Now that we were getting out of the concept realm and into the real world tangible stuff, my anxieties began to relieve a bit. It was time to take some measurements ! I rolled over to the nearest bus stop, and took out my midnight measuring tape...
The big hacker day was upon us and the gears were in motion! Julia jumped into action during morning solo hacker time. She went to the Mission Fabric Outlet store to find our throne-worthy textiles, as well as coordinating with a participant...
Julia and I rushed over to TAP plastics, hoping to get our acrylic sheet before closing. On the car ride over, I opened my CD case and asked Julia, "is there any music thatyou'd like to hear?" "You just have old people music, right?'" she said. She wasn't...
Once we got back to my apartment, the fatigue began to set in. It had been a long day already, with nonstop running around. I asked Julia if she could wait for a few minutes while I rested. She was totally understanding and didn't give me...
The serial port pin-out is cunning designed so that you can connect to a PC with a simple modem cable, or daisy-chained with other TTi devices. 1 Power to optional PC-02 2 TXD Transmitted data from instrument to PC 3 RXD Received data to instrument from...
The serial port command set is not the same as the GPIB command set.Automated Test Equipment will have to parse ASCII command/response strings to extract the data.
I had this thought... I'd have cameras facing down on a flower/compost bed. Things would grow and the camera/ML model would know what grew (leaf design) then push notify your phone. That could be cool.This setup allows you to do cool timelapses.
The first step, after wiping-off the accumulated grime and surface corrosion, was to assess what I have. Within the very large - and very heavy! - case were four cards - an MZB-3 CPU card, a VDU-2K (composite video only) 'graphics' card, an FDC-1 Floppy...
As I randomly slid cards in and out, trying various combinations, I suddenly noticed something. The random characters on screen didn't look so random! More in-and-out card-swapping, trying them in different slots, and power-cycles... hey, those aren't...
I got this idea based off of a research paper a friend showed me and decided to go full prototyping mode with it!So let's say we have two tapes right, E is our tape with magnets on it, which is slightly longer than D (which has hall sensors). They are...
The current version of the OSPi hardware can be found at https://github.com/OpenSprinkler/OpenSprinkler-Hardware/tree/master/OSPi/1.52. I don't need the analog inputs. So my simulation circuit is just a 74HC595 connected to the raspi as in the schematic...
Yes.As I use Debian bookworm with kernel 6.1 I can control the GPIOs without using WiringPi (which as I understand is used by OSPi). I wrote a short python script to blink LEDs on GPIO 16 and 20. These GPIOs are not used by OSPi by default. As I understand...
Yes. Again a small program (sensor-test.py) and corresponding programming of OpenSprinkler shows: it works! (From now on, as I directly connected the GPIOs, I did not use any pull-ups anymore.)
There was no big surprise. I wrote another short test program (mqtt-test.py) to subscribe to one of my moisture sensors. They simply provide an unsigned integer value. I merely have to get this value and define a threshold below which the soil is sufficiently...
Since I now can provide moisture sensor values via MQTT to OSPi, it's time to order a board and the other necessary hardware. As I understand, there are plans to integrate MQTT subscriptions into the OpenSprinkler firmware. I hope that this will...