CAD work and fabricator begins today. It is our hope to start piecing together the first parts this afternoon. It is going to be a long push up hill from here, but we do not have a scope change, yet. As soon as we have the first parts done we will start...
We have some bytes from the tablet. It's all pretty standard stuff with one exception.// unenc init a4 w f0 55 a4 w fb 00 Read ID Bytes a4 w fa a5 r ff 00 a4 20 00 13 // Enter enc mode a4 w f0 aa // write 16 byte key a4 w 40 e0 7d e0 7d e0 7d a4 w 46...
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...
This log includes major upgrades included in the current system.Till now we had been using an older OS incompatible with RPi 3 since the display could have only worked with that image. Additionally it caused the trouble where the onboard or external...
Tonight I gathered some reference/research material for this project. Fortunately, several others have done some really great work with this module, so here's credit to them: LTC3780 DatasheetBeyond Logic blog postTemplaro blog postGreat Scott videoJulien...
Putting everything together also requires checking everything separately first. So I did with the MiCS-VZ-89T sensor, and here is the story, also presented on my blog: MiCS-VZ-89 Air Quality SensorA low power sensor that can measure at the same time...
Digging into SD card writes means shifting gears from the Boot BIOS source code since the Boot BIOS code only does reads. The CP/M BIOS code (CBIOS128.LST) which does the reads/writes after booting. Here's the BIOS code for writes to the SD Card: 0754...
Long ago when I started prototyping ideas, I was using a $89 FPGA Board (Avnet LX9 board). The ChipWhisperer system has always supported this board, but it's not as well documented as my newer, fancier hardware. I wanted to make a log post to demonstrate...
An article recently published on MOONGIFT, a Japanese developer site, has showcased RasDash! The article is entirely in Japanese and Google Translate won't accept the URL as it has special characters but YANDEX does. Below are some links and a basic...
Morning update: April 13, 89 PDAfter a long night of fighting with 123D make and my 3d printer, we have our first put together. To see very bad pictures of the Main Power/Data Bus (MPDB) look at step 2 of the instructions. After getting put together,...
It's been a minute but there is an exciting new update on Dodo! The original Dodo Playground is a bit long in the tooth and sadly Chrome Applications had been deprecated so there was no longer a good way to flash Dodo games directly from the browser. ...
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 ended up using the key combination for On and Mode (it seemed appropriate) to change the mode, which basically is between TI-83 keyboard mode for the TI-83 emulator and Regular mode which allows through various submodes access to just about all of...
So, working with the BME680 has left several odd impressions.1) The gas sensorNo idea what it is measuring, but it does measure something. For example, a Sharpie, immediately picked up. It reads in Ohms. Range seems to be around 10k...