Adventures of a Tech, avonturen van een techneut

DuoTank version of new TiMO tank monitor unit, approx 53x32x12 mm total size. The new version is the same size as a 9 Volt battery. As you can clearly see this latest one matches the DuoTank logo. (contact Duotank for purchase / implementation details) Screenshot of #ABI dashboard Timo Tank monitor, showing levels declining, speed and date. 2 early TiMO units on table, this version used a separate light source. Previous versions were reliable but fairly large. This one is still in operation. TiMO unit on tank, still operational on location. This is an early model. TiMO dashboard as used by customer, showing locations and online status/levels of all tanks. This data is pushed to brewery ERP system to automatically optimize route planning of tanker vehicles. Currently installed in 23 location in the Netherlands with 100% uptime. Find more content using hashtag : #oetelx

Good day to you all. I have just released this project I did in a day in 2016 under MIT license. It was a project to help someone quickly get a water dispensing system up and running for "Het Concertgebouw" a famous building in the Netherlands. The project was for a foundation "Join the Pipe" that tries to bring fresh drinking water to everyone in the world (Which is generally a positive thing). The code was written in plain C (using Clion IDE for typing the code) on a linux system for an AVR ATMEGA 328P which is inside the Controllino Mini. Hope you learn something from it. Link to Github project : https://github.com/edwin-oetelaar/join_the_pipe It all worked and was delivered in a few days. Some pictures tell more (maybe) Find more content with hashtag : #oetelx

Conditions are good today. I have my little transmitter with about 0.1 Watt of RF power (could be less). I get my data across the globe : look here 40m band, from Netherlands to Antarctica, USA, Australia and more. This is fun. I am using a QRP labs kit : https://qrp-labs.com/ultimate3.html My antenna is a piece of wire of about 10 meters hanging out of the window not a real antenna! So much fun with so little RF power! Best regards PA2LVD

Maxtor Shared Storage NAS 300 GB Summary of long adventure: TL;DR. ONE DISK IS NOT AN OPTION FOR A NAS - Audience : advanced users - linux skill required : yes - strong opinion : yes - frustration : yes It looks so nice in the picture : storing data on a NAS, not on the local system. You can access it from anywhere in the network, all is fine. Until.. The NAS breaks down and you forgot the backups.. I had this NAS for a long time (several years), somewhere safe in the house, in a dry and protected and cool place, nobody would be able to find it, a digital safe, connected to my local network. It seems a smart idea, but it really was not. Here is my summary of trouble to get my data back. 1) The NAS did not appear in my network anymore 2) Checked power supply, switches, cables 3) conclusion, NAS is bad 4) reboot, does not come online again 5) open it up, take out harddisk, how hard can it be? Right? I connected the disk to my machine with one of those PATA/...

Everywhere I look on the Ali and Ebays I see these step down converters based on MP1584. I bought a couple and actually they are not bad at all. The output voltage is set by the trimming-resistor in the left top corner of the picture. This works OK, but.. it is dangerous because it is rather sensitive to the touch. I decided that I wanted fixed output, so I had to figure out how this thing worked. The datasheet looks like this : R1 in the datasheet is what I call "R feedback" in my image. The value of R2 is mostly 8.2K Ohm in the boards I have seen.  So to set some common values for output voltage: change R1 to 27K for 3V3 output (actually 3.4 volt, but 27K is a standard value) or change R1 to 43K0 for 5.0 Volt output. (43 K is a standard value) A standard 0805 size resistor fits precisely, how convenient ;-). Make sure the other resistor is really 8.2K because that determines the feedback ratio. This way you can not burn up your circ...