SD81 Booster
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billloguidice
- Posts: 4
- Joined: Thu Jul 06, 2023 2:52 pm
Re: SD81 Booster
That's fantastic. If this is ever for sale, I'm definitely interested.
Re: SD81 Booster
Pretty cool - needs a better case though!
Zeddy: ZX80, ZX81/ZXpand, TS1000/ZXpand, TS1500/Zxpand+,Printer
Speccy: 48k, +, +2, +3, TS2068, "Bare Metal" Pi, Next KS2, IF1/Microdrives/Vdrive/Light Gun/VGA-Joy
QL: Minerva/QL-VGA/Custom PSU
C5: 24v, LiFE battery, Disc brakes
Speccy: 48k, +, +2, +3, TS2068, "Bare Metal" Pi, Next KS2, IF1/Microdrives/Vdrive/Light Gun/VGA-Joy
QL: Minerva/QL-VGA/Custom PSU
C5: 24v, LiFE battery, Disc brakes
Re: SD81 Booster
Probably I will make a small initial batch.billloguidice wrote: ↑Tue Jul 11, 2023 11:11 pm That's fantastic. If this is ever for sale, I'm definitely interested.
I will inform you about it.....
Re: SD81 Booster
This is a very interesting project! Thanks for making it opensource 
. I have a friend who has his own hobby fab shop. I may have him order a pcb when he orders some boards for a system he's developing. He also has surface mount soldering tools, laser cutter and 3D printers so I'm sure I can get one up and running. Will you have some CPLDs programmed for sale? And will you ship to the US?
. I have a friend who has his own hobby fab shop. I may have him order a pcb when he orders some boards for a system he's developing. He also has surface mount soldering tools, laser cutter and 3D printers so I'm sure I can get one up and running. Will you have some CPLDs programmed for sale? And will you ship to the US?2X Timex Sinclair 1000, ZX81, ZX80Core, 5X 16K Ram Pack, ZXBlast, ZX P file to Ear Input Signal Converter, Elf II
Re: SD81 Booster
From what I read in the repository, you just connect the PCB to your PC via USB, and use the free Arduino software to upload a sketch to the ATMEGA controller. The software detects a firmware on the SD card, and updates the CPLD with it.
Re: SD81 Booster
This is correct.
You can program the CPLD copying the XSVF file to the root of the SD card.
You can program the CPLD copying the XSVF file to the root of the SD card.
Re: SD81 Booster
Thanks for the info. I didn't read the technical document far enough 
2X Timex Sinclair 1000, ZX81, ZX80Core, 5X 16K Ram Pack, ZXBlast, ZX P file to Ear Input Signal Converter, Elf II
Re: SD81 Booster
I guess the SMD CPLD will keep many (at least me) from making one.
It would be great if PCBs with SMD populated could be bought somewhere.
It would be great if PCBs with SMD populated could be bought somewhere.
In theory, there is no difference between theory and practice. But, in practice, there is.
Re: SD81 Booster
I'm organizing a batch of fully assembled interfaces (see first post)
On the other hand, what you're saying seems like a good idea to me, I'm going to offer the possibility of buying the board with the CPLD and the 3v3 regulator soldered.
Edited: I have added the possibility in the first post.
Re: SD81 Booster
I did buy a €100 mini hot plate (3x3cm) on AliExpress. Now I can easily solder SOIC and TSSOP ICs. That was a great investment for me.