All along I knew I wanted to figure out sound for Dodo because a game system just wouldn't be right without it. I have been going back and forth with lots of different approaches in my mind. Dedicated sound generation chips that mixed both digital and...
I got stuck in trying to debug what went wrong in the Fuzix boot.To combat that frustration I've been working on learning Kicad 6 properly, while also trying to design a PZ1 PCB around the Raspberry Pi Pico instead of the Teensy.The Pico is really cheap...
My deflection pcb is all assembled. I am waiting for two 24V dc power supplies I ordered to come in. They should be here any day. I will use them to power the deflection pcb. Someone asked about the turns on the yoke. I used 92 turns per side...
ReviewI build a simple compiler tool train for Subleq but the results are quite disappointing. Subleq is very memory inefficient:12 lines of high level language coverts to74 lines of OpCodes (95 words), which converts to3126 lines of Subleq including...
Got an SDRAM breakout board ordered with OSH park today, so at some point I'll try out the SDRAM library (on XS-2, likely). I have an MT48LC16M16A2TG-6A:GTR (256 mbit, 16 bit ifx) to put on it. The "header" holes in this PCB are large because they are...
I designed some supporting brackets to sandwich the LCD Module to the PCB. Standard 0.1" female header pins were used on the PCB side, with the male header pins on the LCD side. This brings the PCB separation to 11.0 mm. With 1.6 mm PCB thickness on...
03/04/2018I ran a simple wifi scan program as a test of the antenna performance and found the chip antenna quite disappointing. For the 1.2-inch wire antenna, I found the two wifi hotspots in my house (router and extender) at RSSI of -27 and -59 dB,...
Revision 0 had some major issues and bad design choices. Revision 1 ended up getting a complete rerouting of the PCB, the VGA interface changed a great deal, and the Padauk PMS171B no longer has a place in this project (though I will absolutely...
I finally got around to reworking the PCB to route the 4x PLL directly to one of the output drivers. It only took a few mm of wire and a steady hand. With this mod, the input signal is buffered, the frequency is multiplied by 4, and the result...
Issue 3 has one and only reason...I have a lot of 6809EP / 6309EP CPUs. Unfortunately, some sellers has a 6809EP, but marked as a 6809P. The biggest difference between E and nonE version is that nonE version has a built-in oscillator and pins E and Q...
Created a SPI_Master in the PSoC TopDesign.cysch file: PCB Schematic PSoC pin list Signal NamePSoC PinH3 pinMISO76H3-6MOSI77H3-5SCK78H3-4SS79H3-3Power+5VH3-2GroundGNDH3-1 SD Card Adapter These adapters are dirt cheap on Ebay. The extra row of pins allows...
The BCD to 7-segment decoder circuit schematic and PCB are shown below. Two errors were found in the decoder circuit. When translating the LTspice circuit to KiCad I mislabeled the NOR gates as XOR, leading to incorrect row 00, and column 00 decoding....
With the polar vortex effecting much of northern North America this past winter, there was some "discussion" among politicians about how solar power would operate in the cold temperatures. Undeniably cold can negatively effect batteries, snow cover on...
MORE FLAGS!!! WUT?! The remaining flags were sprinkled throughout the internet, the badge, and other places throughout the year. Here's what you may have found or missed...I Found code: PCB QR Code Go ahead scan it...see what happens... Found code:...