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How to Build a 14MHz Accelerator Card for Your Amiga 500 – Mingo’s Step-by-Step DIY Guide
#Amiga500 #Commodore #RetroComputing #DIYHardware #AmigaMods #68K #AmigaAccelerator #SolderingProject #RetroTech
https://theoasisbbs.com/how-to-build-a-14mhz-accelerator-card-for-your-amiga-500-mingos-step-by-step-diy-guide/?feed_id=2811&_unique_id=67ffaac545d2b
Last night, we finished building the second transmitter. After minimal debugging we could confirm: alive and broadcasting!
#DIYHardware #CustomHardware #transmitter #POCSAG #POCSAGTransmitter #pager #broadcasting #hamradio #RaspberryPi
Aww yeah the parts for my new hardware project arrived!
Two Alps rotary encoders and a controller board to reuse an old iPad gen2 lcd panel.
😏 wonder what I’m up to!
First day's case re-production arrived and it looks much better than the last batch.
The base is flat. The insert nuts are clean. The aux header retaining pegs aren't missing, and the lip isn't deformed. They really slowed down and did proper quality control.
Manufacturing..
#buspirate #electronics #opensource #DIYHardware #injectionmolding
Silkscreen uncle just finished adding the Bus Pirate 5 pinout labels to KF141 quick connectors. We chose the highest quality connector we could source and had the pin labels printed in bright orange to match the release levers. Things were backed up a bit, but the result is nice...
Clear back in September (!), when the Bus Pirate enclosure tooling started, there was a flash card slot. Recently we swapped it for a NAND flash for speed. However, now we have a unused slot in several thousand enclosures. This plug, made in OpenSCAD, fills the hole. Eventually..
REV10 boards arrived. New buffer works, but the cheap Schottky diodes from my favo comp manuf are LEAKY. Bought the Diodes INC version. Installed one but the problem disappeared. Why? Cold morning. Roasted on the radiator a bit to enhance the leakiness. The genuine part on io6/7
NAND flash is up and running. Access from the terminal was a breeze, but there was some unpleasantness getting the USB MSC disk working. Spent a day debugging spin locks based on the debugger output, but turned out to be a simple buffer overflow due to NAND block size. Tomorrow..
1Gbit NAND flash test board.
The SD card was limiting the maximum speed of the internal SPI bus shared with the LCD. I've already dead bugged a chip and tested it at low speed hanging off the Bus Pirate IO header. It works like a charm for both internal storage and as a USB disk...
Do you have a favorite quick connector? I made a small PCB to use KF141 connectors with Bus Pirate 5. KF141 comes as single terminals that stack together with 2.54mm pitch between terminals. It comes in vertical and right angle versions. Very handy for quick bare wire hookups.
Sample AUX cable with dyed crimp housings just arrived. Very pleased!
Black housings are common, but the dyed-black version reflects light like the other dyed parts and seems to match a bit better. AUX doesn't have a power pin, so we didn't do red at first, but after seeing the..
SI7021/SHT21/HDC1080 are nearly identical inexpensive I2C temperature and humidity sensors. Macro (2) in I2C mode demonstrates how to access it with the Bus Pirate, and reads out the key data. I'm still experimenting a bit how best to include device demos - both built into...
Bus Pirate 5 firmware v0.1.0 is here! The new command interface works more like a typical PC command line. Bus syntax (talking to chips) uses a three step compile-run-report process for extremely tight and precise timing. Next week I'll go through my big-ole-bag of breakout...
Programming and testing went okish. There were three issues. BP checks VUSB, old test PC with out of spec USB ports (Vusb<4.75volts) caused fails. Small race condition during self test caused a few over current alert prompts (flashing inverted screen colors), simple code bug.
:toot: Bus Pirate 5s and the production tailings.
A surprising number of the reels are direct from the manufacturer: connectors, diodes, FETs, transistors, etc.
International brands like #TDK #samsung came from #szlcsc or the #huaqiangbei market. Look at all that bubble wrap, yuck. :AAAAAA: #buspirate #electronics #DIYHardware #opensourcehardware
Jiangsu, evidently!
We did a deep dive on the cheap test hook/probe ecosystem. There are more and better quality probes than ever before. We're still searching for the origin of the cheap "Shennie" hooks that have been around forever.
#testhooks #testprobe #buspirate #DIYHardware #opensourcehardware #electronics
There had to be a better way to connect a probe cable to a breadboard or pin header. Something better than probe hooks precariously clipped to the end of jumper wires...so we hired a pogo pin manufacturer to mill a custom pin.
Normal screw and spring turning factories can't handle the specs, but pogo pin manufacturers can. Keen observers will note that the photo doesn't match the diagram. V2 is in production and will be here within the week.
Shenzhen speed! The LCD supplier sent the wrong display for Bus Pirate 5, but sent the correct one by courier immediately. The assembler and LCD factory are both in Bao’an district so production should resume within an hour. That’s Shenzhen speed, and it’s amazing when it all works out well! #buspirate #opensourcehardware #pcba #manufacturing #shenzhen #DIYHardware #electronics
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