Category: Tinkering and electronics
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Sonoff, meet powerstrip
I recently became super fascinated with ESP8266 hardware, and it wasn’t long before I also found out about and ordered a couple of ESP8266-based Sonoff AC switches to play with (immediately flashing them with some generic MQTT firmware). They work wonderfully and are just too cheap to resist. It also wasn’t very long until I began…
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Closed terrarium from IKEA Sinnerlig and Ledberg
In a previous post I examined a Ledberg LED lamp. I actually bought the lamp, along with a ‘Sinnerlig’ glass jar, to make this little tabletop terrarium:
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Reverse-engineering the IKEA “Ledberg” LED
This is an “Ledberg” LED downlight from IKEA: I really like it – the LED is a nice, warm white, it has a very high output (up to 3W) and the diffuser lens makes a nice soft spot. It’s low-profile, easy to mount, doesn’t require heatsinking, and is a complete solution including a 24VDC power…
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Raspberry Pi internet streaming radio station
My partner has been overseas for a few months and was desperately missing a local radio station. It doesn’t have an online stream that she can listen to and so she asked me whether I could record the station for ten hours – this just sounded like a hassle, so I set up an internet streaming…
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Modbus TCP Temperature Sensor with Arduino and LM335
I used to hate on Arduino a bit, but have recently come around. I was having a conversation with a work colleague along the lines of how super easy it would be nowadays to build a temperature sensor with ethernet connectivity and a modbus interface. Remembering that I had an old Arduino board (with Ethernet)…
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Terrariums are fun
I’ve been playing with terrariums. I made a lot, to try out different ideas. One was made with a LED in the bottom of the lid providing illumination. A few months on and a friend is looking after it for me. The plants (well – the weed) has gone crazy and a little mushy has…
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Pulse Metering using ADAM-6051 units
We (at work) needed a quick and cheap solution for remotely collecting data (in pulses per 100L) from some gas volume meters so I built these two boxes. An Advantech ADAM-6051 unit in each box each reads and counts the pulses from two meters, and then the pulse count values (there are two pulse count channels per…
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ISP congestion monitoring with Raspberry Pi
The ISP I use at home is suffering from pretty bad congestion and the service has become barely usable during peak times. Despite multiple reports from other customers, they won’t admit that there is a problem, so it’s time to show them some data! I put together a really quick and hacky shell script that…
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Rancilio Silvia mods – PID temperature control, repaint, and open bottom portafilter
I installed a cheap chinese PID controller inside my Rancilio Silvia V2 espresso machine. Modifying the machine with PID control is not an entirely new concept, however my decision to mount it inside the front panel of the machine (rather than in an external enclosure) is reasonably novel. When I did it, I was not aware…
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Ghetto Lab PSU
Old ATX PSUs can easily be made into really great, regulated, high-current power supplies. It’s an old idea. Banana posts for output (3.3V, 5V, 12V) with a 5A fuse on the AC side plus a neon indicator whenever AC is connected. An pushbutton with LED illumination (driven from 3.3V rail with some current limiting) starts…
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Using Cactus V4 wireless flash triggers as a wireless camera shutter trigger
I briefly searched the internets, but did not see that this had been discussed before. It turns out that you can use a Cactus V4 (and maybe V2) flash trigger as a wireless shutter trigger. In other words, you can remotely trigger you camera’s shutter from afar! Triggering the camera is as simple as pressing…
Recent Posts
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- Fix for nonfunctioning power window in 2007 Mazda3
- Sonoff, meet powerstrip
- Netinstall for RouterOS in Virtualbox (on Mac OS)
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Comments
Amazing instructions! I have spent half a day struggling to recover Mikrotik from failed firmware update until found these instructions.…
Thanks for posting! That worked on my 2007 Mazda3.