Semidigital Meta Adventures

Steve part 8

Sun, 18 Dec 2022 09:08:35 +0800

SPORK!

Sat, 06 Mar 2021 07:06:47 +0800

Build a Boneless SOC

A little cpu and the things that you need on a FPGA

Powerlines

Tue, 12 May 2020 11:41:00 +0800

Some power lines

Absent

Sun, 15 Mar 2020 13:13:50 +0800

This blog has been sorely negelected. My intent over next few decades is to catch up on my progress. ;)

New Boneless-v3 and the Gizmotron

Sat, 03 Aug 2019 08:46:36 +0800

Working Boneless v3 Finally managed to get the new version of the processor running on my TinyBx this is in concert with nmigen , nmigen-boards and Boneless v3. I have wrapped all this into my workbench for the project in Gizmotron Gizmos from .gizmo import Gizmo, IO from nmigen import * class _warmboot(Elaboratable): def __init__(self): self.image = Signal(2) self.boot = Signal() def elaborate(self, platform): m = Module() m.submodules.wb = Instance("SB_WARMBOOT", i_S1 = self.

Feline OverDomesticus

Wed, 24 Jul 2019 15:39:46 +0930

orginal image

Alien Space Dino

Mon, 15 Jul 2019 10:47:52 +0930

An alien space dino orginal image Twisty and Chonky Crayon on Cartridge , A3. SGK20190713

Getting gateware going

Sat, 13 Jul 2019 08:08:35 +0800

Finally managed to get TX working on the gateware uart, RX is next. Having a UART means that it can talk to the outside world.

Steve part 5

Tue, 04 Jun 2019 20:36:15 +0800

mmmm BRAINS

Now that I have the TinyBX mounted and connected the time has come to get some gateware going. After some research I settled on nMigen. It is constant development and m-labs is working hard to get it running. There is a repository of my code as I develop it.

Steve part 4

Tue, 21 May 2019 21:29:55 +0800

STEVE’s new look orginal image A 3.3V supply has been added to drive the TinyFPGA-BX and other 3.3V devices. Once the power supply was tuned (tiny multiturn pot) some nail polish was painted on the screw so it does not move. The 10V rail (8 AA , NiMH) has been covered with Kapton tape to avoid accidental shorts. There is also a 5<->3.3V signal converter, so there are 8 lines that can be broken out to the other side of STEVE.

Steve part 3

Wed, 24 Apr 2019 06:48:22 +0800

The compass (digital) HMC6352

Finding a path forward.

Steve part 2

Mon, 22 Apr 2019 11:24:57 +0800

Neatness I have finished moving the ardino across to the perfboard , apart for an unexpected short it is working. orginal image orginal image Now for compass integration and rewriting the software to have much more nuanced control. I will need to break out the current probes on the motor controller to get the drive chopping properly.

Steve part 1

Mon, 22 Apr 2019 08:02:39 +0800

STEVE is brake steer rover.

It is based on the Tamiya tracked chassis.

Infrastructure

Sun, 21 Apr 2019 11:39:11 +0800

Software and services that help instead of getting in the way One of the things that crops up again and again is that computers do what you told them to, not what you meant. SO ANNOYING

Boneless

Fri, 19 Apr 2019 20:07:38 +0800

A gateware CPU

The Boneless-CPU is a soft CPU written in nmigen by Whitequark.

It is a 16bit Von Neumann machine with a completely flat memory space , registers and all. The gateware is nice and compact and fits into about 500 LUTS plus memory.

FPGA

Fri, 19 Apr 2019 08:55:07 +0800

FPGA fun

I recently aquired a TinyFpgaBX and have been investigating programming RTL.

After doing regular programming , thinking in gateware is a brain melter.

CQparts

Fri, 19 Apr 2019 08:14:03 +0800

Build tangible programmatic designs in python. It is similar in form to OpenScad where you can define 3d objects with code, however it is python and brings all the power of OO to building objects. You can make paramteric object that are an assembly of parts, this is one of my examples for a little project box [] (https://cqparts.github.io/examples/export/showcase/ProjectBox/) It can also generate gltf format files and display them with ThreeJS