1. UraniniteTry to buy Uraninite (formerly pitchblende) at a mineral show. I bought some pieces of Uraninite from the famous formerly Russian uranium mine of Hartenstein, Saxony, Germany, at an internet mineral show. Uraninite contains up to 88% uranium....
OKAY, now that we have the raspberry set up, we can star the assemble of parts.Let's make the LCD work!First thing that we need is a adapt board ( its on components list), so we can solder every pin on 40 pin connector to the 40 pin GPIO on raspberry.Now...
After waiting for four months since I ordered them, Mouser finally shipped the SI3404A PoE chip to my CM, so they have started production. I received this picture of the new PCBs: Looking good. I think there shouldn't be confusion about which...
Before going to the serial port subject, I took some time to analyze the display pins. The clocks were easy and matched what I found about some simple color LCD datasheets DotClock : pin 2 (25MHz, 50% duty cycle)HSync : pin 3 (31.5KHz, 88% duty cycle,...
To set the scope of what I am and am not going to talk about here:I am going to describe the pinouts on the IVL2-7/5I am going to talk more about what I did to get it workingI am going to talk about how to test your VFD to make sure it behaves as you...
I knew it would happen at some point. I killed some 30x30 mil LED chips in this stock 10W green package. The remaining good ones still light off DC: Actually two others in the left string also appear at higher currents; before the "event," they all had...
Trawling eBay netted a reasonably inexpensive Accuthermo FC100D TEC (Peltier thermo-electric cooler) controller mounted in an enclosure from Wells-CTI with a 12VDC 8A power supply and TEC H-bridge driver. The FC100D uses PWM and bi-directional...
What is the aim? This log is all about: How can we make the whole board cheaper while keeping all the features and not killing its safety functions. This all refers to the early v0.2 version which is by no means optimized yet! Ways to cut costs I try...
Motor controller and current measurement This will be a long log, so I want to summarize: The motor controller of the “single board” works as expected and we can get a current measurement which is good enough to detect blocked or damaged...
The favorite microcontroller for all things USB, such as keyboards, joysticks or mice, is the good old ATMega 32U4, well known from the Arduino Leonardo. Of course I don't plan to stuff an Arduino-footprint board inside my keyboard, I need a smaller...
Well it's a good thing I wasn't relying upon Mr. Gibbs to navigate the ocean! The system had some issues, to say the least. The bad news is I didn't get to gather any usable data over the weekend, and we did not actually get to use the system at all....
My lab partner, Andrew, and I were faced with deciding on a senior design project to complete our degrees at Lehigh University. Not wanting to waste an opportunity (possibly my last) to work with someone as smart as Andrew, I wanted to take on an ambitious...
The experiments with the RES64 are on hold, waiting for the delivery of more/new parts (and the strikes in France make the delivery date even more uncertain) so I'm back to the ASIC side of the projet. There is significant progress with #VHDL library...
Okay, initial thoughts. As a first cut I want a program that will play a random piano note, so that I can try to find that note on the piano. Basically, I'm tuning my ear to be able to recognize piano notes by pitch. I frequently can "hear"...
The second round of performance testing with this device shows promising results. The main change to the system since the last round of tests is that the built-in 65 degC thermostat has been removed from the silicone pad heaters. The thermostat...