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Update: June 6th, 2017
Log from AAGriculture (Automated Aquaponic Garden)
So I keep coming back to this project because it's still a dream of mine to have a business (I'd settle for side hustle) of selling hydroponic produce, but not having a background in development among other distractions had been getting me down. Also...

Design
Log from Modern Herb Garden
The garden is a two-part experiment:The upper tank is an ebb-and-flow grow bed which fills and empties on a regular schedule.The lower tank is a reservoir and aeroponics grow bed, using ultrasonic misters to create a high humidity environment for the...

Grow Update & Controller Problems
Log from Modern Herb Garden
Well despite the lack of proper automation (my controller is currently out of action while I fix the water level sensor problems), there has been good growth!Unfortunately my plants have been showing some nutrient deficiency problems, such as yellowing...

Functional block diagram
Log from UltraTower
Microcontroller:The chosen microcontroller is an ESP32 because: The high frequency generation is simple Bluetooth and WiFi (to communicate with a phone or send data over the internet) Low power consumption Capacitive touch GPIO (water...

Applications
Log from UltraTower
UltraTower is a low cost ultraponic system under 100€ with parts that can be easily found in shops. Thus this technology can have several uses:On a balcony:Cities are getting bigger and bigger and have a garden to grow your own vegetables can...

Functional block diagram
Log from UltraTower 2023
Microcontroller: The chosen microcontroller is an ESP32 because: The high frequency generation is simple Bluetooth and WiFi (to communicate with a phone or send data over the internet) Low power consumption Capacitive touch GPIO...

Applications
Log from UltraTower 2023
UltraTower is a low cost ultraponic system under 100€ with parts that can be easily found in shops. Thus this technology can have several uses: On a balcony: Cities are getting bigger and bigger and have a garden to grow your own vegetables can...

Squeezing the code because 85 bytes is too many...
Log from Joy232
I have started to squeeze the hook code. This can be done by merging the start, stop and data bits into a 16 bit register and use the same loop to transmit all the bits from the RS232 character (i.e. 10 bits). It also has a positive side effect that...

Micro-coded controller deep-dive
Log from Custom circuit testing using Intel HEX files
In this project, instead of using a standard embedded processor and programming it to execute 3 tasks at hand (parsing HEX character stream, generating HEX character stream, and writing character stream to video RAM driving VGA), I created 3 independent...

Different SD card MBR formats
Log from OSI SD Card Operating System (OSISDOS)
I tried a couple of other cards and found that they have different MBR formats with no header. I noted this in a previous log. There's an offset at 0x01BE that points to the MBR. My theory is this is true for "bigger" cards. I think the reason I could...

Will it work on an 8080/8085?
Log from eForth/z80 modifications
One of my motivations is to also get it to work on my 8085 SBC. It turns out to be fairly straightforward. I have a hacked asz80 that flags instructions that are not in the 8080 subset. Here is the output of a grep '^[a-z]' efz80.lst a 0105 ED 79 [12]...

Nutrient Solution Maintenance and the Reservoir Revisited
Log from Hydroponic Garden Control with IUT
I have been working on the instrument assembly that would be partially submerged in the nutrient solution sump tank; both from a reservoir refill perspective as well as a nutrient replenishment standpoint (compensating for evaporation and rain-fill)....

New fertilizer, pH meter disassembly, LED drivers
Log from GrowInBox
Hi!I have a lot of school work to do this week, but I decided that some thing just need to happen today or as soon as possible. So I bought a new fertilizer.The old one - plant food - TNT Complex from hesi has a NPK of 323 which is ok for the vegetative...

AC Servo buying for test
Log from Open Source Cinema Robot
2020.3.20 // AC Servo buying for test update.As I was modeling, I was trying to figure out which motor would fit my robot, and I decided that AC servo motors were suitable, and I found a servo motor store in 'Aliexpress', a Chinese shopping mall that...

Board NEDONAND-6
Log from NEDONAND homebrew computer
NEDONAND-6 is 8 multiplexers 2:1 with common control (straight select and inverted select):Board already ordered through OSHPark:Pins description:1.1) GND - ground 1.2) O0 - output of multiplexer 0 1.3) O1 - output of multiplexer 1 1.4) O2 - output of...

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