Author Archives: Yoshi

Manual Brakes Postmortem

Posted on 02/07/2017 by Yoshi

Warning: This will be heavily biased towards my specific setup. If you have had issues with boosterless brakes, this might work well for you though. My brakes finally feel ok. I just finished a drift event 2 days ago and … Continue reading →

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Yoshi’s Drift Box: Day 7

Posted on 01/26/2017 by Yoshi

It seems like every time I make a post on this project, I do completely different things than I set out to do in the post. I wound up cleaning up some code (but not much). I realized that the … Continue reading →

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E30 Brake System Overview

Posted on 01/23/2017 by Yoshi

While troubleshooting my general brake issues, I found numerous gaps in my own knowledge. So here is my current understanding of the general E30 brake system (within reason). To start, late model E30s (not sure about before) have a 17mm … Continue reading →

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Manual brakes – LS E30 problems

Posted on 01/19/2017 by Yoshi

The LS swapped E30 inherently has to ditch the vacuum assisted brakes. Directly bolting the factory master cylinder to the firewall causes a large increase in pedal effort that isn’t acceptable. For this reason, the brakes cannot be left alone. … Continue reading →

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Yoshi’s Drift Box: Day 6

Posted on 01/19/2017 by Yoshi

A lot has happened in 2 weeks. I found out that the I2C bus is easily susceptible to noise like in an automotive environment so the UART connection made a bit more sense. Even though it can only take in … Continue reading →

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Yoshi’s Drift Box: Day 5

Posted on 01/03/2017 by Yoshi

OK I lied. The urge to work on the expansion of inputs won over and I’ve done a bunch of research into that. The I2C connector the OBD2 plug uses is an expandable bus while the UART plug is only … Continue reading →

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Drift Box

Posted on 12/21/2016 by Yoshi

Drift boxes are units for on track data acquisition. Many aftermarket units are well into the thousand dollar range. I’d like to create a cheap unit for data logging and drift telemetry. Drift Box Day 0: Project overview Drift Box … Continue reading →

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Yoshi’s Drift Box: Day 4

Posted on 12/21/2016 by Yoshi

I finally managed to get the OBD2 protocol working. It was mildly embarrassing but at least it works now. The screen shot below looks like a jumbled mess but that’s ok. To help figure out sizes and place things appropriately … Continue reading →

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Yoshi’s Drift Box: Day 3

Posted on 12/16/2016 by Yoshi

Well at least I’ve made some form of progress. I originally wanted to make the log files queue all data then export gut the gps polling and other parts of the system don’t update in unison so it was simpler … Continue reading →

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Yoshi’s Drift Box: Day 2

Posted on 12/09/2016 by Yoshi

It’s only been a year and two months since my last update. I did get a lot of interest in this project so I figure I’d update. Before I put this away last time, I managed to get all major … Continue reading →

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