Freelance Electronics Engineer.

Freelance Professional Electronics Engineer John Heritage London, Essex. UK

Electronic Control Systems

Electronic Control Systems, Professional Design Professional industrial control systems have always been a large part of my working life, and I have spent many hours over the years understanding the fundamentals of how control systems function and overseeing a large array of different Sensors, Actuators , Encoders, Motor Drives, Relay and Solid state Switching etc. […]

Embedded Electronics

Embedded Electronic Design & Development Professional 16 / 32 Bit Development From John Heritage I have been designing with embedded electronics and embedded micro systems, since the early 1990s, and the industry has progressed on a long way. It fair to say the early micros were fairly limited in power, performance and feature set, compared with […]

PCB Repair Service

PCB Professional Repair Service From John Heritage When Components Burnout! From time to time control systems, electronic components and PCB’s do fail, thus many engineers simply order a new PCB and replace the faulty offending Print Circuit Board. Depending on the complexity of the PCB and control electronics a new PCB can sometimes cost many […]

Bespoke Electronic Design Services

Bespoke Electronic Design Services To Your Specification   Design & Development John Heritage provides a bespoke electronic design service for both software and hardware applications within various industries on a strictly confidential basis. I have experience in design within the Home Automation Industry, Swimming Pool & Leisure Industry, Commercial Control Systems, Embedded Control Design, Digital Speech, […]

Professional Test, Repair & Fault Finding

Professional Test, Repair & Fault Finding The Basics In Electronics From a very early age I was learning the basic fundamentals of electronics, including the theory and knowledge that goes along with it. It’s fair to say I started learning a ground roots level and have worked my way up through the different ranks over […]

I2C BUS

I2C BUS Electronic Design & Firmware by Embedded Design Engineer John Heritage   I2C BUS (Inter Integrated Circuit) I2C The Inter-Integrated Circuit bus (I2C) is a patented interface developed by Philips Semiconductors. (In order for an IC manufacturer to implement the I2C bus in hardware, they must obtain licensing from Philips.) As a professional electronics design […]

RS-422 RS-485

RS-422 and RS-485 Electronic Design & Firmware by Embedded Design Engineer John Heritage I have worked with the RS-485 protocol when designing DMX lighting control hardware, by using differential line drivers high speed serial data can be achieved in a multi node control system. TIA/EIA-422-B (typically referred to as RS-422) and TIA/EIA-485-A (typically referred to as […]

Soldering Tutorial 2

John Heritage Video Blog Area ….. Excellent Videos From Engineer Dave Jones. A collection of my favorite video’s from electronics engineer David Jones, I adore Davids sense of humor and what makes him tick in the electronics world! I have spent many hours watching him and very often agree with most of his views and […]