I was commissioned to do this little job of trust, the repair of a SHARP MZ-800 that had the following problems.

• The composite video RCA connector was torn out.
• The cassette counter reset button was broken.

After several attempts to glue the broken pieces back together and not finding anyone online who had designed it, i decided to make it myself from scratch and print it, for such a small size, the result is quite good.

Regarding the missing RCA connector, i installed a new one by soldering it directly on the modulator chassis.

Gallery:

Download: Reset Button TAPE Recorder Sharp MZ-800 by Xad (0)

Although i’ve already modified an original VideoPAC game cartridge to fith the PicoPAC by A. Ottaviani, i also wanted to try the 3D-designed case by Yannick Erb but i have modified a few things that i didn’t like.

The final result is good.

Here are the modifications i made to Yannick Erb’s case:

• Enlarged the hole to fith the button cover.
• Hole for the firmware update button.
• PicoPAC logo using VideoPAC fonts (there is also a version with a colored logo)
• Guides to lock the top cover so it can’t be lifted or moved left or right.

Gallery:

Download: PicoPAC Cartridge Case by Yannick Erb mixed by Xad (2)

Source: https://github.com/aotta/PicoPAC

Firmware update for FNIRSI® 2C53T Handheld 3in1 Oscilloscope Multimeter Signal Generator.

• 2C53T Firmware V1.2.0

source: https://www.fnirsi.com/pages/manuals-firmwares

A few months ago, i printed 3D the MOS 6581 LightBox but out of laziness i hadn’t yet installed a home automation LED strip.

I’ll leave you with the photos, there’s no point in describing what seems obvious :D

Gallery:

The print of the case for the Commodore Floppy Drive 1541-II Harlequin version has been finished with a total print time of 23 hours (slow print mode), including filament drying.

These are the changes made to the original designs:

• The feet on the bottom of the case have been removed to avoid the need supports; non-slip feet can now be applied without any problems.
• The depth of the square hole on the front panel for the Commodore logo has been reduced.
• Removed the POWER and DRIVE text on the faceplate embossed and not printing correctly with a new carved text.
• The hole on the front panel for the MeGALoDOS OLED has been closed.
• Commodore label for the front panel.

Link original project:

• https://www.printables.com/model/516220-frontcover-for-commodore-1541-ii-with-megalodos-mu
• https://www.thingiverse.com/thing:3348655
• https://www.thingiverse.com/thing:5349480

Gallery:

Download: STL files for Commodore Floppy Drive 1541-II Case (66) (FIXED Download LINK)

Andrea Ottaviani (aotta) has released a couple of firmware updates for the Flash Multicarts based on the Pico Clone (Purple)

PiRTO II v. 1.05b7 (Intellivision flash multicart)

Changelog:

• Added Arduino IDE version, new environment left more ram space and let games until 180kb run.
• Fixed Time Pilot.

WARNING!!! THIS NEW VERSION USE A NEW FILE SYSTEM AND YOU NEED TO FORMAT THE PICO FLASH AND RE-UPLOAD ALL BIN+CFG FILES!!!!!

Download:

• PiRTO II (Intellivision flash multicart) v1.05b7 (79)

source: https://github.com/aotta

I needed a volume control lever for one of my NMS-1515 recorders. I couldn’t find a ready-made STL, so i designed it myself.

I’ve published the STL on major 3D object sites: thingiverse.com, makerworld.com, printables.com, makeronline.com and many others.

3D printing settings:

• Printer Used: Anycubic Kobra S1 Combo
• Filament: Anycubic PLA+
• Color: Black
• Sparse infill density: 50%
• Skirt Loops: 2
• Layer Height: 0.16mm
• Nozzle Diameter: 0.4mm
• Preset: 0.16mm HQ
• Ironing: All top surface
• Support: Tree (auto)

Download: Volume Lever Philips NMS-1515 (D6450) STL (73)

Yet another Chinese product, but for €13 it was worth trying this crazy piece of crap. It works well for the price, but the problem, as I suspected, is the focal length, which is practically zero.

The protective ring MUST be placed on the object, so if we need to identify SMD components, such as 201 or 402 format, it “COULD” be fine, or if we want to see moles on the skin, leaves, hair, tiny insects, a cat’s butthole might even be fine, but if we want to use this lens to analyze broken tracks or micro short circuits with a PCB that uses THT components, it’s no good, absolutely useless because hits the components/pins/soldering points, the viewing range is limited, i should be much further away, but the lens doesn’t allow it and consequently it doesn’t focus.

Perfect gift for my daughter :-D

Gallery:

I made some modifications to the case for A. Ottaviani PiRTO-II cartridge.

I modified the case redesigned by Eskimo, which is essentially a MIX with some improvements to the A. Ottaviani case.

Not satisfied, i created another MIX by modifying the following:

• Removed the tab just below the female USB-C connector. I had already made this modification previously because all the USB-C cables i have available don’t fit; they hit the tab.
• Plugged the LED hole, which i find absolutely HORRIBLE. Since the LED is on the PCB and not flush with the case, it would need to be placed with a piece of fiber optic fiber the same diameter as the hole, which i will never do. Also, the LED is clearly visible if you use a colored filament from the case with a 50% fill.
• A hole for upgrading the firmware without opening the case. Remember that self-tapping screws on the PLA have a short lifespan. 
• MENU button hole was enlarged to include a cover, which makes the whole thing nice.

Download: PiRTO-II Xad Remixed STL Cartridge Case (113)

source: github.com/aotta/PiRTOII

I tried for the first time this circuit to mod the Atari 2600 to have a Composite video output and S-Video instead of RF.

I must say that this modification really amazed me, and i’ve made several others, all very similar for the Atari 2600.

The signal is clean (crystal clear) with both outputs (composite or S-Video), and installation is very simple.

Just place the PCB on the TIA pins (solder side) and solder; no need to remove anything.

I made two different modifications: one with only composite video and the other one with S-Video output as well.

For the version with the composite video output, i always used the same system of installing a 3.5mm female jack in the antenna connector hole (requires removal of the RCA RF plug), everything perfectly secured with a 3D-printed adapter.

For the version with Composite video and SVIDEO output, i used a female mini-DIN, the same one found on the SEGA SATURN.
I soldered the connector’s metal casing to the ground of the RCA RF connector after removing it and also isolated a trace of the RF signal PCB (center RCA pin) that made contact with the metal casing by removing a resistor.

The cable used is the same as the SEGA SATURN; it has dual outputs: RCA AUDIO, RCA COMPOSITE VIDEO, and SVIDEO. I had to cut a strip of about 0.5mm from the plastic casing of the mini-DIN connector to make it fit perfectly in the antenna hole of the Atari 2600 JR.

Gallery with only Composite Video Output:

Gallery with both Composite and Svideo Video Output:

12►

source: https://retrosix.co.uk/Atari-2600-CleanComp-Composite-Video-Out-p537997297

3D printing and replacement of the pulverized gears on the Philips NMS-1515 (D6450) cassette deck.

I decided to print the gears because are available for download on the Thingiverse website.

I modified the hole diameter which was too narrow and added a fastening system for the two fast-forward gears to avoid using supports during 3D printing.

The fastening system is nothing more than a washer of the right thickness and hole diameter that must be pressed firmly into the pin protruding from the gear until it fits.

The final result is good and works, but the gears are quite noisy; it’s still a homemade print and has nothing to do with the original Teflon or Nylon gears.

Some information about 3D printing settings:

• Printer Used: Bambulab A1 Mini
• Filament: ESUN PLA+
• Color: Orange
• Sparse infill density gears: 50%
• Sparse infill density washer: 90%
• Skirt Loops: 3
• Layer Height: 0.1mm
• Nozzle Diameter: 0.4mm
• Preset: 0.16mm HQ

Gallery:

12►

Download: Philips NMS-1515 (D6450) Gears STL (108)

I received the Atari 2600 “Dark Vader” version for repair.

The problem was a black screen and since it had happened several times before i was sure the 6504 CPU was dead but in this case is the TIA dead.

I also made a composite video mod by removing the RF modulator and a couple of components. I used a 3.5mm female jack as the audio/video output, which is less invasive than two female RCA.

Gallery:

Andrea Ottaviani (aotta) has released a couple of firmware updates for the Flash Multicarts based on the Pico Clone (Purple)

PiRTO II (Intellivision flash multicart)

Changelog:

• v1.04: Bug fixed Missile Dominatino (added support for both RAM8 and RAM16)

PiCOLECO (Colecovision flash multicart)

Changelog:

• v1.0c: Fixed sprite bug in Pac-Man Compilation, porting to SDK 2.2 in progress.

PicoPAC (Videopac/Odyssey 2 flash multicart)

Changelog:

• v.1.0b: Fixed KTAA final rom.

Download:

• PiRTO II (Intellivision flash multicart) v1.04 (146)
• PiCOLECO (Colecovision flash multicart) v1.0c (120)
• PicoPAC (Videopac/Odyssey 2 flash multicart) v1.0b (118)

source: https://github.com/aotta

NEW TAG: C64 BIG GAME PACK

Some new games or tools (Cracked / Trained or Unrealeased) for Commodore 64 have been released from your favorites groups.

Titles:

• Space Invaders 2 +
• Mad Moggy +3
• Krakout Yellow Banana
• Box 512 +1HD (Excess, Hokuto Force)
• Space Invaders 2
• Nigel Mansell’s World Championship Preview
• TantooMan – Volume One V1.1 +4D
• Mad Moggy V1.2 +3FD
• Lords of Conquest
• G.I. Joe
• Stop the Express +3DGHM
• Terra Cresta +5HD
• Iowa Jack and the Crystals of Chaos V1.5
• Hipstercade +1D
• Bal8tro +2FD
• Car-Race +4DTH
• Stickler +
• Stickler
• 3Tower +D
• 3Tower +
• Black Tower Preview
• Nero 2000 [finnish]
• Wild West
• Desperados
• Tin Star
• Iowa Jack and the Crystals of Chaos V1.6
• KWIK-Ware! Collection V1.1
• SDL-Connex +D
• Lock’n'Chase V1.1 +3D
• Robo Gems Preview (Hokuto Force)
• Housepaint BASIC
• Veritas – The Roman Investigation
• Veritas – The Roman Investigation Preview
• Yet Another Simple Memory +
• Law of the West [english/polish]
• NER-Type +1T [english/hungarian]
• NER-Type [hungarian]
• The Bod Squad +10DFH
• Aqualique X Preview +1D
• Czołgi Party
• Mali izziv [slovene]
• Czołgi Boom!Party 2025 Special Edition
• Osiris Demons Preview +1G (Hokuto Force)
• Snake Preview +2HD (Excess, Hokuto Force)
• Snake V1.0 +2HD (Excess, Hokuto Force)
• Czołgi Boom!Party 2025 Special Edition +1F
• Micro Karate Champ – Nordlicht 25 Preview +D (Hokuto Force)
• The Mystic Zone [hungarian]
• H.E.R.O. Is Back +1D (Excess, Hokuto Force)
• Bitmap Pixies
• Fuego +3D (Excess, Hokuto Force)
• H.E.R.O. Is Back +8D
• Bitmap Pixies Preview +
• The Addams Family +3DH (EasyFlash)
• Florida Man Saves The World +1D
• Patacaisse Preview
• Snake vs Bomb 2 – Canyon Chaos V1.2 +4D
• MiniMIKE Preview 5 +3D
• Danger Dennis Preview +4D
• Musketeer Preview +2D
• Ant Invasion +3D
• Danger Dennis Preview 2 +4D
• Danger Dennis Preview 3 +3 (Excess, Hokuto Force)
• Harbour Attack +6DGHM
• Beanstalk +4D
• Beer Rescue
• Beer Rescue +1D (Excess, Hokuto Force)
• Wordy +1D (Excess, Hokuto Force)
• Anonimus +5DGPTF
• Beer Rescue +2
• Beer Rescue +4HF
• Svellas +2D (Excess, Hokuto Force)
• Grid Preview +DG (Hokuto Force)
• Caprica Defense +3D
• Anonimus +5DGPF [dutch]
• Let’s Invade 3 +8CD
• Grid V2.0 +2D [cc65 version]
• Umi Bombs +3 [agpxgm]
• Leer Bridge 1 [dutch]
• Impossamole +12HDGF
• Flanes +2D
• Wrestling Manager +1D (Excess, Hokuto Force)
• Franco Baresi Kick Off Series [english]
• Umi Bombs +4 [agpxgm]
• Microprose Soccer Series
• Svellas +4HD
• Hades +9DGH
• Indiana Jones and the Last Crusade – The Graphic Adventure Preview +DS
• Lock’n'Chase V1.1 +3D
• The SEUCK Camp +F
• Grid V2.0 +2D [oscar64 version]
• Attack of the Mutant Camels +6DGHM 100%
• Four or More +
• H.E.R.O. Is Back V1.1 +9D
• Stormlord +6DFHS
• Pharaoh – Extended Version
• Falling To Pieces
• Tempus Fugit – The Past is Yet Unwritten
• Florida Man Saves The World V1.01 +2D
• Impossamole +12HDGF (v2)
• Bundesliga Manager 2025/2026 +3G [german]
• The Tribe + (Excess, Hokuto Force)
• The Tribe +3D
• The Tribe + (V2) (Excess, Hokuto Force)
• Gianna Sisters Patch with new scroller
• Cutre Preview +DG (Hokuto Force)

Download: All Games in One Archive (475)

source: csdb.dk

I modified the original Atari design to have all the components needed for printing on a single plate, having a multicolor printer, it seemed absurd to print all the components separately and then glue or fit them together.
 
I made the two Texas Instruments TI-99/4A and MOS 6581 lightboxes myself.

Below you will find the downloadable archive containing all the lightboxes.

Gallery:

Download: Atari - Commodore - TI99/4A - MOS 6581 LightBox (260)

Atari Logo Lightbox : https://www.printables.com/model/916994-atari-logo-lightbox-led-lamp
Commodore Logo Lightbox: https://www.printables.com/model/633750-commodore-logo-lightbox