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<p>Hi,</p>
<p>Read on for the next set of stuff off the top of the pile looking
for a new home! Today: development boards.<br>
</p>
<p>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!<br>
</p>
<p>Thanks for looking. Happy to answer any questions. More to come!<br>
</p>
<p>Cheers,</p>
Steve L.<br>
Benden Technology
<p>1. Willem EPROM programmer (previously posted but unsold - price
reduced) - asking GBP20.<br>
</p>
<p>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.</p>
<p>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).</p>
<p>This one comes with a couple of adaptors that are particularly
useful for vintage synths:</p>
<p>- 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.</p>
<p>- 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).</p>
<p><img src="cid:part1.IPGxkl0P.9mw4ToAp@bendentech.co.uk"
alt="Willem programmer" width="935" height="561"></p>
<p>Overall, a very useful device if you are willing to get a bit
"hands-on" - which hopefully everyone here is :-)<br>
</p>
<p>2. Tripath EB-TA2020 evaluation board for TA2020 2x20W Class-T
amplifier - asking GBP15.<br>
</p>
<p>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.<br>
</p>
<img src="cid:part2.IqxNEVyM.hZeyhgHn@bendentech.co.uk"
moz-do-not-send="false">
<p>3. DLP-245PB USB/PIC microcontroller development module - asking
GBP10.</p>
<p>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 :-)</p>
<p>See <a class="moz-txt-link-freetext" href="https://www.dlpdesign.com/usb/245pb.shtml">https://www.dlpdesign.com/usb/245pb.shtml</a> for more details.</p>
<img src="cid:part3.LqKiJYZ1.tHp2XwCm@bendentech.co.uk"
moz-do-not-send="false">
<p><br>
4. Elektor Altera MAX CPLD programmer/development board plus
parallel JTAG interface - asking GBP20.<br>
</p>
<p>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.</p>
<p>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.</p>
<img src="cid:part4.gkr04LQ0.ZdIBhBZN@bendentech.co.uk"
moz-do-not-send="false">
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