David Ledger Email & Phone Number

Sydney, New South Wales, Australia

Sydney, New South Wales, Australia

Sydney, New South Wales, Australia

Sydney, New South Wales, Australia

Sydney, New South Wales, Australia

Sydney, New South Wales, Australia

During this role I helped with lab tutoring of the following university subjects: - Electronics and Circuits, and - Introduction to Electrical and Electronic Engineeringin this role, I helped students by explaining the theory behind practical lab exercises.I also hosted sessions to help students with soldering and debugging their circuits for these university subjects: - Introduction to Mechanical and Mechatronic Engineering, - Introduction to Electrical Engineering, and - Introduction to Digital Systems.In these classes I would teach soldering and teach people how to debug their soldered circuits. As part of this role, I would be coordinating with the suppliers of the parts for the classes. I would ensure continuity of supply by setting up robust supplier contingencies.

Sydney, New South Wales, Australia

EEVblog is a YouTube channel, forum, and store. It sells unique products and regularly produces videos related to Electronics Engineering. The videos often require examples of various circuits, prototypes, or mathematics to back up certain claims within videos. In my part time role, I was responsible for:- designing and producing some of these prototypes, mathematics and at times some of the videos, and- handling the periodic shipping of various goods to customers.

Sydney, New South Wales, Australia

An educational outreach project, to teach high school students more about space.Developed a python library to interface with colour, UV, IR, temperature, humidity, and ambient light sensors as well as a camera for a cube satellite. The cube satellite was successfully deployed to the international space station for testing.

Chatswood, New South Wales, Australia

This was a high paced job, and in the short time I had the opportunity to work on various projects with the team at Ingenuity. I worked on:- Key Finder: A Bluetooth LE 4.0 product, that could be used to locate somebodies the keys using their phone. I performed fine soldering of 0402 components during the development of this product.- Portable Phone Charger: A device used by bars and clubs to provide charging of patron’s phones from their tables. I learnt about EMC emissions, EMC testing, developed software to program the device in production, and learnt about battery charging circuits.- Multi-Phone Charging System: A device used to charge multiple "Portable Phone Chargers" simultaneously. I worked on the soldering of parts, assisted in prototyping and modding of circuit board assemblies, and learnt about the driving of LCD screens.-Robotics: I worked on a home automation robotics project, designed sheet metal parts in Rhino 3d, and worked with a team to design various aspects of the project (under NDA).- Town Water Saver: A device used to detect leaks in plumbing. Worked with my mentor to design aspects of the schematic, perform the PCB layout, and coordinate the procurement of parts to create prototypes. I developed the devices firmware in C, did EMC compliance testing and resolved a source of emissions so that the product could be compliant.- Pump Pressure Controller: A water saving device that works by controlling the flow from a pump. I did the circuit board layout, firmware in C, and sourced various parts. - Serial Communication Interfaces: I did the PCB layout, coordinated the manufacturing of an adapter board, which would provide a RS232 serial interface to a client's product. - Medical Laser Device: A prototype device that used specific wavelengths of infrared to target fat in the body and help it be absorbed by the blood and then leave the body. Worked on the prototyping of a medical device and designed a Perspex case in Rhino3d.