The first step in reverse-engineering any radio protocol is to listen to it on the air. The advent of software-defined radio makes this much, much, easier than before. For this project I've used a nuand bladeRF board and the GNURadio software stack,...
のむむ (@umumon) is a professional robotics engineer who has dedicated his life to building robots of all kinds. He made Stack-chan walk. No, I'm not kidding. I couldn't believe that such a small robot could walk either until I saw it in action....
The implementation of getting the current time went really well, and its improved the project nicely.The last project log details how I used a HEAD request to google to get the current time in GMT, and convert that to CST.I decided to do a request for...
This Blog is about making a nutrient dosing system for hydroponics that is plug and play, I didnt quite get it to the full stage of plug and play with this version. But it is almost there. Because the change of nutrient strength of our systems can be...
There are some options for assembling 6800 code today. Ideally, a cross assembler would be good from Windows. Herb Johnson has adapted William C Colley III's A68 6800 cross-assembler. The A68 assembler runs in DOSBOX under Microsoft Windows. Output Format...
3-11-2024 See these two 2011 Liliputing and TechCrunch articles, which were partly the inspiration for this project: https://liliputing.com/pixel-qi-suggests-low-power-tablets-could-be-powered-by-1w-solar-panels/(6-3-11) https://techcrunch.com/2011/06/04/first-solar-powered-laptop/ (6-4-11)...
Suite-16 The inspiration for this project was to design a 16-bit TTL computer loosely based on Steve Wozniak's 16-bit virtual cpu "Sweet-16". It written in 6502 assembly language to augment the Apple II when performing 16-bit operations. Sweet-16...
Remember the last logs : the goal is to use as few transistors as possible to send a string of consecutive non-overlapping pulses to several pass-gates. Here the design uses NPN as primary type but it will be reversed later because PNP are the majority...
Realising that I had the simple yet inescapable choice to finally look into a strong and stable life-management system or chaos continuum, I started searching around on Friday 24th Nov when I said to myself "I feel that if I set the budget for the HMD...
From OpenCores PDP-8 page: Features In this FPGA implementation, the PDP-8 CPU can be configured to emulate the instruction execution of a PDP-8 (Straight-8), PDP-8/S, PDP-8/S, PDP-8/I, PDP-8/L, PDP-8/E/F/M, PDP-8/A, HD-6100, or a HD-6120. The...
Now that we can read SD cards and have an I/O interface in place from the Z80 to do I/O mapped access to the SD card it's time to hook the two pieces together. To do this we will need to look closer at how Grant's code request blocks. The loader...
Using a counter for the ISRI received a suggestion to use a counter and trip method for the Interrupt Service Routine (ISR). While is was not keen as the method (Direct Digital Synthesis) is pretty standard and gives the best long term accuracy. But...
After another long hiatus, I've come back to this project. Let's break this thing!I've etched a new board that lets me access important pins (serial TX, RX, CLK, BUSY ; RST and power lines) without having to fiddle with the previous hacky breakout board.I've...
10/24/2020: I gave a talk about Talker/80 on TrashTalk Live #8: The INPs and OUTs of Talker/80, A Modern Voice Synthesizer for the TRS-80. Thanks to Pete Cetinski (TrashTalk host) and Arno Puder (known for his TRS-IO) for inviting me; here is the PDF...