Reading this Japanese article on a kit sold in Japan to build a Z80-MCB, I realized the presence of a possible bug seeing this two images: As you can see, there is a Z80-MCB without any Virtual Disk or RTC attached and in the resulting screenshot the...
Pleased to discover there are ready to use, non-emulation SD card mux devices available! These are great for 99% of the use cases folks message me about. https://wiki.tizen.org/SDWire SD Wire https://www.tindie.com/products/badgerdnl/sdwire-usb-c-sd-card-reader-sd-mux/...
With the ALU verified and the RAM connected, today the breadboard determined that the first 8-bit Fibonacci number is 144. 0000 0000 ld $00 ; outer loop 0001 c200 st [$00] ; a=0 0002 0001 ld $01 ; b=1 0003 fc0a bra $0a 0004 0200 nop ; (pipelining) 0005...
Size: about 50x50mm (size of condoms I have, could be a little larger if required)Layers: preferrably a single 2-layer PCB, for easier ordering at the usual suspects in ChinaConnections: debug UARTMicroUSB for charging the batterytemperature sensor connectortwo...
I made a 5V, 5W buck derivative that is smaller than the flybuck design but uses the same input/output filter design for low noise/ripple applications. The inductor core is a Magnetics MPP C055048A2. with 38 turns of 24 AWG. Peak efficiency with...
The PCB arrived and they look perfect, not that I had any doubt when ordering at a big Chinese manufacturer. And of course there are mistakes :/ The voltage regulator for USB power to the GPS chip U5 has the wrong footprint. I used a SOT-89-3 foot...
Part list from AliExpress, BestBuy, Amazon, and Newegg (prices as of Feb 2024): Case ZS-A4S ITX case all machined aluminum SFF case from Superbuy 6.2L Ultra Compact Design L:276mm x W:114mm x H:197mm Fits full size GPU Up to 272 x 130 x 42mm....
Requirements Easily found when misplacedBig enough to hold easily but not too big that it's cumbersomeShould have a battery compartment so that unskilled personnel can replace batteries without having to open up the housingRoom enough for the necessary...
MIKBUG (Smithbug) has the following case-sensitive commands. ; V VIEW MEMORY; E CHANGE MEMORY; M MOVE MEMORY; I FILL MEMORY; F FIND ; D DISASSEMBLE CODE; & S1 LOAD PROGRAMME; G GO TO PROGRAM; J JUMP TO TARGET PROGRAM ; T TRACE PROGRAM; K CONTINUE...
I decided that once I get this project working well, that I might make several for family and friends that might need something like this. To that end I placed an order for some HC-SR04 (Ultrasonic Ranging Module) and the HC-SR501 (PIR Sensor) modules...
FlexSEA-Plan is an embedded computer used for high-level computing. It boasts a powerful processor and can run an operating system such as Linux. Developing code on this platform is similar to the regular (i.e. non-embedded) software development process....
I modified Android application and Control Unit firmware so that front lights can also be controlled (brightness, blinking mode) via Bluetooth. Previously only rear lights settings were being sent from the phone. Now Control Unit receives all the settings...
I've redesigned the way screens/apps are handled and introduced a main menu. More importantly, I have managed to get the average current consumption down to 350-550uA (1.5mA previously)! Turns out a huge chunk of it - 800uA, was a bug in the TWI (I2C)...
Before I began the layout of the DDL4-CPU, I came up with an initial Instruction Set Architecture (ISA) for the design. It went through several revisions as I was designing the boards and refined the components. Here at the last minute as I am...