Is your I2C bus not ACK'ing the way you expect? Do you need to discover a UART's mysterious baud rate? Or do you want to reverse engineer an SPI protocol? These all sound like jobs for a logic analyzer! With the growing ubiquity of UART, I2C, and SPI sensors, logic analyzers are becoming a tool everyone needs in their toolbox or on their workbench. This 8-channel USB Logic Analyzer with support for sampling rates of up to 24MHz provides a good while economic option making it a great tool for quickly diagnosing most communication issues we encounter.
These analyzers will work with both 3.3V and 5V systems (up to 5.25V max and 2.0V minimum on a high logic-level) and is powered via an included mini-B USB cable. This logic analyzer works with PulseView -- an open-source, cross-platform signal analysis software suite.
The analyzer ships with Female-To-Female jumper wires. If you're using an Uno or board with female headers we recommend picking up a handful of Male-To-Male jumpers to connect the analyzer to the female headers.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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I installed PulseView on linux, it does what is expected. I'd recommend getting a male/female wire with it so you can use it on a proto board more easily.
Not having any luck loading drivers. Program was crashing on startup, loaded C++ to fix that, now it doesn't find the device drivers. Zadig doesn't seem to help. Windows 10 64 bit laptop. PK
I'm old enough to remember budgeting $40k for a 2nd-tier logic analyzer--having one at home is just unreal to me. Don't debug hardware without it. You will want to buy the Bus Pirate cable (https://www.sparkfun.com/products/9556) to go with it--it's much more convenient to have the single connector to plug into the logic analyzer than fiddling with 10 individual cable ends.
I've used this to reverse engineer a three wire SPI protocol and inspect an I2C bus. So far it works exactly as advertised. Using the PulseView software with it is very easy and straight-forward. Overall I'm very impressed with what you're getting for the price.
For $20, how can you beat this? I was trying to debug an SDIO interface between an MCU and uSD card. This thing combined with the open source PulseView software, and voila, I got tons of insight into what's going on. Even at just 24MHz, this is fine for most of the projects I'm working on. I highly recommend it!