Thomas makes, writes

openHASP touch display build

openHASP running in a 3D printed case

openHASP running in a 3D printed case

I discovered HASP - open hardware edition while I was searching for projects integrating touch interfaces with Home Assistant.

With this opensource firmware, you can easily and cheaply make a network connected touch control panel to control devices or show values.

When I bumped into a nice 2.8" TFT Desktop stand enclosure on thingiverse, I remembered I had an unused 2.8" ILI9341 display with resistive touch layer from a previous project.

Connecting the dots... I had all the necessary parts in my workshop, this would make a nice project to make over a weekend evening.

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Openscad: Interlocking Hash shaped platform

concept

While designing a screw-drive based RC tank (perhaps more on that later), I wanted to create a large easily customisable support structure out of a minimal amount of plastic. I started prototyping an interlocking structure in the shape of a hash (#). This turned out to be a lot of ugly code, and so I got sucked into an advanced-openscad black-hole and found a cleaner solution.

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Reviving my Standing stats project

concept

I've been using an Ergotron standing desk for 6+ years now. Several years ago I started building a sensor device to track how much time I spend standing up versus sitting down in my chair. The hardware prototype finished, it got shelved since I found other fun things to do with my limited hobby-time.

Recently I noticed that I sit down 99% of the time when working from home. To revive my healthy habit of working upright part of the time, I decided to pick up my parked project by re-printing the enclosure I made on my own printer and leveraging the power of esphome on a ESP8266 and home assistant to make the hardware useful.

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Din-rail mounted Home assistant gear

din rail mounted stuff

I have a technical wall with several pieces of electronics mounted onto it. It started to look a bit disorganized, with all these things mounted at random places on the wooden board and cables running all over the place.

So I wanted to clean it up a bit... I stubled upon a dinrail mount on thingiverse, and remembered I had a piece of DIN rail in a box. Time to remix a bit and mount everything on DIN rail!

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Board stacks

raspberry pi stack prototype

At home and at work, I always tend to have around 5 small development boards on my desk. In a fixed setup with identical boards, metal or plastic standoffs can be a nice solution to build a stack that reduces the footprint on desk, and avoid a spiderweb of cables.

In reality, the boards are of different sizes, and standoffs still cost a few euro's each. I knew I could do better, using a 3d printer and some parametric CAD modeling.

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TV Console corner protector

from the side

During COVID19 lockdown, the kids were running around the living room a lot more, and a lot more reckless. Our TV console is covered with glass plates. These have chamfered corners (45 degree cut off), but still it's a hard, glass corner, and I could imagine painful or catastrophic injuries and trips to the ER.

I decided to create a quick and dirty cover that, once installed, would provide safer plastic, rounded corners.

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DIY extension block

from the side

During COVID19 lockdown, I found myself struggling with cheap extension blocks, in fact I find most extension blocks horrible, and most power supply blocks can't fit next to each other.

I still had three brand new, wall sockets left over from electricity renovations (I opted to place earth wire so installed appropriate sockets). These are Niko brand, the finest EU/BE sockets available, and are lovely to use in every way possible. I already considered making larger extension blocks this way.

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