zmatt.net zmatt https://zmatt.net/wiki/Main_Page MediaWiki 1.31.7 first-letter Media Special Talk User User talk Zmatt.net Zmatt.net talk File File talk MediaWiki MediaWiki talk Template Template talk Help Help talk Category Category talk 0 1 42 41 2020-05-26T12:30:48Z Matt 1 wikitext text/x-wiki Welcome to the zmatt.net wiki. This is a space for me to post information about various projects I'm working on, in the hope that this information might be useful to others. It is a continual work in progress so there may be half formed thoughts and broken links. Public edit access is not currently allowed; if you have feedback you can contact me at contact at zmatt dot net. == Car stuff == I've been doing a fair bit of work on my car (a 2003 Toyota RAV4) recently, as it's getting to the age that various issues start manifesting. While my mother would prefer that I buy a new car, I've been learning a lot in the process of maintaining my 'vintage' RAV. Here's some information as I type it up: * [[Toyota U140 transmission]]: some background on how this typical 4-speed automatic transmission works, including how to calculate the gear ratios from 'first principles' * [[Toyota RAV4 2001-2003 harsh transmission shift ECU fix]]: this model has known issues with harsh shifting and clanging when shifting into reverse, which turns out to be a soldering problem with the engine control unit (ECU) * [[Toyota M-OBD protocol and adapters]]: this model is not OBD-II compliant, but it is possible to connect to it with some off-the-shelf adapters that support custom initialisation sequences; I've also built my own DIY adapter with an Arduino * [[Toyota RAV4 alternator repair]]: replacing alternator bearings was one of the first repair jobs I did on this car, and I learnt a lot in the process about engine compartments and cramped spaces * [[Toyota RAV4 A/F sensor and O2 sensor replacement]]: another tale of engine compartments and cramped spaces, as well as a tale of dodgy replacement parts that aren't quite compatible * [[Toyota RAV4 doors lock but do not unlock]]: a strange issue that I had once * [[Adding AUX input and Bluetooth to Toyota RAV4 radio]] == Bicycle stuff == * [[How to remove bicycle pedals the easy way]] == Electronics stuff == * [[Lenovo 45N1079 battery teardown]] * [[LED corn bulbs]] * [[Resistive electromagnet design]] * [[Dell Venue 11 Pro no bootable devices found]] * [https://zmatt.net/dell-venue-11-pro-travel-keyboard-troubleshooting/ Dell Venue 11 Pro mobile keyboard touchpad troubleshooting] == Miscellaneous stuff == * [[Factoring primes using CADO-NFS and msieve]] h60ho63y2z5mv9290i56otjv538qspg