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Showing posts from April, 2016

Racechip tuning box - part 2 - reverse engineering

See my first article for a short review and teardown: http://hackcorrelation.blogspot.de/2016/02/inside-stuff-racechip-car-tuning-thingie.html First off let me start by saying I consider this fair use, as the instructions and website do not explain what the settings do, how the unit actually functions and what effects it can have. The description below refers to a single-channel Diesel engine (single common rail). Settings First off, most of the users will just want the simple explanations, here's a graph that should be in the manual: The chart above shows 4 possible settings and their effects. The first rotary encoder controls how much 'extra power' is requested. See 9E vs. BE vs. 4E The second rotary encoder controls the RPM high range (endpoint). See BE vs B7. The encoders go from 8 (minimum) through 9, A, B, C, ..., F, 0, 1 ... 7 (maximum).

Ricoh GR sensor dust cleanup

I bought a cheaper-than-usual Ricoh / Pentax GR APS-C camera on ebay that had a few minor issues. One of the most visible ones was dust on the sensor, so I will show you two methods that I've used to clean it up - the hard way first , followed by the easy way . First, to get the position of the dust spots a shot was taken with F/16 against a white background. The exposure was manually set to be as high as possible (while still retaining information), pre-focus was set to the closest position (macro). The resulting image was then adjusted in Irfanview (Auto adjust colors) to get the highest contrast. F/16, 1/3s, MF to closest position Preparation You need a very clean room, no dust, have a dust spray available and preferably wear gloves to avoid getting fingerprints. All parts that cannot be cleaned after assembly (LCD cover backside, LCD, sensor) should be placed facing down on some lint-free material. While removing the screws take note of their length, color and

Odys Winpad V10

In search of a cheap and light notebook that I can use it for light tasks - such as Udacity courses and connecting lab equipment - I stumbled upon Odys Winpad V10 on offer at Amazon. While the Lenovo Miix 830 seemed like a good deal at the moment it suffers from poor battery life, limited USB connectivity while charging and lack of keyboard+touchpad. Most Bluetooth keyboard with trackpad on market now have issues and are overpriced, so the Odys seems like a good fit. This is a short review followed by a look inside the 'docking' unit. Initial impressions The unit is very heavy for its size, ~670g for the tablet and ~670g for the keyboard. The keyboard/touchpad base does not contain any other batteries or peripherals. Battery life is pretty good, I got >6h for light work and the battery bar estimated >14h while idle and connected to the HDMI output with the tablet screen off. The built-in touchpad is pretty bad - the bottom touch area is reserved by the left