[sdiy-market] [FOR SALE] Development boards: EPROM, audio amp, USB, CPLD (UK but will ship)

[Steve Lenham]

Hi,

Read on for the next set of stuff off the top of the pile looking for a 
new home! Today: development boards.

Postage at cost to wherever you are. Payment by bank transfer or Wise 
preferred - can also take PayPal but with a surcharge to cover their 
ridiculous fees. If you think my pricing is wrong or would like to buy 
multiple items, get in touch!

Thanks for looking. Happy to answer any questions. More to come!

Cheers,

Steve L.
Benden Technology

1. Willem EPROM programmer (previously posted but unsold - price 
reduced) - asking GBP20.

The Willem programmer was an open-source DIY design that enjoyed many 
iterations and still forms the basis of a lot of the cheap Far Eastern 
programmers. This one was built by my own fair hand using a commercial 
PCB (version 3.1 ATH, if you are Googling) and I used it for many years 
before upgrading. Plenty of information is still available online 
including the driver software.

Settings are made manually using jumpers and DIP switches, which means 
you need to be careful but also makes it a very versatile device, 
capable of programming all sorts of things (EPROM, EEPROM, FLASH, 
micros, etc.). Communication with the host PC is via the old-school 
parallel port (and it needs to be a "real" one).

This one comes with a couple of adaptors that are particularly useful 
for vintage synths:

- Adaptor for 2716 and 2732 EPROMs. The Willem handles larger EPROMs 
directly but needs a pin adaptor for these. This is what I used most.

- Adaptor for reading and writing Intel MCS-48 microcontrollers. This 
will read mask-ROM 8048/49s as found in a lot of early Roland synths and 
program the EPROM equivalents (8748/49).

Willem programmer

Overall, a very useful device if you are willing to get a bit "hands-on" 
- which hopefully everyone here is :-)

2. Tripath EB-TA2020 evaluation board for TA2020 2x20W Class-T amplifier 
- asking GBP15.

Tripath were one of the pioneers of switching audio amplifiers and made 
some very nice-sounding devices before, I believe, going bust! This is 
an evaluation board for their then-popular TA2020 device and can 
effectively be viewed as a small (10cm x 6cm) stereo amplifier module 
delivering 20W/channel into 4 ohms from a 13.5V supply. Input is via 
phono connectors and there are banana sockets for power and outputs. 
Comes with datasheets for device and board. This was briefly used for 
evaluation then stowed away.

3. DLP-245PB USB/PIC microcontroller development module - asking GBP10.

This is a little plug-in (DIL) module containing a PIC16F877 micro and 
an FTDI FT245 USB interface, i.e. everything required to implement a 
basic piece of USB hardware. The manufacturers (DLP Design) provide USB 
drivers and example code, so it is a really easy way in to USB. Not sure 
if I ever actually used this - don't remember doing so, so it is 
basically untouched :-)

See https://www.dlpdesign.com/usb/245pb.shtml for more details.


4. Elektor Altera MAX CPLD programmer/development board plus parallel 
JTAG interface - asking GBP20.

This is a development board for the Altera MAX7000 family of CPLDs, 
specifically the EPM7128. It was published in Elektor magazine back in 
2004 alongside a multipart tutorial in the subject and I built one 
carefully using one of their PCBs before doing precisely nothing with 
it. It has never even been powered up. Comes with a matching Elektor 
parallel port JTAG interface, but there is no reason why a more modern 
USB JTAG port (not supplied) couldn't be used.

I can supply copies of the Elektor build info and tutorials if desired. 
Programming software was Altera's Quartus suite - I don't think I have 
it on file, but it's probably out there on the Web somewhere.
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