Mar 232015
 

Epaper display

Worked a bit on my fpga code. didn’t make any real headway.

Pcb printer

Worked on my name plate for my member storage at the shop. I will print it on the printer and dye it like this instructables link says to. I also plan to try using the laser to drill holes like this describes also instructables.

Cleaver

Designed a soldering station driver for hakko 907 compatible soldering irons and powered by my laptop power supply

What I watched this week

Goals

  • 40 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Drove to mobile
  • Went to retro game night at mobile makerspace. I owned at frogger.
  • Found and bought this drok dc-dc converter buck regulator to build a portable variable current limited power supply. exciting. Still have to figure out a good way to keep it cool.
  • got my usbarmory in the mail. I forgot to bring my charger with me to work on tuesday. So I just installed xrdp and xfce on to the little guy and plugged it into the windows machine. setup internet connection sharing. and I was good to work all day. It is a very cool device.
  • worked on my back door lock. I think I got it so this will reliably trigger the lock/unlock trigger.
  • Drove back from mobile.
  • Had great idea for my instant messaging system. What if we used the phone as a document store! genius.
Mar 192015
 

Epaper display

Worked on misoc this week. And got forked by someone also interested in porting it to my dev board. Played around with misoc and migen bits for a bit to better understand how the c code meshes with the generated fpga code.

Pcb printer

Tim soldered the spam board we printed. Tyler verified his snaps worked on his board that I printed. Monday I worked on ceiling the leaks in my acrylic bubbler chamber for several hours I am pretty close to cleaning it up. I ordered a heater off of ebay for 20 dollars it will heat from 30c-60c. I also purchased a stronger bubbler to agitate the solution better. Also on ebay I found a seller for scrap pcb copper, and got some. looks good. I built my bubbler after struggling many times to get the box to be water proof.

Spam

Tim soldered half of a spam board I printed at the shop, but got busy and left. Don’t know how functional it would have been. But at least the task seemed very doable with the board.

Goals

  • 41 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Started watching unbreakable kimmy schmidt, its pretty funny.
  • Dropped and picked up lotus from preschool.
  • Celebrated mathias birthday and went to saint patrick’s day.
  • Bought a cheap schlage door lock for my back door. It turns out it was broken. But it also looks like it will be fixable just need to hack on it some more.
  • Got my odb2 reader in the mail. I was able to clear the gas cap warning on my car. I also took it over to Raymond’s car and showed him what his warning was as well. What is nifty about it is my car doesn’t ever turn power off to the odb2 port, so the bluetooth radio is always on now. Something I could use to detect to see if the car is in the driveway or not. More to come.
Mar 102015
 

Epaper display

Worked on misoc this week. And got forked by someone also interested in porting it to my dev board.

Pcb printer

pcb printer worked successfully! I etched my first pcb. I then spent sometime and wrote a bash script that modifies our pcb geda files to make the board etches more reliable.

For giggles I tried to reverse engineer the cartridge drm chip. The 1.7 volt pin seems to be a clock at 1 mhz and the far 3.3v pin seems to be the data pin. I haven’t figured out anything more than that yet.

I spent a lot of time researching different etching processes and settled on making a bubbler container for my muriatic acid solution.

What I watched this week

Goals

  • 42 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • discovered fake infomercials from adult swim. Just wow. all of them wow
  • went to public night at the shop
Feb 242015
 

Epaper display

Working on fpga dev board. I have had nothing but problems with migen and misoc. I still can’t get my code to run. I am hoping to figure it out in the coming week.

Pcb printer

I am porting his microcontroller code to small dev board I bought on amazon. It was a success. I got the olimex tiny85 dev board. Soldered it up. Broke the usb header. Realized how much I missed tim… Decided to hell with the usb connector. I was just going to use my buspirate on it. Realized I left my buspirate in Huntsville. To hell with it I will just use my leonardo clone i keep in my bag. Nope huntsville too… I was frustrated then I remembered I used an arduino in my tardis project. I took it out and was able to get arduinoisp sketch on it. I then programmed the dev board or tried to for ten minutes. I realized the olimex t85 board has a reset test point that is disconnected from the reset pin. I just connected my isp directly to the reset pin and everything worked perfect. I can’t wait to test it on the printer.

What I watched this week

Goals

  • 43 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Road bus to mobile.
    • Helped senile old man make it to houston.
  • Got second place in trivia at mellow mushroom.
  • Stopped by Mobile Makerspace and did some soldering.
  • Visited my sister at her work.
  • Spent way to much time looking at repraps. I really want one but as I always say “you don’t read!” Reprap mendel90 Prusa i3 Wilson Ultimaker all seem like interesting options. Although I think the wilson is a clear winner.
  • Researched making a garment printer for the shop.
  • Drove back to Huntsville.
  • Started looking at ev conversion kit.
Feb 242015
 

68k apocalypse

Modified my color classic as a mystic. Powered it up and was succesful. It was awesome. Then I put the back of the chasis back on and i think I damamged the crt or the analog board. Not sure which. but it just makes a horrible noise when I try to power it up ): I will try to look at it sometime soon but for now I am just defeated.

Epaper display

I succesfully got migen and misoc building for my board. I haven’t been able to verify their operation via uart or flipping leds. But I am very close I think. I also fixed boards for next run of production.

Pcb printer

I spent about 10 hours or so and built myself a pcb printer from an e260d. I followed this guide. It was very helpful. Right before I left for mobile in the wee hours of morning I succesfully printed on a sheet of aluminum. I thinki I am just having a problem with timing the way the different sensors talk to each other.

What I watched this week

Goals

  • 44 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Public night at shop
  • Mac night at shop
  • Quick trip to unclaimed baggage
  • Cheap chinese food for chinese new year
Feb 242015
 

68k apocalypse

recieved in the mail my color classic and cdrom drive. lc575 motherboard to come next week.

Epaper display

Successfully generated -22v and +20v from our circuit as wel as having close to correct amp draw. seems our mistake is over. I started researching other pcb options given chinese new year is right around the corner.

What I watched this week

Goals

  • 45 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • found out about discorunner it is a basic interpretter compatible with even the oldest versions of basic.
Feb 042015
 

68k apocalypse

Matt made me this super cool model. Dusty printed it and it looks awesome. I should have my color classic, lc575 motherboard, and apple cdrom drive in the mail next week! I also snagged a copy of a/ux to run on it. So I should be tribooting between macos, a/ux, and debian.

Epaper display

Tim and I have a working board. Well I think we do. Electrically. It doesn’t seem to produce power at voltages I need, but I think it is because I am not driving voltage to it the right way. It turns out I was driving it wrong. I was able to get +22v and +15v out of our chip. Something is wrong with the feedback loop though and the negative voltages are wrong. Hopefully tim and I will bread board one for next week and move from there. I also started porting lm32 core to minispartan6. And by that I mean spent 10 hours getting their propietary garbage software going. Although once I get verilog generated from it, I shouldn’t need to touch it again.

What I watched this week

Goals

  • 46 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Public night
  • Play date for kids
  • Codeathon at shop on saturday

Feb 042015
 

68k apocalypse

Bought a lc575 motherboard. ethernet card. and researched some parts. Talked to matt about getting model printed.

Epaper display

Got circuit board somewhat built… nothing to test yet. Spent more time playing with verilog and learning. Also spotted a problem in the pcb and fixed it so the next version won’t be a problem.

Spam

Tim discovered issue in the pcb. Turns out our resistor ladder won’t work for jack detection. It will probably be better to allow for the floating ground. Otherwise the board works, including the led. Mounting holes are great too.

What I watched this week

Goals

  • 47 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Public night
  • Hackathon
  • Someone wrecked into me in a mcdonalds parking lot.
  • Got back on the wagon with diet.
  • Finished tv show parenthood. yay.

Jan 202015
 

68k apocalypse

Bidding on a lot in Tennessee for pick up. Figured out all the upgrades I would make to my color classic should I get one. Lost auction in last 4 seconds. lame. Started work on my wifi-serial adapter. Matt is going to model a modem case for me and I will move on from there.

Epaper display

Worked on buildsystem. I can now arbitrarily add more vhd files or change name of project with minimal changes. Built a test bench, completed ucf file for minispartan6. Fixed makefile common for revision tags. Learned more about how verilog works. Also made pretty schematics from the verilog code.

What I watched this week

Goals

  • 48 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Monday night trivia
  • Mexican for dinner with sister
  • learned about driving a mac screen with fpga macMonitor
  • found some nifty scripts for pcb, perl4pcb, from david rowe
  • Learned a bit about building test bench code for icarus and gtkwave.
  • Came back from mobile.
  • got to under 100 in my podcast backlog.
  • Celebrated Heather’s birthday
  • My boards shipped
  • destroyed diet in mobile. time to start again.

Jan 202015
 

68k apocalypse

I found a better way to do ppp over serial, tcpser . I found a great ebay auction and am waiting on it. I also found a treasure trove of old software for these machines. Grabbed it all and can’t wait to try it out.

Touch

Tried running motor on the btle device worked well.

Epaper display

I worked on fpga code. and better understand the build process for the vhdl code I am using. I also ran my devboard as a pass through hdmi device. My goal for the following week is to get hdmi input working in my build system and flip an led based on a pixel value.

What I watched this week

Goals

  • 49 posts to go
  • 15 chapters to go in mit
  • Days successful with schedule: 0

Miscellaneous

  • Public night at shop
  • Meeting at the shop
  • Printed a pdp8 switch cap
  • Took lotus to the toy store
  • Drove to mobile.
  • Started cleaning my box up at the shop.