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…

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…

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…

Project: GPS2 Click with the PIC Clicker

I’m working on a GPS-based WWVB simulator and I’m pretty close to finished. I wanted to share up to the point where I add on the WWVB circuits and have it stripped down to just the PIC development board and GPS module. This is on a Mikrelektronika PIC Clicker 18F47J53 development board and a QUECTEL…

PIC-based Dumb Terminal

Okay before you start; I know.. I know.. Because I’m shooting for a VT-100-ish emulation my project is technically an “intelligent” terminal but not in a sense that it runs an embedded OS/IP-based, but in the sense that it decodes ANSI ESC codes.. it’s still a freakn’ dumb terminal in my book. I’m just about…

Analog Stepper Gauge Friday night fun

Took a while to clear off the bench tonight. I got a little happy with the ORDER button last week through weekend. I’ve filled two more parts storage containers and luckily one of my new packages with another parts storage container from Amazon; I couldn’t find any locally, I hope they’re still making them. The…

PIC 18F26K22 PWM+A/D with MOSFET, the start of an eScooter?

I’m considering building an electric scooter; considering it probably putting it lightly.. I have almost everything I need for it.  Interested? Why type so much when you can just watch my proof of concept! If you’re following along and want to use the same hardware (warning totally untested… ): Controller found on the TAUTC Tindie…

A tiny Si4707 WX Radio Project Update

I pulled out the weather radio project today to see what I could get done in a few hours. I was pretty close on finishing off the hardware but I fell a little short right at the end. I found I had forgotten to buy something to convert the regulated 5V to 3.3V for the…

An evening of measuring inductance

I was inspired by Alan Wolke’s ( @W2AEW ) video on measuring capacitors and inductors with an oscilloscope. I tried it out and it works pretty reasonably; yeah why wouldn’t it? Anyhow, if you can do it on an oscilloscope it can be done by a microcontroller right?  I have been trying to keep myself from…

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