Fixing Microwave Oven Ring with detached wheel

By davidgo | September 24, 2021 |

I have an older Panasonic Microwave oven (model NN-ST680S).   Other then the light not working (and the replaced light failing after a few days!), the unit has worked well until recently. One of the  roller wheels on the the oven decided to come off recently – and after popping it back, it kept on coming off.   After tossing up whether to get a replacement ring for about 1/10th the cost of replacing the new oven or ditching the oven I came up with a better idea.   My first attempts at fixing the ring failed, but I worked out a simple, elegant and fairly professional looking solution. I simply popped the wheel off the ring, cut a roughly…

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Tasmota and IR Blaster – Neo Coolcam NAS-IR03W

By davidgo | June 20, 2021 |

After my previous debacle getting an IR Blaster to work with Tasmota, I purchased a Neo Coolcam from Aliexpress (https://www.aliexpress.com/item/33040426244.html) – and I’m glad I did.  Other then the firmware version this proved to be really good for hacking. The board is trivial to open (just rotate the top off, like opening a jar).    The board itself is well laid out, with everything on 1 side, and exposed pads grouped together.   I soldered on headers – and indeed these can remain on the board permanently as there is ample space for them.   I used Tasmota to flash. I had no problem getting this to work with Tasmota-IR, following the details at https://templates.blakadder.com/neo_coolcam_NAS-IR03W.html although while my Air conditioning…

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Wifi Smart IR Contoller – S4829 – A look at hardware and Tasmota Flashing

By davidgo | May 30, 2021 | Comments Off on Wifi Smart IR Contoller – S4829 – A look at hardware and Tasmota Flashing

This article is for those with a technical bent looking for information on this product – as I did not find anything meaningful  I leave my observations below. I purchased one of these units off Aliexpress for a pittance – and I did not get a bargain.   While it is possible that this unit worked out-the-box, the design is “not great”. I attempted to use tuya-convert to flash this unit with Tasmota.  That failed and left me with something of a brick.  (ie it corrupted the existing firmware)  I then opened the unit to attach leads and flash Tasmota on it that way.    The connection points are tiny and scattered all over the board – and in…

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Aercus WeatherSleuth Weatherstation / MQTT / Security thoughts

By davidgo | October 23, 2020 |

I recently got my hands on an Aercus Weathersleuth Weatherstation. This is a fairly nice piece of kit. One of its benefits is it can talk to the internet or an arbitrary server. A bit of poking around revealed it communicates by way of an HTTP post request which looks as follows – http://ADDRESS.SPECIFIED.IN.CONFIG/weatherstation/updateweatherstation.php?ID=IDINCONFIG&PASSWORD=PWINCONFIG&tempf=64.8&humidity=79&dewptf=58.1&windchillf=64.8&winddir=48&windspeedmph=2.46&windgustmph=2.46&rainin=0.00&dailyrainin=0.00&weeklyrainin=0.00&monthlyrainin=0.00&yearlyrainin=0.00&solarradiation=152.45&UV=1&indoortempf=-9999&indoorhumidity=-9999&baromin=-9999&lowbatt=0&dateutc=20165-10-0%202:29:46&softwaretype=Weather%20logger%20V2.1.9&action=updateraw&realtime=1&rtfreq=5 On the back of this I wrote a trivial script (which does not yet do authentication) – <?php # Script to take data from Aecus weather station and convert to MQTT # Stations is an array which defines the devices we accept.# Format of each sub-array is “Name”,”Password”,”IP address” ## This script requires php-mqtt – see https://github.com/php-mqtt/client# Acquired with “composer require php-mqtt/client”  …

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TZT AT89C2051 Digital LED Display 4 Bits Electronic Clock Electronic Production Suite DIY Kit 0.56 Inch Red Two Alarm Programming / Instruction

By davidgo | September 4, 2020 |

I purchased a kit-set clock/alarm kit for my kids to build to learn to solder. Unfortunately, while it came with soldering instructions (which it didn’t need), it did not come with programming instructions and the supplier is no more. Below are partial instructions I’ve discovered through the web and playing around. The clock has 2 buttons – S1 and S2. Clicking S2 cycles through different settings A-I. When you click S2 the left digit on the screen represents A,B (8), C, D (0), E,F,G,H and I Clicking S1 then cycles through the options for that setting. The corresponding settings are roughly (and slightly incorrectly still) – A = Clock Hour B = Clock Minute C = Beep…

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Owners Manual for ProRunner 310R Motorized Treadmill

By davidgo | August 11, 2019 |

I purchased said Treadmill from Torpedo 7 a few months ago, and the manual has been sitting around the machine, looking ugly. As its only 16 pages, black and white, I cant be bothered finding a place to keep it. (It would make my library of exercise machinery manuals to large), so I’ve digitized a copy for myself. I have emailed Torpedo 7 confirming I am OK to redistribute this work for free. ( I doubt this is an issue as they have not asserted copyright, so hopefully we are helping each other) The manual number is 4130K3-90004-1400, and can be found here.

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Dissecting a cheap Time Release Lock

By davidgo | June 17, 2019 |

Some months ago I acquired a dead-on-arrival time release lock – the type that typically sells on Aliexpress and eBay for about US$20, appropriately described as “Multipurpose Time Lock” but more commonly “Fetish Electronic Timer” or, in the type of English unique to China “Adult Game Fetish Handcuffs”. Unfortunately there does not seem to be a lot of choice if you want an inexpensive electronically controlled time-release lock. The issue with the unit I got my hands on was clearly a dead battery – as best I can tell the unit contains a small lithium polymer battery which must have been sitting in a state of discharge in a warehouse somewhere causing permanent damage – it no…

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DIY IOT Heated Towel Rail Timer

By davidgo | March 23, 2019 |

In order to save electricity I made a heated towel rail timer, and, because its 2019, made it controllable through a web page available on my home network. This project cost less then half the price of a basic timer. Here is how I did it and how you can leverage my experience and avoid some pitfalls. NOTE THIS PROJECT USES MAINS VOLTAGES, COULD BE DANGEROUS AND MAY NOT BE LEGAL TO IMPLEMENT IN YOUR COUNTRY. Update – 2021/06 – While this project was cool, and it gives me joy every time I use it, I did not know about TASMOTA when I did it.  Were I to try this again, I might  simply flash Tasmota on…

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Free Roundcube Skin

By davidgo | June 12, 2018 |

I am quite used to the “Larry” Roundcube skin, and did not find the default theme to be as comfortable to use – however I have 2 mail boxes which I want to keep separate, but still use with Roundcube.   Looking for alternative themes did not yield an awful lot of options, and the ones which were available were either extremely overpriced or just did not work right. So I went down a small rabbit hole – cloning the “Larry Skin” and then modifying it.   This worked – sort of.   After a frustratingly large amount of time I realised that (a) Larry appears to be special and the plugins have specific support for that skin – which…

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Dell Venue 11 pro (7139) as a Linux Tablet – with full disk encryption !

By davidgo | June 20, 2017 |

I can’t stomach the “telemetry” in Windows 10, and wanted a cheap hybrid laptop / tablet for when I go travelling.  I really love the concept of the Dell Venue 11, and managed to pick up a mint condition second hand i5/250gig/8gig model – replete with keyboard and docking station for NZ$400 including shipping. A couple of years ago I previously struggled to get an i3 model working with Linux touch-screen and WIFI, and I’m quite happy with how far things have come – All the hardware worked out of the box on Ubuntu 16.04.2 (Partly, I suspect, due to the Intel AC WIFI adaptor the unit came with) – unfortunately it did not work well as…

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