i had multiple milestones yesterday. some enormous ones lost me in the future. in the numbness of the present, all i could think about was teachers that taught and helped me learn. i think i was escaping reality, redirecting my mind from the fact that i received a shipment full of v2 boards sitting on my desk and it meant the dream part is over aa with kernel and software loaded running
the last two weeks of the year normally sets the trends for my next year. my new year generally starts just before xmas which means my focus is renewed and runs deep during the holidaze. this results in numerous all nighters and traditionally i have always designed something new and picked up a new technical skill during this heightened moments. this time around i seem to be picking up on influxdb for timed series analysis and more kernel internals. i was messing around with our new v2 controllers and influxdb at the office when i could not take it anymore. […]
Kijani Grows is an aquaponics company so one may expect to learn aquaponics farming through an internship with them. However, though the success of the farms is the ultimate goal of the work, you will actually learn or draw upon a breadth of knowledge that goes far beyond farming. A lot must be done to have functioning gardens that collect and report data through their sensors. The microcomputers are made and programmed to run the sensors, the sensors are soldered to gain the proper connections to the computers, the programs are made to run the pumps and lights, and the […]
we ran into production related challenges and had to reconsider numerous scenarios. we pivoted some and our new v2 smart controllers boards are just about ready. v2 comes with inbuilt linux microcomputer controlling an atmega2560 microcontroller, 20+ digital sensors, 10 analogue, 3 uarts, i2c, 12 relay controls, wifi, eth, mini sd-card, usb(video, audio, cellular), watchdogs, arduino compatible, etc.
shellshock is frightening. it does not affect any of the current releases.
Our smart controllers were running a version of openssl that was affected by the heartbleed bug consider ‘the biggest security vulnerability of all time’ as an attacker can remotely connect and steal encryption keys or data from processes in memory. Our production and development servers were not affected as they run older versions of openssl. However the earlier v1.1 and new v1.3 smart controllers were running a vulnerable version of openssl. It should generally not be an issue as the controllers are probably behind a firewall. To see if your controller was affect, connect to your device using ssh as […]
Jason Axt from Sweet Water Foundation took my DIY class the other day … this was his feedback. In my defense – I had 2 nine year old’s in my classroom as I did among others Kamal Hyder the author of ‘ ‘embedded system design using the rabbit 3000 microprocessor’ - tough range to keep engaged. —— Aquaponics Class Kijani Grows: Eric Maundu American Steel Studios 3.8.2014 10am – 4pm Review: The class itself started with an overview of how the natural ecosystem deals with the water cycle and touched briefly on the nitrogen and carbon cycle without real […]
The year is in full swing and we are back on the guns2garden project with the kids. New kids around this time as all former students are no longer in the school because: some families relocated to other safer neighborhoods, others had to change schools to makeup for lost credits, some just disappeared, pregnancies, I even lost one kid to prison. Castlemont High School in East Oakland is where we run the g2g project. I think the url’s below can speak for themselves. http://www.npr.org/2013/12/13/250734629/for-many-urban-schools-gun-violence-remains-a-daily-reality http://www.mercurynews.com/breaking-news/ci_21603171/fight-at-an-oakland-high-school-causes-police http://www.youtube.com/watch?v=zp_QcMLbj1o http://blog.sfgate.com/cjohnson/2014/01/28/oaklands-youth-uprising-mourns-violent-attacks-on-its-members/ (Youth Uprising shares a common fence with Castlemong High School and funds the kids […]
it is a very humbling experience when anyone comes to me wanting to learn see, i was the naughtiest kid in many blocks, often i got punished for not being like others and sometimes others got punished for being like me. still, what they called naughtiness i consider being creative. for instance, the number of times i got a physical whooping for running tests on how different windows sound different when subjected to different projectiles was say healthy. we were disruptive even then. so, it really is very humbling to have students come to our space. the other fun part […]
only after breaking down one of the sound proofed boxes from the ceiling did we figure what they really were for – to capture stray bullets without making noise. we recycled lots of stuff from the rifle range, the sound proofing materials were used in the school sound studio. one of the reasons we needed to remove the fixtures on the roof was to reduce the possibilities of mould spores incubating due to the moist warm environment expected from the fish tanks and indoor grow lighting. there were 30 pieces weighing about 80 lbs each on the ceiling for deflecting […]