Build a low speed scope with a PIC18F2550 and a graphical LCD

Steve build a low speed scope from a PIC18F2550 microcontroller and a graphical LCD. The MCU takes 60k samples per second from it’s analog-to-digital converter. It proceeds to process the signal and display it and some basic information on the screen. Steve left the source code, and the schematic on his site. Using the PIC18F2550 […]

Experimenting with buck DC/DC converters

Mike wanted to build a DC-DC buck converter. He didn’t stop at building one, he wanted to perfect it. So he built it on a breadboard and started experimenting. By exchanging various components and watching a scope for results, he was able to get the results he was looking for. The buck converter takes a […]

Replacing RIGOL DS1052E DSO rotary encoders

Markus did a repair on his scope: yesterday I decided that it was about time to replace the bad performing rotary encoder for the time-base of my RIGOL DS1052E DSO. The encoder seemed to work fine when I bought the scope, but after a few weeks it already started to change the time-base quite randomly […]

Seeed’s DSO Quad available for preorders

After the successful DSO Nano Seeed is finishing development of new pocket scope called DSO Quad. Engineering samples started shipping in late December 2010, now the beta testing run is available for preorders at $159. Be aware that the actual shipping is scheduled for March. DSO Quad has two analog inputs up to 36 Msps, […]