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PCB / Electro Mechanical Design
Mike Trowill
,
Truro, United Kingdom
Experience
Other titles
Skills
I'm offering
Many years’ experience of PCB layout, Schematic capture and Component Part Creation: PCB Footprint and Schematic Symbols, Mapping files containing Pin Definitions and pin swapping data etc. The creation of Bare Board Manufacturing Data Packs, such as Gerber Files, Drill Files, Fabrication drawings, Step and Repeat Panels.
The Creation of Board Assembly Drawings, BOM generation and Pick and Place data.
On many occasions, I had input on Projects from their conception to completion, and assisted in the specification of Laminates, Board Stack-Ups, Via Technology, and PCB Finish etc. I also worked in close collaboration with Electronic, RF, Mechanical and Test engineers in order to ensure designs met the required specification.
The Creation of Board Assembly Drawings, BOM generation and Pick and Place data.
On many occasions, I had input on Projects from their conception to completion, and assisted in the specification of Laminates, Board Stack-Ups, Via Technology, and PCB Finish etc. I also worked in close collaboration with Electronic, RF, Mechanical and Test engineers in order to ensure designs met the required specification.
Markets
United Kingdom
Industries
Language
English
Fluently
Ready for
Larger project
Ongoing relation / part-time
Full time contractor
Available
My experience
2020 - ?
temp
PCB Layout Engineer
NTT Disruption.
(Contract)
The Layout of a new main control board and other ancillary boards for "JIBO ® the Social Robot MKII".
The PCB was 10 layer impedance controlled stackup, with high speed interfaces such as USB3, PCIe, Mipi DSI & CSI.
The role involved interfacing with Mechanical and Electronics engineers to ensure the completed design met the required specification.
Remote working for the Head of Engineering, who is based in USA, with communication via E commerce.
Designs completed using Altium 21
The Layout of a new main control board and other ancillary boards for "JIBO ® the Social Robot MKII".
The PCB was 10 layer impedance controlled stackup, with high speed interfaces such as USB3, PCIe, Mipi DSI & CSI.
The role involved interfacing with Mechanical and Electronics engineers to ensure the completed design met the required specification.
Remote working for the Head of Engineering, who is based in USA, with communication via E commerce.
Designs completed using Altium 21
Design, Layout, Engineering, Electronics, PCB, Social, USA, Altium
2020 - 2020
temp
PCB Layout Engineer
Cellular Highways.
(Contract)
The Layout of a new main control board for a cutting edge Cell Sorting machine. This was a complex large design incorporating a large amount of high speed elements, including USB3, HDMI, Gigabit Ethernet & Mipi. A 24 channel high speed analogue input bus was also present along with high speed A to D converters. Stepper Motor drives were also onboard along with Switched Mode Power Supplies.
The PCB was a 12 layer impedance controlled stackup, with differential 90 /100 ohm and 50 ohm single ended signals, requiring impedance controlled matched delay routing.
The role involved interfacing with Mechanical and Electronics engineers to ensure the completed design met the required specification.
Remote working for the Head of Engineering, who is based in Cambridgeshire, with communication via E commerce.
Designs completed using Altium 21
The Layout of a new main control board for a cutting edge Cell Sorting machine. This was a complex large design incorporating a large amount of high speed elements, including USB3, HDMI, Gigabit Ethernet & Mipi. A 24 channel high speed analogue input bus was also present along with high speed A to D converters. Stepper Motor drives were also onboard along with Switched Mode Power Supplies.
The PCB was a 12 layer impedance controlled stackup, with differential 90 /100 ohm and 50 ohm single ended signals, requiring impedance controlled matched delay routing.
The role involved interfacing with Mechanical and Electronics engineers to ensure the completed design met the required specification.
Remote working for the Head of Engineering, who is based in Cambridgeshire, with communication via E commerce.
Designs completed using Altium 21
Design, Layout, Engineering, Electronics, Mode, Power, PCB, Altium
2019 - 2020
temp
PCB Layout Engineer
Ticketer UK.
(Contract)
The layout of PCBs for use in automated ticket machines for bus and coach operators. The role involved design of next generation ticket machines with additional functionality such as NFC card reader, optical reader and 4G wireless distribution for use by bus operators for vehicle monitoring, etc. The boards contain a mix of Analog, Digital, FPGA and associated Power Supplies. All boards were designed to IPC2221B Class 3 for high reliability.
All designs completed using Cadence Allegro for PCB Design and OrCAD for Schematic Capture v17.4
The layout of PCBs for use in automated ticket machines for bus and coach operators. The role involved design of next generation ticket machines with additional functionality such as NFC card reader, optical reader and 4G wireless distribution for use by bus operators for vehicle monitoring, etc. The boards contain a mix of Analog, Digital, FPGA and associated Power Supplies. All boards were designed to IPC2221B Class 3 for high reliability.
All designs completed using Cadence Allegro for PCB Design and OrCAD for Schematic Capture v17.4
Design, Layout, Wireless, PCB design, Monitoring, Coach, Power, FPGA, PCB
2019 - 2019
temp
PCB Layout Engineer
Ultra Electronics Ltd.
(Contract)
The layout of PCBs used in back up auxiliary electronic power drive for nuclear submarines The Boards were designed for high reliability to IPC2221 Class 3. High speed LVDS serial buses were utilised running at 20MHz requiring 100ohm differential pair impedance routing with impedance matched output resistors and terminating networks. PECL logic was used for clock distribution running at 80MHz requiring 100ohm differential pair impedance matched routing and terminating networks. The boards contained a mix of Analog, Digital, FPGA and associated Power Supplies. Note - This role required full UK security clearance.
All designs completed using Altium Designer 20
The layout of PCBs used in back up auxiliary electronic power drive for nuclear submarines The Boards were designed for high reliability to IPC2221 Class 3. High speed LVDS serial buses were utilised running at 20MHz requiring 100ohm differential pair impedance routing with impedance matched output resistors and terminating networks. PECL logic was used for clock distribution running at 80MHz requiring 100ohm differential pair impedance matched routing and terminating networks. The boards contained a mix of Analog, Digital, FPGA and associated Power Supplies. Note - This role required full UK security clearance.
All designs completed using Altium Designer 20
Layout, Security, Power, FPGA, Logic, PCB, Altium, UP
2018 - 2018
temp
PCB Layout Engineer
Safran Electrical and Power Ltd.
(Contract) Buckinghamshire.
The Layout of PCBs used in Power Control Systems, for the Sikorsky CH-53 Helicopter. The boards contained a mix of Analog, Digital, FPGA and associated Power Supplies. Of Multi-Layer construction, using conventional via's The Boards were densely populated with components mounted on both sides of the PCB. Schematic and Component symbol Library creation was also required to support the Electronics Design Team.
Note - A Baseline Security Check was obtained for this role.
All Designs completed using Cadence Allegro for PCB Design and HDL for Schematic Capture.
The Layout of PCBs used in Power Control Systems, for the Sikorsky CH-53 Helicopter. The boards contained a mix of Analog, Digital, FPGA and associated Power Supplies. Of Multi-Layer construction, using conventional via's The Boards were densely populated with components mounted on both sides of the PCB. Schematic and Component symbol Library creation was also required to support the Electronics Design Team.
Note - A Baseline Security Check was obtained for this role.
All Designs completed using Cadence Allegro for PCB Design and HDL for Schematic Capture.
Design, Layout, Security, PCB design, Support, Electronics, Power, FPGA, PCB
2017 - 2018
job
Electro- Mechanical Designer
Sharetree Ltd.
The design / detailing of Environmental Chambers for component life testing.
Environmental Chambers expose test components to raised Temperatures (typically 150 deg. C), Low Temperatures (typically 0 deg. C), and humidity.
The chambers are constructed from stainless steel sheet, contained with a steel frame, with many sub-assemblies, some with fine tolerance machined moving parts. Obviously due to the operating temperatures involved materials selection was important, therefore the role also involved the specification and purchase of suitable materials, BOM generation and sub contract supplier interfacing. All mechanical assemblies and piece parts were Modelled and detailed using AutoCAD Inventor.
The role also involved the creation of wiring and or schematic diagrams for machine controls and instrument panels. Pneumatic systems were employed on some machines and, therefore, in those instances pneumatic circuits were produced as required. Control panel layouts and housing were also produced; detailing such items as terminal rails, front panel components etc. I was also solely responsible for all PCB layouts.
Environmental Chambers expose test components to raised Temperatures (typically 150 deg. C), Low Temperatures (typically 0 deg. C), and humidity.
The chambers are constructed from stainless steel sheet, contained with a steel frame, with many sub-assemblies, some with fine tolerance machined moving parts. Obviously due to the operating temperatures involved materials selection was important, therefore the role also involved the specification and purchase of suitable materials, BOM generation and sub contract supplier interfacing. All mechanical assemblies and piece parts were Modelled and detailed using AutoCAD Inventor.
The role also involved the creation of wiring and or schematic diagrams for machine controls and instrument panels. Pneumatic systems were employed on some machines and, therefore, in those instances pneumatic circuits were produced as required. Control panel layouts and housing were also produced; detailing such items as terminal rails, front panel components etc. I was also solely responsible for all PCB layouts.
Design, Autocad, C, SoMe, Test, Testing, Inventor, PCB, Autocad
2017 - 2017
temp
PCB Layout Engineer
unknown.
(Contract)
DG PCB are a PCB design Bureau. I was employed on a contract basis to design PCBs for their various clients. During my time at DG, I designed mainly mixed technology Boards, incorporating a broad spectrum of circuit types, RF, analogue and Digital. A large part of the role was interfacing with the client either in person or via E-Conference, email and phone.
As well as PCB layout I also drew the Schematics for some of the clients and produced Bills of Materials and Production drawings. I also advised the clients on stack up construction, materials and plating finishes.
All Designs completed using either Altium Designer or Cadence Allegro
DG PCB are a PCB design Bureau. I was employed on a contract basis to design PCBs for their various clients. During my time at DG, I designed mainly mixed technology Boards, incorporating a broad spectrum of circuit types, RF, analogue and Digital. A large part of the role was interfacing with the client either in person or via E-Conference, email and phone.
As well as PCB layout I also drew the Schematics for some of the clients and produced Bills of Materials and Production drawings. I also advised the clients on stack up construction, materials and plating finishes.
All Designs completed using either Altium Designer or Cadence Allegro
Design, Layout, SoMe, Technology, PCB design, Production, PCB, Altium, UP
2016 - 2017
temp
PCB Layout Engineer
Lockheed Martin.
(Contract)
The Layout of PCBs for Tank Turret control systems. The Boards contained a mix of Analog, Digital and associated Power Supplies, of Multi-Layer construction, using conventional via's.
Schematic Creation was also required for some designs to support the Electronics Design Team. Note - SC Clearance was obtained for this role.
All Designs completed using Altium Designer
July 2016 to October 2016
The Layout of PCBs for Tank Turret control systems. The Boards contained a mix of Analog, Digital and associated Power Supplies, of Multi-Layer construction, using conventional via's.
Schematic Creation was also required for some designs to support the Electronics Design Team. Note - SC Clearance was obtained for this role.
All Designs completed using Altium Designer
July 2016 to October 2016
Design, Layout, SoMe, Support, Electronics, Power, PCB, Altium
2016 - 2016
job
PCB Layout Engineer (Contact)
Advanced Layout Solutions.
ALS are a PCB design Bureau. I was employed on a contract basis to design PCBs for their various clients. During my time at ALS I designed mainly mixed technology Boards, incorporating a broad spectrum of circuit types, RF, analogue and Digital. Some of the designs were flexi-rigids.
A large part of the role was interfacing with the client either in person or via E-Conference, email and phone.
As well as PCB layout I also drew the Schematics for some of the clients and produced Bills of Materials and Production drawings.
I also advised the clients on stack up construction, materials and plating finishes.
All Designs completed using either Altium Designer or Cadence Allegro
A large part of the role was interfacing with the client either in person or via E-Conference, email and phone.
As well as PCB layout I also drew the Schematics for some of the clients and produced Bills of Materials and Production drawings.
I also advised the clients on stack up construction, materials and plating finishes.
All Designs completed using either Altium Designer or Cadence Allegro
Design, Layout, SoMe, Technology, PCB design, Production, PCB, Altium, UP
2016 - 2016
temp
PCB Layout Engineer
Allen & Heath.
(Contract)
The layout of PCBs used in high end Digital Mixing Desk used by Arenas, Stadiums, Churches and Bands etc.
The designs incorporated high speed digital signals such as SPI bus and Gigabit Ethernet, requiring impedance control and delay match routing of 50ohm and 100ohm differential pair signals. Low level audio signals, A to D and D to A converters and power supplies.
The boards were of conventional construction with drilled via's, controlled impedance stack ups, with double sided component placement.
Reduced layer count was a mayor strategy of the design to minimize board cost, which made the layouts challenging, most designs were 6 layer but where possible this was reduced in some instances to 2 layer, where impedance control was not required.
All Designs completed using Altium Designer.
The layout of PCBs used in high end Digital Mixing Desk used by Arenas, Stadiums, Churches and Bands etc.
The designs incorporated high speed digital signals such as SPI bus and Gigabit Ethernet, requiring impedance control and delay match routing of 50ohm and 100ohm differential pair signals. Low level audio signals, A to D and D to A converters and power supplies.
The boards were of conventional construction with drilled via's, controlled impedance stack ups, with double sided component placement.
Reduced layer count was a mayor strategy of the design to minimize board cost, which made the layouts challenging, most designs were 6 layer but where possible this was reduced in some instances to 2 layer, where impedance control was not required.
All Designs completed using Altium Designer.
Design, Layout, SoMe, Audio, Power, PCB, Altium
2012 - 2015
job
PCB Layout Engineer
Nvidia (UK) Ltd, Aztec West.
The layout of PCMCIA 2 card 4G modems for use in Laptops and Tablets,
The PCB layouts for these boards were innovative, with 10 Layer Impedance Controlled Stack Ups, 60 Micron track and gap and Any Layer Stacked Micro Via's (220 Micron).
The Chip Sets were High Pin Count 0.4mm BGAs with 0201 discrete components. All the designs were very dense. The RF elements of the designs required Impedance control (strip line and micro strip) with either 50ohm single ended or 100ohm Differential pairs. The digital elements were similar due to high clock speeds; DDR2 memory routing was also required with length matching of Clock, data and address lines. I was involved in the full design cycle, Component creation, Schematic Capture, PCB Layout, BOMs, DFM etc. I also designed the "On Board" RF Screening Cans using AutoCAD.
All Designs completed using Cadence Allegro (full suite).
Mechanical Screening Cans Designed with AutoCAD.
The PCB layouts for these boards were innovative, with 10 Layer Impedance Controlled Stack Ups, 60 Micron track and gap and Any Layer Stacked Micro Via's (220 Micron).
The Chip Sets were High Pin Count 0.4mm BGAs with 0201 discrete components. All the designs were very dense. The RF elements of the designs required Impedance control (strip line and micro strip) with either 50ohm single ended or 100ohm Differential pairs. The digital elements were similar due to high clock speeds; DDR2 memory routing was also required with length matching of Clock, data and address lines. I was involved in the full design cycle, Component creation, Schematic Capture, PCB Layout, BOMs, DFM etc. I also designed the "On Board" RF Screening Cans using AutoCAD.
All Designs completed using Cadence Allegro (full suite).
Mechanical Screening Cans Designed with AutoCAD.
Design, Layout, Autocad, PCB, Autocad
2011 - 2012
job
PCB Layout Engineer
Calidus Engineering Ltd.
The Layout of PCBs for use in Down Hole Probes for the Oil and Gas Industry. The Main design Criteria for these boards was compact design due to small dia. of the tools (typically 5 inches) and High reliability due to the harsh environments these tools are exposed to typically high temperature and pressure.
All boards were of Multi-layer construction with surface mount components mounted on both sides. I was responsible for PCB Layout, Schematic Capture, Component Library Creation and Maintenance, manufacturing Data Packs and BOMs etc. I conceived and implemented the migration of the companies Libraries from discreet Schematic Libraries to a fully functional Data Base Library.
All Designs completed using Altium Designer.
All boards were of Multi-layer construction with surface mount components mounted on both sides. I was responsible for PCB Layout, Schematic Capture, Component Library Creation and Maintenance, manufacturing Data Packs and BOMs etc. I conceived and implemented the migration of the companies Libraries from discreet Schematic Libraries to a fully functional Data Base Library.
All Designs completed using Altium Designer.
Design, Layout, Oil and Gas, PCB, Altium
2006 - 2006
job
Electrical Draughtsman
Aromatic Fielder Ltd.
The Draughting of Electrical Schematics, Wiring Diagrams and as built drawings for Pharmaceutical Production Machines.
The Creation of Wiring / Tubing Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings were produced using AutoCAD 2004 or PromisE. (RS Wire)
The Creation of Wiring / Tubing Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings were produced using AutoCAD 2004 or PromisE. (RS Wire)
Autocad, Pharmaceutical, Production, Autocad
2005 - 2005
job
Electro - Mechanical Designer
Siemens Industrial Turbo Machinery.
The Draughting of Electrical Schematics, Wiring Diagrams and as built drawings for control systems of Turbine power generators.
The creation of Parts Lists and Wiring Schedules.
The Control systems were housed in 19" Rack units and therefore the job also entailed the layout of components within the rack i.e. position and number of terminal rails and layout of Front Panel components such as Switches and lamps etc. Detail drawings of Rack modifications were produced when required.
Mechanical Drawings were produced using AutoCAD 2000 and Electrical Drawings using or RS Wire (PromisE).
The creation of Parts Lists and Wiring Schedules.
The Control systems were housed in 19" Rack units and therefore the job also entailed the layout of components within the rack i.e. position and number of terminal rails and layout of Front Panel components such as Switches and lamps etc. Detail drawings of Rack modifications were produced when required.
Mechanical Drawings were produced using AutoCAD 2000 and Electrical Drawings using or RS Wire (PromisE).
Layout, Autocad, Detail, Power, Autocad
2004 - 2004
job
Electrical Draughtsman
Aeromatic Fielder Ltd.
The Draughting of Electrical Schematics, Wiring Diagrams and as built drawings for Pharmaceutical Production Machines.
The Creation of Wiring / Tubing Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings produced using AutoCAD 2004 or PromisE. (RS Wire)
The Creation of Wiring / Tubing Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings produced using AutoCAD 2004 or PromisE. (RS Wire)
Autocad, Pharmaceutical, Production, Autocad
2003 - 2004
job
Electrical Draughtsman
Tecker Ltd.
The Draughting of Electrical Schematics, Wiring Diagrams and as built drawings for Process Control Equipment, generally Motor Control Centres, for the Water Industry.
The Creation of Wiring Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings produced using AutoCAD or RSWire (AutoCAD bolt on package for wiring diagrams). I acted as the system administrator; therefore, I was responsible for the installation of the software, creation of company standard symbols, macros and drawings.
I also created specific Microsoft Access Database Forms, Reports and compiled a specific Part Table of all company standard parts.
The Creation of Wiring Schedules and Cable Diagrams for site Installation. Extracting required information, from schematics and P&ID diagrams.
All Drawings produced using AutoCAD or RSWire (AutoCAD bolt on package for wiring diagrams). I acted as the system administrator; therefore, I was responsible for the installation of the software, creation of company standard symbols, macros and drawings.
I also created specific Microsoft Access Database Forms, Reports and compiled a specific Part Table of all company standard parts.
Autocad, Database, Software, Administrator, Autocad
2002 - 2002
job
PCB layout Engineer
Powerwave UK.
PCB designs for Mobile Phone Network Base Station Transceivers.
CAD System - PCAD and Spectra Auto Router
CAD System - PCAD and Spectra Auto Router
Layout, CAD, Router, Network, PCB
2001 - 2002
job
PCB Layout Engineer
Smith's Industries.
PCB Designs for Euro Fighter Mission Control Computer, Highly Complex Digital Microprocessor boards. The most complex of which comprised of 14-layer topology with Micro via's both sides, internal blind and buried via's and through via's. The board had 10 routing layers and 4 internal power layers.
Layout, Power, PCB
2000 - 2001
job
PCB Layout Engineer
Mentor Graphics.
PCB designs for mobile telecommunications Base Station power amplifiers, for use in new 'edge' based systems. The amplifiers incorporated complex lineariser technology, used purely surface mount components and 2 layer PCBs.
Layout, Technology, Power, PCB
1997 - 1997
job
PCB Layout Engineer
Smiths Industries.
Design of printed circuit boards for use in civil aircraft multifunction displays.
Design, Layout, PCB
1996 - 1996
job
PCB Layout Engineer
Philips Telecom.
The design of printed circuit boards for use in radio communications products, specifically digital mobile phone system handsets (TETRA) for use by police forces, etc. The designs include RF, audio and microprocessor systems.
Design, Layout, Radio, Audio, PCB
1990 - 1991
job
PCB Layout Engineer
ARG ElectroDesign Ltd.
Design of single/double sided printed circuit boards for use in high-speed telecommunications test equipment.
CAD System - PADS.
CAD System - PADS.
Design, Layout, CAD, Test, PCB
1990 - 1990
job
PCB Layout Engineer
Lucas Diesel Systems Ltd.
Design of single/double sided printed circuit boards for use in motor vehicles, specifically in diesel engine management systems.
Design, Layout, Management, PCB
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