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# Development
This part containts developement milestones with accompaning documents.
This part contains development milestones with accompanying documents.
## 1. Technical requirements
The technical requirements for O-ESD hardware are summarized along with review of multiple ESD guns available on the market. Technical specifications of hardware on the market are compared to the specification from IEC61000-4-2 standard.<br>
The technical requirements for O-ESD hardware are summarized along with a review of multiple ESD guns available on the market. Technical specifications of hardware on the market are compared to the specifications from IEC61000-4-2 standard.<br>
[Technical requirements](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/raw/branch/main/Documents/O-ESD-01.pdf)
## 2. Schematics and considered realizations of high-voltage generator for O-ESD
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[Schematics and possible realizations of high-voltage generator for O-ESD](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/raw/branch/main/Documents/O-ESD-02.pdf)
## 3. Trade-offs and cost-benefit analysis of considered solutions
The cost-benefit analysis of considered solutions is done by taking into the account the availability of electronic components on website of online distributors of electronic components. The understood trade-offs for considered solutions are given.<br>
The cost-benefit analysis of considered solutions is done by taking into account the availability of electronic components on website of online distributors of electronic components. The understood trade-offs for considered solutions are given.<br>
[Trade-offs and cost-benefit analysis of considered solutions](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/raw/branch/main/Documents/O-ESD-03.pdf)
## 4. Design and prototype printed-circuit boards for all candidate solutions
All considered solutions are prototyped. Since some candidate solutions share some components or parts, PCBs/protypes are made for functional parts that can be mixed and matched between O-ESD solutions. For all considered parts that have PCB, gerber and drill files (needed for the production) are given. The photos of prototypes, functional parts and considered components are provided, too.<br>
All considered solutions are prototyped. Since some candidate solutions share some components or parts, PCBs/prototypes are made for functional parts that can be mixed and matched between O-ESD solutions. For all considered parts that have PCB, Gerber and drill files (needed for the production) are given. The photos of prototypes, functional parts and considered components are provided, too.<br>
[Snapshot of current hardware development](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development)
## 5. Prototype assembly (v0.1) and microcontroller software
Three prototypes are assembled (v0.1). [Prototype photos](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/Prototypes).<br>
Microcontrollers are tested on ESD. [Report, photos and codes for ESD testing of microcontrollers](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/3-Controllers/ESD_testing).<br>
Software for microcontrollers for user interface is written. [Software for user-interface](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Software_development).<br>
Based on testing results: new double cascade is designed in KiCAD, PCB for flyback and push-pull is designed in KiCAD, new trafos are designed and assembled and DC/DC converters and battery chargers in power supply are considered.<br>
Software for microcontrollers for the user interface is written. [Software for user-interface](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Software_development).<br>
Based on testing results: new double cascade is designed in KiCAD, PCB for flyback and push-pull is designed in KiCAD, new trafos are designed and assembled and DC/DC converters and battery chargers in the power supply are considered.<br>
## 6. Performance assessments and prototypes v0.2
Assessments of technical performances of O-ESD prototypes v0.1 are done and results can be found at [Assessment results v0.1](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/Measurements/v01).<br>
Assessments of technical performances of O-ESD prototypes v0.1 are done and results can be found in [Assessment results v0.1](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/Measurements/v01).<br>
In accordance with measurement results the shapers are redesigned. [Redesigned shapers](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/5-Shapers)<br>
[Design decisions](https://o-esd.etf.bg.ac.rs/forgejo/dragan.olcan/O-ESD/src/branch/main/Hardware_development/Measurements/v01/Design_decisions.txt) are made for the O-ESD.<br>