An ESP8266 project to display cryptocurrency prices on an OLED screen. An ESP8266 and an SSD1306 Adafruit OLED screen were used. The wiring is GND->GND, VDD->3.3V, SCK->D1 and SDA->D2. Code for this project can be seen at https://github.com/conorwalsh/esp8266-crypto. As always if you have any questions please don’t hesitate to ask, Conor.
I am working on a project and I needed an easy way to create an Ethernet jack from a standard patch cable. I found these cheap RJ45 Keystone Adapters (https://www.ebay.ie/itm/RJ45-Keystone-Jack-Wall-End-Plug-Cat-5e-Ethernet-LAN-Network-Module-Port-Adapter/252314420824) which you can easily wire to a standard Ethernet cable. I needed a way to cover the exposed connections and attach it to the project so I designed a cover for them. The jack has to be slightly modified in order to fit into my design, two clips have to…
I needed a cheap way to provide Wi-Fi to an Arduino for a project that I was working on. The ESP8266 is an amazing cheap Wi-Fi enabled micro-controller that I have started to use in some of my projects. You can find Arduino ESP8266 shields on ebay or Amazon by searching for “esp8266 arduino shield” for €5 to €10 which is far cheaper than any of the standard Arduino Wi-Fi shields which can be anywhere from €30 to €80! The…
I am using a power supply from Amazon for a project that Im working on and I dont like the cover that they have for preventing people from touching the contacts so I decided to 3D print a new one. I wanted something minimalist that could be easily removed so I designed the following in Solidworks. And then printed it on my ANET A8 3D printer. Then I fit it into the power supply. If you would like to print…
I have been working as a software engineering intern with Intel for the last 9 months (hence the reduction in content). As part of my internship, I wrote a paper on some of the work I was doing and Intel published my paper on the Intel Developer Zone. https://software.intel.com/en-us/articles/optimize-memory-usage-in-multi-threaded-data-plane-development-kit-dpdk-applications Part of my work involved the optimisation of a product called the Virtualised Cable Modem Termination System (vCMTS) which is a packet processing application for the cable telecommunications industry. As part…
I wrote some python scripts for measuring throughput on Ubiquiti routers (running EdgeOS). These scripts do not perform a speedtest, they return the throughput of the router which is how much data is moving through the router at that time. There are two versions of the script one that runs once and one that runs until stopped. Example output of single run script: Example output of the loop script: There is more information about the scripts and the…
The filter on the pump I was using was too fine so I designed a coarser one to replace it. I designed the new filter in SolidWorks. The final print can be seen below: The new filter installed in the pump can be seen below: The files for this model can be found on Thingiverse here. As always if you have any questions please don’t hesitate to ask, Conor.
If a roll of filament is new or a print is very wide or tall your filament is more likely to get stuck in the spool holder. This caused one of my prints to fail because the filament got tangled and jammed in the holder and the printer pulled the roll into itself. I designed this guide to go on top of the printer to guide the filament down to the extruder. The guide uses the bolt from rod guard…
I needed to run a wire from inside an external light to outside it to temporarily get power into my garden. I needed to print a large hexagon the same size and shape as the top of the light shown below but with a gap for the wire to get through. But this shape was larger than the bed on my 3D printer. So I designed the print in 3 parts. The parts are joined with cross-halving joints that will…
I recently did my largest print ever which was expected to take 26 hours! But after about 16 hours there was a power cut and the printer stopped and lost all of its progress. In this post I will got through how I managed to recover the print and allow it continue. The power went during the night so I found the printer after about 4 hours of being off. The first problem was that the nozzle was stuck to…