It’s been awhile since there has been an update to the firmware or the Java app. I have been working on them on and off for a few months now and I am finally at point for a release. Both the firmware and the Java app have some significant and important changes. I hope this brings some useful changes and lays the groundwork for future updates. Now onto the details… Arduino Yun booting and running OLED Adafruit Test Sketch – USB data not connected to PC Java App: https://github.com/FriedCircuits/FC-USB-Tester-Data-Logger-App Start of changelog Uses temp file instead of memory for better long term logging Able to resume unsaved session Remote control of USB Tester display Option to stop updating graph for …
USB Tester and the DigiSpark Pro
After supporting the DigiX on Kickstarter, I have become a fan of DigiStump. So what better way to support them than buy stuff? I supported their new Kickstarter this year for the DigiSpark Pro. I got the beta kit which they made at their office and it came with the extras along with being shipped sooner. I posted about the details earlier: http://www.mobilewill.us/2014/06/digispark-pro.html. I finally got around to doing some basic power testing with the USB Tester. I took this picture just before our vacation. Running the basic blink sketch its using about 22mA. Which is less then an Arduino Uno.
Improving Cooling on Fury Miners
Over the summer, I began adding more miners. The weather had started to warm up about the same time so the Furys started to increase in temperature. In our area most places do not have air conditioning, so we are up to the mercy of the weather. Most of the year it’s a cooler climate off the central coast of California, but this year it has been much warmer. Even without the weather, the Furys ICs would get hot but not the casing, which is a giant heat sink anyway. That told me there is poor thermal transfer. I had to do something about it. Cooler ICs means less hardware errors which means more accepted shares. Upon research I narrowed …
On the Web: Circuit Construction Set
During my day job a call was mistakenly transferred to me. It was a teacher that needed help with a website not loading. Normally I only take calls related to the systems I manage and support. Turns out it was a Java applet that a science teacher was trying to us in the computer lab. Once he emailed me the link and I saw what it was, I got excited. It’s a Java applet that you can learn basic circuits. Check it out below. Click to Run http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc Turns out downloading and updating Java fixed it. The joys of Java!
Tessel Has Arrived!
Origianlly posted June 23, 2014… Last year in 2013, I backed one of the first projects on Dragon Innovation. It’s similar to Kickstarter but geared more for hardware and without the restrictions. Basically it’s a cross between an online shop and crowd sourcing mixed into one, since you can buy/support multiple of rewards. One of the launch campaigns was the Tessel. Tessel isn’t just another microcontroller platform, it’s platform that allows you to program it with Java but more specifically NodeJS! Pretty cool, ehh? There site has all the details http://tessel.io. But here are the specs from their site: The Nitty: Programmable via JavaScript 14 different hardware modules for added capabilites Compatible with 10,000’s of Node.js packages on NPN Deploy over …
DIY: Miner Rack
Over the last few weeks or so, I decided to build a rack to hold my ASIC miners. This way they are nice, tidy and not all over my desk! Commonly, GPUs miners make a wooden open air case so I decided to design something similar. Total power usage from the wall is 377-379W. Not bad for 11MH/s. One thing to note is the Gridseeds don’t get very hot so in turn their fans keep the Raspberry Pis cool which are zip tied above them. Parts: 5x 4ft Strips of wood Pack of finishing nails Wood glue Zip ties Gray primer spray paint Black gloss spray paint Small nails (keep miners in place) Mining Hardware: 8x Fury’s: GAWMiners 2x GridSeeds: GAWMiners …
ZenMiner: RPI Temps
The first week of the Fury’s (Zeus Blizzard) Scrypt miners from GAWMiners came with a free ZenController. It’s basically a Raspberry Pi, case and a memory card that is setup ready to mine using ZenMiners cloud service. Simplifies the process of setting up mining without a computer. Yesterday I had an issue with the network connection to my ZenController and I noticed the Raspberry Pi was warmer than I am used too with others. Upon inspection, I realized the bottom label is covering the only holes for ventilation. There isn’t any on top or sides. Even without the label there should be vents on top like most cases. If you get one of these, the first thing you want to …
DigiSpark Pro
Digistump is the company behind the Digispark and DigiX and now their latest Kickstarter the Digispark Pro! They are a family owned company based in Portland, Oregon. I backed the Digispark Pro with the Beta Edition as the reward. This has to be one of the fastest Kickstarters I have backed as it was funded May 11th, 2014 and I received the Beta Edition June 22nd, 2014. Here are some pictures of the Beta Edition. Bottom center Digispark Pro The Digispark Pro Beta Edition comes with an extra “shield”. This shield has an 8×8 LED Matrix, joystick, LDR(Light Sensor), MAX7219 with socket to drive the LED Matrix, and all of the needed passives. All you have to do is solder …
DP Free PCB: Bus Pirate v3.8
A few times a week Dangerous Prototypes hosts a free PCB giveaway on various social networks. They also give away coupon codes to those who submit completed PCBs (from the giveaway) to use on another free PCB. It’s really an awesome way to practice soldering. I was able to do this with the XT IDE Disk Controller. Some time ago (days, weeks, months?), I finally redeemed my coupon for a Bus Pirate v3.8 PCB. I already have an older version from Sparkfun but I thought this would be a fun project and a way to get a newer DP version with microUSB. Plus, it follows their SOB standard PCB sizes. Also, I haven’t had any experience with a PIC. Unlike …
Live Raspberry Pi Power Usage!
Since the release of the Raspberry Pi, I have had one on my desk powered up. It’s my go to Pi that is always available on the network. It’s mostly running Python stuff and eXtplorer. After all this time, I have always wondered what it really costs to keep a Pi powered up 24/7/365. Then one evening, it dawned on me, I have the USB Tester why not use that? Doh! One thing lead to another and I realized why not log the serial output to the Pi itself. Using my existing Python code for logging motion to CosmXiviely, in one night, I could easily set it up to log the RPi power usage to the cloud. Pretty freaking sweet, …
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