Author Archives: Dan TheMan

WiFi Target Spotting Scope

DISCLAIMER: If you build this device, I take no responsibility for any outcome. Make sure you are sighted-in well enough to be hitting the target everytime and place the equipment in a position to avoided being hit. Lithium batteries are … Continue reading

Posted in c-Misc | Tagged | Leave a comment

Tip o’ the Day: Gaffer Tape instead of Duct Tape

Duct tape is renown for its usefulness.  No argument there – I keep rolls in my vehicles, snowmobiles, ATVs, etc. for emergencies. Interestingly, it sucks for use on actual ducts. I tried that many years ago only to have the … Continue reading

Posted in c-photo | Tagged | Leave a comment

Cleaning Flux from Printed Circuit Boards (PCB)

I got some professional looking PCB boards manufactured for a project recently. The boards look great compared to anything I could do myself. Problem is, after I solder on the components and try to clean the flux off, I’m always … Continue reading

Posted in c-electronics | Tagged | 2 Comments

Automating Testing Using Video

I found myself needing to verify caller ID operation of a couple of troublesome telephone handsets. To properly test, I want to run 1,000 calls to the handsets and verify they decode caller ID every single time. During early testing, … Continue reading

Posted in c-Misc | Tagged | Leave a comment

Migrating Raspberry Pi Version 2 SD card to Raspberry Pi 3 Hardware Platform

My development RPI has been an RPI version 2 since version 2 was first released. Further, everything except the boot files have been moved to a USB-based hard drive to increase performance (using a procedure much like this: https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=44177) I … Continue reading

Posted in c-rpi | Tagged | Leave a comment

Making a Data Only Cable For Teensy/Arduino/Nano

Been working on a complicated teensy project that is going to the other side of the state for testing. So I’ve been building a testing platform that consists of a Raspberry Pi connected to the Teensy via USB. I can … Continue reading

Posted in c-arduino, c-rpi, c-teensy, Uncategorized | Tagged | 1 Comment

Remote Monitoring and Upgrading of Arduino/Teensy via Networked Raspberry Pi

This post covers how to remotely monitor / upgrade an Arduino or other MCU behind a firewall. (Jump down to the Dec 2016 Update for Notes about the Duplicity Service that will easily and quickly allow remote access to an … Continue reading

Posted in c-arduino, c-rpi, c-teensy | Tagged | Leave a comment

Refurbishing a Skimmer Weir Gate

A weir gate is attached to swimming pool skimmers to keep the rubbish collected by the skimmer from floating back out into the pool. The ones I’ve seen use a Styrofoam float to keep the gate up.  I noticed my … Continue reading

Posted in c-Misc | Tagged | Leave a comment

Upgrading Teensy Code in the Field

I’ve got a few Teensy projects in ‘production’ now and I know I’m going to have to update the software onsite. In fact, I need to be prepared to allow an end-user to upgrade the software as one Teensy that … Continue reading

Posted in c-teensy | Tagged | 4 Comments

Using Modulus Arithmetic to Navigate a Circular List

I have to go thru my notes every so often to find the formula for navigating backwards, so I’ll post this stuff here in case anyone else finds it useful. Modulus math is very handy for dealing with circular functions … Continue reading

Posted in c-arduino, c-lazarus | Tagged | Leave a comment