it fits in the regular box doesn’t increase shipping. Small box is around 18x16cm once they add bubble wrap. Making it usd$7 at JLC vs usd$30 for PCBway just for stencil.

Subarus 2025 patent application  japanese https://www.j-platpat.inpit.go.jp/c1801/DE/JP-2025-019542/30/ja English https://www.j-platpat.inpit.go.jp/d0200   is it possible the scoop is purely aero. As in the air goes in the scoop and exits across the whole windscreen? With a smaller slot to the engine bay so it create a vacuum. That would make it a front mount intercooler, low mount turbo and rotated intake manifold. Given the low mount front turbos seen on recent models it is possible.  

Well shift lights just need assembling and will have 3 spare 40 led bars 20mm square by 22cm long I will make another few 16 bar smaller ones 12mm square by 15cm with a hide away box for the brains. I have 2 cases for the old school flashlight ones which I want to experiment with. There is also another dinosaur in bright lime green that could be used. I got 2 initially but they sent pale green knock off one instead of blue.   The Bluetooth TPMS boards should arrive next week so I can make TPMS to can bus for logging. They should support most Bluetooth sensors so you can buy cheap ones and have multiple sets of wheels with sensors. It will log which ones it sees on startup. Since sensors sleep until moving it should only log the current wheels.   The main audio project got a little larger than planned and now does a whole bunch of new things. Also adding language support so far English, but Spanish is a work in progress and Japanese should also be supported. Mostly that around how the say numbers. English has unique up to 20 eg we say eighteen not 10 and 8. Spanish is unique to 30, but has “y” between larger numbers which all needs to be coded.   https://www.jaycar.co.nz/super-large-seven-segment-display/p/ZD1850   While waiting for parts YouTube recommended a few rally videos. One of which had a nice gear indicator mounted to the side of the dash cluster. So 40 hours later a 70mm tall (58mm for actual LEDs) 8 segment display for canbus is almost ready to order parts to see what actually fits. The controller with same wifi setup fits exactly behind the display and has M3 mounts inneach corner.   Just thinking about adding a few solder points for a light sensor for night dimming incase the car doesn’t have canbus. You can make it show 1-10 by setting ecu to sending it a can message or a byte where each of the 8 bits turns on a single led segment. Will add option to read clutch over canbus  to show C when it detects clutch rather than last gear position.    

after looking at aerodynamics videos and Subaru related content the algorithm surfaced this. Its English overdubbed which can be a bit annoying when there are two people talk over each other. https://www.youtube.com/@stion-tube5753/videos    

After a few days thinking about this it could be interesting for reading the tire model and setting the ecu map or mode.   fit semi slicks and have ecu go into track mode with higher boost etc.  combined with outside, tire temp or under car temp sensor you could know where I the tire compound is operating.   or at the least log what tire was on the car when it was started.   the tag is tiny so I suspect you’d need a coil in each wheel well to power them up. Still if you have those IR tire sensor fitted already it could be a simple add on.    since this is close to ID badge cloning there are already a lot of projects and documentation around. Security conference already have a few people with long range badge closers. Car thieves also have a lot of tech for reading key fobs to start cars and that is all the same principles.