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Cojocariu G.

@SirScofield

5.0
3

2.7

2.7

100%

PCB Layout Designer

$10 USD / Hour

・

Flag of

Romania (7:44 AM)

・

Joined on August 3, 2016

$10 USD / Hour

・

I am a hardware developer and layout design engineer with 6+ years experience working with high-bandwidth interface standards (CSI, GMSL, FPD-Link, OpenLDI), SerDes pair with both LVDS and single ended data transmission standards, LED drivers, power supplies circuits (buck, boost, LDO). I also have some experience in IoT products development with modules as BLE, CAN, GNSS, Ethernet PHY, LTE Cat M1/NB1, WWAN. I finished my Bachelor degree in Applied Electronics (2013-2017) and Masters degree in Computer and Communication Networks (2017-2019), Faculty of Electrical Engineering and Computer Science at "Ștefan cel Mare" University of Suceava, Romania. The below PCB projects are just simple designs done during my Bachelor's for TIE which is a design of electronics modules and assemblies contest for students where I won 1st place.

Verifications

On time

100%

On budget

100%

Accept rate

100%

Repeat hire rate

50%

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Portfolio

Portfolio

3366516
Design of two custom programming boards for ESP12 & ESP32 Wifi modules.

ESP modules

Design of two custom programming boards for ESP12 & ESP32 Wifi modules.

ESP modules

2883915
The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

2883906
This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

2883895
My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

2883876
This is a 5W wireless charger and it consists of: -a single chip wireless power transmitter -a full bridge inverter -an EEPROM -an energy transfer coil -ESD protection circuit

Pcb Design 08

This is a 5W wireless charger and it consists of: -a single chip wireless power transmitter -a full bridge inverter -an EEPROM -an energy transfer coil -ESD protection circuit

Pcb Design 08

2883869
This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

3366516
Design of two custom programming boards for ESP12 & ESP32 Wifi modules.

ESP modules

Design of two custom programming boards for ESP12 & ESP32 Wifi modules.

ESP modules

2883915
The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

The project goal is to design and generate layout and fabrication files for an ECG wireless system. The ECG wireless system consist of a Bluetooth device, made with CC2640 that will transmit to a Smartphone information’s received from the ECG circuit (ADS1293). Both modules are powered up from a 3V Li-Ion Battery and two Boost Converters (TPS61221 and TPS61222) that will give 3V3 and 5V respectively for both circuits used in the design. In this project I only contributed with the layout.

Pcb Design 11

2883906
This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

This project is a solar battery charger (from the TIE 2016 contest) and it consists of: -a single chip boost converter with dynamic Maximum Power Point Tracking (SPV1020) -an output voltage and current controller (SEA05LTR) -a comparator circuit to detect a low-battery condition (around TL331KDBVR) -a smart high side driver with built in overcurrent protection function (AUIR3313S)

Pcb Design 10

2883895
My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

My duty here was to design and generate layout and fabrication files for a wireless communication module designer by my supervisor professor (Adrian Petrariu). The wireless communication module consists of a Bluetooth device that will transmit to a Smartphone the identification ID received from an NFC device. Both modules are powered up from a 3.7V battery pack that will recharge once a week via USB. The entire module is made to be portable, being used especially for golf. The golf club has attached an RFID tag that will be read via the NFC module. The information’s will be sent to a Smartphone via Bluetooth from where the user can see on a map the exact hit position performed. With all of this recorded positions, on the Smartphone will be generated a map that will provide information’s regarding the game play of the golf player.

Pcb Design 09

2883876
This is a 5W wireless charger and it consists of: -a single chip wireless power transmitter -a full bridge inverter -an EEPROM -an energy transfer coil -ESD protection circuit

Pcb Design 08

This is a 5W wireless charger and it consists of: -a single chip wireless power transmitter -a full bridge inverter -an EEPROM -an energy transfer coil -ESD protection circuit

Pcb Design 08

2883869
This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

This project goal is to design and generate layout and fabrication files for a digital satellite tuner (DVB-S2). It was designed by my mentor teacher at university. I only did the layout. The first image includes the ground planes.

Pcb Design 07

5.0 · 3 Reviews
3 Reviews
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Adrien P.

5.0

$146 USD

9 years ago

Re-Design two PCB circuits

Great Work. Getting better and better.

Electronics
Electrical Engineering
PCB Layout

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Adrien P.

5.0

$40 USD

9 years ago

Design a custom PCB board for manufacturing

Excellent work provided. Very serious designer, willing to help. Happily making the extra-mile in order to provide a perfect work. Will hire again.

PCB Layout

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Adrien P.

5.0

$45 USD

9 years ago

Project for SirScofield

Very good start as freelancer for SirScofield. Very nice person to work with. Patient, Willing to learn. Very good design skills in Altium Designer. I will definitely work with him again.

Electronics
PCB Layout
Circuit Design

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Experience

Hardware&Layout Engineer

Sep, 2017 - Jun, 2020

•

2 years, 9 months

Continental Engineering Services

Sep, 2017 - Jun, 2020

•

2 years, 9 months

I worked in automotive industry projects, both schematic and layout design, with high-bandwidth interface standards (CSI, GMSL, FPD-Link, OpenLDI), SerDes pair with both LVDS and single ended data transmission standards, LED drivers, power supplies circuits (buck, boost, LDO). I also have some experience in IoT products development with modules as BLE, CAN, GNSS, Ethernet PHY, LTE Cat M1/NB1, WWAN.

Sep, 2017 - Jun, 2020

•

2 years, 9 months

Education

Universitatea 'Stefan cel Mare' din Suceava

2017 - 2019

•

2 years

Computer and Communication Networks

Flag of

Romania

2017 - 2019

•

2 years

Universitatea 'Stefan cel Mare' din Suceava

2013 - 2017

•

4 years

Applied Electronics

Flag of

Romania

2013 - 2017

•

4 years

Qualifications

Certificate of Competence in PCB Design

2017

APTE (Association for Promoting Electronics Technology)

I was awarded with this certificate at the national contest in PCB Design TIE April 2017 (Interconnecting Techniques in Electronics) where I won the 1st prize.

2017

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