Last of 2019
In fact only post of 2019
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Category Archives: Uncategorized
Matplotlib font cache
Fixing the matplotlib font cache go into python import matplotlib.font_manager as jt jt._rebuild() font cache seems to be ~/.cache/matplotlib/fontList.json
Posted in matplotlib, pandas, python, Uncategorized
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Logitech C270 and Linux hangups
Problems on a debian install that each time I plugged in a C270 the usb hung. A look at logs showed two symptoms. lots of usb 3-6: 3:1: cannot get freq at ep 0x86 and multiple instances of udevd also … Continue reading
Kinetis K64 Not Starting after Power Up
A day of misery with various micro-controllers. More to be explained over the coming days, tales of misery and imagination involving LPCExpresso and Kinetis Studio…. But for not the misery was a Kinetis K64F that seemed to not boot reliably. … Continue reading
LED Pattern designer
For a schools demo project I wanted an easy way for students to design a sequence of control values for the LEDS on an mbed 1768 board. Download from here The mbed code is at https://developer.mbed.org/users/jont/code/nine_ledpatterns/
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Droid Backups
Handy reminders of where things are on Android and how to backup the whole thing Custom Sounds http://www.androidcentral.com/adding-your-own-custom-sounds-android Backup the whole thing http://droidviews.com/2012/how-to-backup-your-android-phone-without-rooting-or-unlocking-the-bootloader/
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PH_Lyrics Android Widget
As mentioned previously I have been using a database of Peter Hammill and Van Der Graaf Generator songlines as test data for various projects. Whilst doing some Android related things I put together a “widget”. So as an extension to … Continue reading
Posted in android, computing, music, Uncategorized
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Android CPU Simulator
The microprocessor simulator that was featured last year has now been implemented as an Android application. It is intended to be run on 7 Inch tablet devices and above. Here is a picture of it running on a 7 inch … Continue reading
Matplotlib, BaseMap, Pyinstaller
(brief random notes, that may help someone else) A brief tale of getting a matplotlib and basemap to work with pyinstaller. There are two strands to this the Linux and Windows. This is mostly the linux story. Step by step, … Continue reading
Posted in computing, matplotlib, python, Uncategorized
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RPi, AutoLogin, Auto start an application, Disable Screen blanking.
These notes are for use when it is required that a device automatically starts, runs an x-session and then runs a particular task. For example an information display. In those situations it may also be required that the screen does … Continue reading
Posted in linux, Raspberry Pi, Uncategorized
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