Hello, quite a while after my last “I’m Alive” post. Since my last post I’ve bought a broken Philips PM 3240 oscilloscope and repaired it. All that was broken were 4 capacitors on the Z unit, shorted input rectifier (BY179) and a shorted 10V zener diode in the power supply. Before I tested the oscilloscope I built a little power supply because I’ve never had or built one of those, I just used the 5V I got from the USB ports on my computer.

Here’s the schematic since everyone likes schematics.

Here are some pictures of the thing itself

It works fine from 0v to the zener voltage, which in my case is 10V.

I’m thinking about adding some short circuit protection since I have quite a bit of board space left.
If you want to build one yourself, I’ve bought all parts from http://bitsbox.co.uk and the total cost of the whole supply so far is well under 3 euros.

Hello there, it’s been a while since I last posted here. I decided to get back into the dreamcast, not playing games but playing around with the hardware such as the Sega VMU.
I’ve had plans to program for the Sega VMU for quite a while, pretty much a year now. Ah well, here is an image of the Sega VMU’s insides.

Yes, the wires of the piezo speaker are disconnected in the picture. I’ve soldered them back on using some stronger wire.

And damn, this thing eats CR2032 batteries. It runs for about 5 hours on two batteries, pfff.

…soon.

Hello there stranger, welcome to my blog. I hope to soon post a bit of content, eg. teardowns, reviews and stuff like that.
I also plan on doing a series on getting an Intel MCS-85 to work again.

Anyway, have fun.