Re-Post: iButtonLink T-Sense 1-wire sensor (Maxim DS18B20) + PIC 18F14K22

Using a PIC Microcontroller to pull temperature of iButtonLink T-sense sensor. I pulled this off the wayback machine because I lost this post in the great database loss of how ever many years ago. I’m re-posting because I’m working on an expanded version of this with an Arduino dev board and wanted a reminder of…

eBay Mini-vacuum Pump

Quick version: Hey this little thing works and seems practical for robotics, specifically the Pop Can Challenge. I had to add “mini” to the title of this post, calling this a vacuum pump seems odd when you’ve played around with big pumps. Which leads me to make a mental note to share some information my…

Programming ESC with Arduino

The story: I hit a break wall with ODrive. ODrive is an open source brushless DC motor (BLDC) driver built with robotics in mind (my application..). I don’t have faith in the project and after months of trying to make it fit my application I’m abandoning it. It’s painful to spend that kind of money…

ESP32 Boot Camp

… for me. I got a rando e-mail offering me “free parts” and I usually don’t even bother opening the e-mail. It’s ALWAYS garbage right? Well, maybe I hadn’t slept well the night before but I opened it. (psss. You can scroll down about a page before I actually get anywhere in this post…) What…

MODbus/RTU on a PIC Microcontroller

By request one of my long lost blogs was a MODbus RTU application for a PIC 18F27J53. You could easily plop this onto many of the 18F series micros. It doesn’t do much but it’s a great stepping stone for throwing in your own IO. I’ll probably follow up with an Arduino version in a…

Why you shouldn’t open a makerspace.

Five years ago I had an itch to talk to other people; so overrated. The End. OK, fine.. I originally was thinking of some electronics club but after talking with a few people and refining my ideas through research, it was clear this idea fit best as a makerspace. I bought a meetup.com subscription. For…

WWVB signal generated from GPS

I sat at the bench this morning waiting for the inspiration to continue on with a project I’m working on with Francesco; I gave in to procrastination. I wrote some¬†assembler code to generate WWVB signal from a PIC a few months ago, remember? That stirred some interest from overseas folks looking for a way for…

GPS on the PIC 18F26K22

I was asked to create a box that notified by LED if you were too far off a N/S or E/W course. I failed, I doubted the specified GPS accuracy/drift as my Garmin seems to stay pretty steady.. perhaps that’s some integration in the processing? I started with one of the 18F26K22 TAUTIC development boards…

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