wondering

Category Electronics

Monoprice Select Mini V2 – Power Switch Replacement

Owning a Monoprice Select Mini V2 is a sure way of getting you on forums where people try to fix various problems with the printer. I had two major problems with the printer so far: Very loud fans after maybe… Continue Reading →

Sonotone – Network for Magnetic Input (DIY)

History A ceramic cartridges is constant-amplitude device and thus, if plugged into a high impedance amplifier which does not load it down, the result is very nice pleasing sound without a real need for a RIAA equalization (see for example… Continue Reading →

I.P.R.S Baneasa, Sirena Electronica Autosalvare (7802)

The first electronics kit I even put together was a an ambulance serene generator my mom got me after I insisted to get one. It was produced by I.P.R.S Baneasa, kit number 7802. I was so happy – it worked… Continue Reading →

Panasonic RF-3500 (GX500) low audio volume fix

A friend asked if I could have a look at his Panasonic RF-3500 radio, which, he explained, exhibited very low output volume. I agreed, both curious and reluctant, as I have never attempted to fix a radio before. Initial checks… Continue Reading →

Installing a thinner PI-Fan inside a Raspberry PI Case

What if the fan is too thin to be properly seated within a Raspberry PI Case ? Simple, use Aquarium 5mm tubing for DIY washers! Having ordered two RPI cases without fans and buying the fans separately, I discovered that… Continue Reading →

Feather HUZZAH ESP8266 – Realistic Power Consumption

The Adafruit Huzzah esp8266 is too power hungry to be used by itself on battery (batteries). This blog is a summary of my attempts to get it to run as long as possible in a real world scenario: periodically send… Continue Reading →

picoFarad Meter using Arduino Leonardo

As part of a soil humidity monitoring system, I needed to test how much the water (used as a dielectric) can influence the capacitance between two metal plates inserted into the ground. The capacitance is very small, in the pF… Continue Reading →

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