View allAll Photos Tagged Microprocessors
Build photos from the Stepper Motor Driver v1.2. This is a new, improved board that has a better layout, better connectors, and is slightly cheaper.
More info at: make.rrrf.org/smd-1.2
Please take a look at www.retrocomputers.eu for more info about my retro computers. You will find loads more stuff relating to old computers like the one above.
My little evening run out on Tuesday 13th March 2018 was a trip down the Pathankot - Amritsar line involving two Ludhiana WDM3A wrecks, 16662 and 16099. Here the former smokes it up leaving Gurdaspur with train(s) 18102/18310, the 14:20 Jammu Tawi - Sambalpur/Tatanagar "Muri" Express(es).
16662 was a bit odd sounding (although good): hunting (rythmic rise and fall of the engine rpm, usually at idle) a lot for a rebuilt example and violently in the first couple of notches, accompanied with clouds of black smoke. In fact, it was very much like one of the old E-Type controlled engines and not like a microprocessor fitted one - characterful might be an apt description.
16099 sounded quite similar and also smoked like hell in the lower notches, before the turbo got fully spooled up. Although it was comparitively disappointing, however I can't decide if it was the loco or the driver or both who where at fault.
Other workings for Tuesday 13/03/2018:
11131 (VTA WDM3D) 19415/19416
16396 (TKD WDM3A) 04401 (170 late)
14775 (SPJ WDG3A) 18101 (150 late)
16099 (LDH WDM3A) 22429
16304 (LDH WDM3A) 54616
15514 (TKD WDP3A) 14036 (assumed)
225 (PTK ZDM4A) 52461
Trying out extension tubes to do some macro shots of some knackered RAM that I had to remove from my PC.
A while back, I spilled a glass of water all over Gimli, my 17" Powerbook. Today I finally got around to salvaging the hard drive out of it, and low and behold, there's some pretty fried chips.
New Crucial 64GB 6gbps SSD based on Marvell controller. I got this drive to replace a database drive which I was previously hosting on a sandforce SSD (which corrupted my data, yay). I suppose switching to a new drive is an even bigger risk, but I think I'll set up some good backups :)
(Yes, of course I have to take it apart and take pictures before using it)
The SID-SHIELD is a prototype board developed by A Fox Consulting & Design to allow an Arduino-based system to utilize the MOS Technologies 6581/8580 SID chips. It is shown here mounted on an Arduino Uno board.
It uses a MCP23017 I2C 16-bit I/O expander to drive the SID chip's address and data lines and a MC34119 1/4 watt audio amplifier to drive a speaker.
The board uses only 4 of the Arduino's I/O lines: two for the I2C communications, and digital pins 8 and 9 for ~WR and clock signals.
It is strongly recommended that only a 9V DC power supply is used to power the Arduino when using the SID-SHIELD.