I have some great news regarding the site. As long time readers probably remember, I’ve done several hacks with my Picoscope 2204 in the past, including a $5 logic analyzer and the latest composite video decoding article. Since I really like their product, I contacted Picotech and asked if they would be interested in working together more closely.
To my delight, the friendly people at Picotech had also noticed the hacks and agreed to sponsor the Code and Life with the extremely capable Picoscope 3206B. In return, I’ve added a “Sponsored by” box to the right which features Picotech and their Picoscope products, and will continue to feature Picoscope-related stuff in the future, and they’ll also have the permission to use those articles on their own. My warmest thanks to Picotech for their donation!
The first concrete result of the new, beefier 200 MHz scope is that I was able to redo many of the measurements in my Raspberry Pi GPIO benchmark. While excellent otherwise, my older Picoscope 2204 with 10 MHz bandwith and 100 MS/s sampling rate was not capable of analyzing the 14-22 MHz waveforms generated by the Pi very accurately, while this was no problem for the 3206B which has 10x the maximum sampling rate: See Benchmarking Raspberry Pi GPIO Speed for details!
Now that I have a scope with more buffer memory, I’m also going to revisit the composite video decoding and see if I can get full resolution, maybe even colors out of my Raspberry Pi composite output using the 3206B. After I get some experience with the new scope, I’ll likely do a review similar to my previous Picoscope 2204 review.
One of the nicest things when starting a new hobby is that there’s just so many things you don’t yet have, and can thus look forward to researching and then maybe buying if the price is right. In electronics, you can pretty much get started with a $10 soldering iron, $25 multimeter, maybe a $30 programmer if you want to use microcontrollers, and then just buy cheap components to tinker with. But sooner or later, you start thinking about how nice it would be if you had an oscilloscope.
For me it took about nine months. I saw an article on using AVR as an RFID tag and noticed I could build a simple RFID reader with a few components. However, to really learn something, it would be nice to actually see the 125 kHz RFID carrier wave instead of fumbling blindly with the schematics. Additionally, I could use the scope to verify DIY D/A circuits, maybe debug serial protocols and much more. So I started researching.
Getting a used analog or digital scope from eBay was of course one option. However, old scopes are big, clunky and I don’t really have much table space. And if the scope fell out of use, it would be wasting space in a closet. New Chinese-made digital scopes from Owon and Rigol looked good and were relatively small and light. However, they had 640×480 or 800×600 displays and I had 2560×1600 30″ monitor sitting on my workspace, and being more of a software person, I eventually decided against them and chose to get a PC scope instead.
Options in USB scopes
Going through the options for digital scopes, there seemed to be a few price brackets:
Continue reading PicoScope 2204 USB Oscilloscope Review