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RoadTests & Reviews

160 posts
dubbie

BASYS3 RoadTest : SISC#2

Posted by dubbie May 24, 2018
The first step in my Road Test of the Digilent BASYS3 was to download the Vivado software from Xilinx. My first post ended with me waiting for it to download. I somehow think that web sites and me just do not go together as it turned out that I downloaded the update rather than the package itself so I had to go through the whole process again. Xilinx do make their software downloads a little bit confusing as there are only a few references to the free web pack version of Vivado that can be used ...
rscasny

What is a RoadTestPlus?

Posted by rscasny element14 Team May 21, 2018
A RoadTest is a product review where a supplier provides a product at no charge in return for a review or project-build by the reviewer. Products offered for RoadTests are usually a development board, small board computer, or a piece of test equipment. Other than general knowledge about the product or technology, all members of the element14 community are eligible to apply and compete to be official Roadtesters. But what happens when the product requires specialized knowledge or requires a uniqu ...
fyaocn

5 Test on Super Capacitor

Posted by fyaocn May 10, 2018
Continue with 4 Test on Switch Shields_ Infineon Smart Power Switch Bundle   5 Test on Super Capacitor Using Super-capacitor in parallel with LED arrays to test the on/off status and voltage surge on pulse. This is meaning to test the protection features of the protection shield since the capacitor can make the waveform analysis complex. In this test one 5.5V 1.0F super-capacitor is used. It works fine, not triggers fault during the process. Larger capacitor is  needed for this test ...
My pi-top arrived last week! To not keep you in the dark until the very last moment, I've decided to split up this review in multiple blog posts, each with a specific topic to cover. The actual review will then link to these blog posts along with a description and conclusion. As the title suggests, this first blog post will cover the unboxing and setup of the pi-top, with some initial impressions of the product.   Unboxing Physical Installation Build Quality pi-topOS  ...
Currently awaiting package from UPS - tracking suggests NEXT Thursday as it is coming from USA. They make the kits in Nottingham, 25 miles from my home in UK. ...
tonygo

Kitronik INVENTOR'S KIT

Posted by tonygo May 3, 2018
Awaiting delivery from UPS. Once the kit arrives I intend to follow the instructions in the booklet and report on how I get on. I'm a retired IT teacher (started teaching coding in1968 with Fortran IV) but have little experience with Block coding. I've a 9 year old granddaughter who will also be helping me with some of the experiments. ...
Adding Table of Contents (Suggest me if you have a better method)   Step 1: Add the 'Table of Contents' from here, This is how it will look like in your Editor The final version will look like below which is your table of contents. You can click a particular link to navigate to that section in this page. Heading1 Heading2 Heading3 Heading4 Heading5 Heading6   Step 2: Go to <HTML> option and change a word to heading as shown below. This is will p ...
In Part 3, we designed and implemented the hardware side of the project, using Vivado. After placing and connecting all the IP blocks, we synthesised, implemented and generated the bitstream for the Arty S7 board. A quick test gave us a good indication the build was good, so now that the system is ready, we need to write the software for our application, which will run on the MicroBlaze and use all the modules created in the FPGA.   As mentioned already in the previous part, the great thin ...
One day before the final day of the review on this DC/DC TPS54424/20 Converter and the parts arrived. As a summary of the day, it was a roaring success. I was unable to spend the time I wanted before the end of the review process but have managed to successfully replace the parts to obtain 5V. I cannot at this time finalise the test so I plugged it in to check some of the attributes.   Component Installation: One of the challenges I experienced was the component selection. I had a WEBENCH d ...
After exploring in Part 1 what we got with the Arty board, and in Part 2 what tools we are going to use, it is time to spring into action and build an Infra-Red thermal detector based on the Arty board. For the sensor, I’m going to use the Panasonic  AMG8833 Grid-Eye , more specifically I’m using the Maxim MAXREFDES131 board, which I had the chance to road test last year (1-Wire® Grid-EYE® Sensor w/Arduino-Compatible PCB - Review). This board supports both OneWire and ...
First of all I would like to thank the Element14 Roadtest team for giving me the opportunity to review the Spartan S7 development board.   Introduction   I got introduced to the Xilinx 7-series FPGAs back in 2013 and I’ve been wondering for a while why there is no Spartan 7. At certain point I thought that the 7-series marks the end of the Spartan family. Recently I was happy to find out that Spartan is far from over and now thanks to the Roadtest team I get to experience the ...
dubbie

BASYS3 RoadTest : SISC#1

Posted by dubbie Apr 9, 2018
I was excited to be chosen as one of the additional RoadTesters (Beep Beep - or is that the RoadRunner) for the Digilent BASYS3 FPGA Introduction PCB. I proposed to design and implement my own microprocessor based on the Reduced Instruction Set Computer (RISC) philosophy. This philosophy can be a bit confusing as most people would consider this to mean a smaller number of instructions, whereas the reality is that it means each instruction is simplified. One of the effects of this is that the tot ...
As already mentioned in The Digilent Arty S7: An Unexpected journey - Part 1 - The Board, the heart of the Arty S7 is the Spartan-7 FPGA. In this article, I will explore the tools available to work with the FPGA. As my focus is the Arty S7 board, it goes without saying that when I talk of FPGAs, the reference is to the Xilinx’s Spartan-7 (although many considerations might apply to FPGAs in general).   If you are approaching those devices for the first time, there is a nice short int ...
Resolving Errors In the previous main review post, feeling relaxed knowing that the bulk of the review had been completed, it was time to stand/sit back and seriously consider my errors in the review. It is no use criticising Texas Instruments as it is expected that the EVM board would have been tested to perform at the optimal point. So obviously the first thing to consider is anything that I would have done. For this next stage of the review process I will make comparisons to my past result ...
Part 2: Test the analog features of the TPSM84A21 EVM   To be Tested Features of TPSM84A21: Output voltage ripple measurements (with and without external capacitors) Tests at high output current with external load The Vin, Vout and PGOOD start up waveforms The Vin, Vout and PGOOD shutdown waveforms   Features of TPSM84A21 IC: Ultra-Fast Load Step Response Efficiencies up to 88% 1% Output Voltage Accuracy 4 MHz Switching Frequency Synchronizes to an External Clock Power ...

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