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...munication going with the display using the "simple" protocol (send 0x05 + text + \n). ...IBM point-of-sale (POS) display is reverse engineered to display arbitrary text.

configuration file for this, and the kernel uses a text file called a an ARM boards for which a driver for some component has recently been

...d it, I know how it works and documented it, the original controller board has been removed and replaced by an ESP8266. Each pixel has two sub-pixels (red and green) that can be turned on or off, so it can disp

The basic principle of operation is that the electronic load has a circuit with a mosfet controlled by a microcontroller to draw a configura All of this can now be specified in text files (e.g. platformio.ini) and separately per individual project.

A normal TZXDuino has a row of 6 or so 6x6mm buttons, and either a 16x2 character LCD (with a I2C ...h the 5V line, and that the Display connecter was suitable for that, as it has GND and +5V on two adjacent pins (Pin 1 and Pin 2).

It has an I2C interface, but it seems you need a library from ST to get an actual * A ping-pong ball, used as a target to reflect the laser off of, typically has a diameter of 40 mm.

It has been tested in practice with the 'koppelting1' payload on 2017-8-26. * add support for running this in a Docker container: has been realized, but not documented yet

...drilled as if its one PCB, so all 5 designs in the stack will be the same type, for example they will all be dual sided (or single sided, if the panels ar ...100mm. Note that I opted to give the PCB manufacturer the choice over the type of surface finish, this makes pooling these PCBs easier, as the manufacture

...routines like memory testing, and serial printer and cassette drivers. It has no user interfacing code what so ever, not even a debug monitor. ...ny high resolution graphics, nor even re-programmable characters, it still has a small collection of games.

...onality was then revolutionary, though it was not a commercial success. It has been called "The Internet — 10 years ahead of its time" (even though elem ...s a Canadian system, and that means it is powered with 110 Volt 60 Hz, and has an NTSC composite video output, and neither of these two facts is ideal in

...RAM, one with 16K DRAM and one with 32K DRAM, this last one was called the type 3032, where the 32 stood for the amount of 32K RAM ...ut without any change, So probably one of the elco's in the monitor itself has gone bad, I have now removed the monitor (head part) from the PET, and remo

...IC, so "08" means you need to place a 74HC08 there. All logic IC's are HC type with A possible exception of the CD4002 which you can buy as 74HC4002 or as If you could not find an SMT type of this crystal, the one that comes with a plastic carrier and flat pins st

...total of 11 Buttons are available, so I would need 11 GPIO's. But the zero has plenty of these. ...are wired to a very small PCB at the end which contains just a regular USB type B connector, and two RCA connectors, this can then be placed in a sub minia

...onnector, so you can power the ZX81+38 with an USB charger and a type-A to Type-B (Device) USB cable. I also placed the expansion port connector, which has the normal contact fingers, but can be enhanced with (gold plated) an angle

At the moment the PCB of the first prototype (ZX81+34) has been designed, and is ready to be tested. ...re being made, waiting for delivery next week, also a component order list has been created.

...er, able to drive a VGA monitor in high resolution, and with 64 colors, it has sound, and will have (BBC) BASIC and an SD-card for storage. ...d with most (VGA) monitors, and has a built in keyboard, can run BASIC and has a clear architecture, and is cheap to reproduce.