Blog Posts

Google Drive Woes

Recently I noticed that my Google Drive space was nearly full. I also noticed that Gmail was consuming a majority of the space. I could not understand why as I delete and move my emails to a local file in Outlook. Looking at this more, I found out why and spent a whole day to get my Gmail space down to zero. Google keeps all email even if you delete it in Microsoft Outlook. This was something that I was not aware of but not surprised. The surprising part is that the space taken by the deleted emails counts against…

Website Changes

We’ve made some changes to the site to make it align more with our goals. When the website was first created, it was expect that the how-to articles and projects would be the major focus, however there have been too infrequent updates so the site was stale. This is mostly do to the amount of time needed to complete a project, then actually write good content to document the steps taken. With the new year, we are going to take a different approach and put the blog posts front and center and make the projects and how-to articles a secondary…

Microchip AR1100 Resistive Touch Screen to USB

I’m currently working on a project similar to what Rune Kyndal did, which is putting a Raspberry Pi inside an old HP 95LX case. You can see Rune’s project on HACKADAY.IO. I sourced a 800×320 screen from BuyDisplay.com, that is a good match for the original dimensions of the HP 95LX display. Arguably, the screen that Rune sourced is better at 800×480, but I wanted a display that would allow for the original faceplate to be used so it looks as close to the original as possible. I still need to cram everything into the housing. One thing that I…

Raspberry Pi 4 – 19″ Rack with four units

Source Files are located on GitHub at https://github.com/richteel/pi_status. The inspiration for this project is from a UCTRONICS Pi Rack that Jeff Geerling reviewed on his YouTube channel. The UTRONICS product may be seen at https://www.uctronics.com/cluster-and-rack-mount/for-raspberry-pi/1u-rack-mount/uctronics-pi-rack-pro-for-raspberry-pi-4b-19-1u-rack-mount-support-for-4-2-5-ssds.html. While I cannot build something as elegant as the UCTRONICS Pi Rack, I wanted to do something similar. I had a 1U ABS 19″ Rack Mount Case, so I decided to replicate the UCTRONICS product. Below is some information on my build. Materials Notes You may find official retailers with Raspberry Pi boards in stock by going to https://rpilocator.com/. Tools and Prerequisites Laser Cutting Files Download the files from…

Re-creation of Psion Organiser II

In 1984, Psion launched the first practical pocket computer, the Psion Organiser I. Psion followed up with the Psion Organiser II. Andrew Menadue has a project which recreates the Psion Organiser II with the Raspberry Pi Pico and ESP32-WROOM-32. He has several videos on YouTube and some GitHub repositories. Andrew was nice enough to send me a set of boards, which I’m in the process of building. Bill of Materials The bill of materials is an Excel document located on GitHub. Power Supply

Physical File Folder Tabs – HTML Solution to Print Folder Tabs

Today, I needed to print some physical folder tabs. I wanted to challenge myself a bit to see if it were possible to build an HTML application that could do the job. Ideally, I wanted to load an Excel file and use the contents of a worksheet to create the labels. I was able to find some example code that uses some AJAX libraries from CloudFlare to parse the Excel file. With that and a few other bits of code samples, I was able to build a robust local page for creating physical folder tabs that may be printed and…

Armachat

I have been working on the Armachat project by Peter Misenko. I rewrote the code to implement functions that Peter had not completed and added a few more. Some of the added features include: Implemented detection of a long keypress Dedicated keys when not in the editor Q – Toggle the keyboard backlight A – Toggle the display backlight V – Increase volume / Long keypress to decrease volume B – Increase display brightness / Long keypress to decrease display brightness Ability to receive messages in all screens including editor Validation of editor input Confirmation prompts I have been working…

SainSmart 2.8″ TFT LCD Display Touch Screen on Raspberry Pi

I have a SainSmart 2.8″ TFT LCD Display Touch Screen a couple of years ago from MicroCenter. I want to use it on the Raspberry Pi and was surprised that no one has posted how to do this. I looked into this a bit and it looks like it should be easy enough. One of the things that throws folks off is the display is 16 bit verses 8 bit that is typically used on these displays. You can still use them with only 8 bits of data. Unfortunately SainSmart does not provide information on their product pages to allow…

ATtiny85

I’m once again revisiting the ATtiny85 and wanted to see how to load sketches through USB in addition to the ICSP connection. I ran into quite a few stumbling blocks so I want to capture what I found in hopes that it will help others.  

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