T- 22 Lab Day

By the way, Wai Yeung stayed overnight in my hostel the night before when me, Jianwen and Winston were staying up to watch the soccer match. I believe he had quite a fun time in my room, watching me doing webcam with Trini. It is smart of him to have brought along his toiletries and fresh set of clothes which he kept in his locker. So no worries of not being able to wash up if he worked overtime in the lab at night. Anyway borrowed a "sleeping mattress" from Jianwen for Wai Yeung to sleep on over the night. Hope he would not mind sleeping on it in my humble room XD

Morning woke up at 10.30am although i slept like 6am in the morning after watching the champion league match between Barcelona and Chelsea. Hehee again super impressed by the magical skills of Ronaldinho. Went for lecture at 11am lunched at 1pm then after that proceeded to my lab to do more testing. I was supposed to meet my Professor at 2.30pm in the lab.

1400h: Went to the PCB fabrication lab to look for Mr Jalil to pick up my PCB. Drilled the holes and filed the edges of my PCB board.

1420h: Went to the ECE mechnanical workshop to look for help to cut a rectangular hole in my PCB was "kindly" asked to solve the problem by myself. Therefore I went back to the PCB fabrication lab to drill a big hole and used a small needle file borrowed from Mr Jalil to file the edges.

1500h: Finally filing my first PCB board with the rectangular hole to fit my piezoignitor. My professor came and I showed him the waveforms of what I had obtained from the previous day.
Both of us were quite disappointed that the energy harvesting circuit is not able to power up the RF circuitry.

1530h: My professor asked me to try using a solar cell to develop a hybrid system to power the electronics. Did open circuit voltage testing of the photovoltaic cell with various light intensity.

1600h: Construct a test circuit linking the ouput DC voltage of the photovoltaic cell to a storage capacitor and regulate it at 5V using a linear regulator. Transmitter is able to function. Did a series of test to determine the minimum threshold light intensity for the DC regulator to operate and hence the RF electronics.

1645h: Got a 3phase system light bulb from Mr. Woo to determine the increase in open circuit voltage of the photovoltaic cell. Recorded the values and pack up.

End of a very gloomy day can really see no where my project is heading to...head sunken..

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Went back to PGP at about 8 plus heard there's a fire drill exercise but luckily not involving resisdents from my block. Went to Gerodies mart to stock up on some food and drink --- getting psyched-up again for the late soccer match tonight, this time Arsenal against Real Madrid. True enough it was a exciting performance played between the two sides although the nil-nil scoreline would have suggest otherwise. Hehehe had a fantastic time uhhhh-ing and ahhh-ing at the gasping misses throughout the match together with Jianwen and Winston. After the match ended i could hear the birds stirring in the nest as dawn is approaching. Maybe time for me to turn in to get some rest ahead of a new challenging day tomorrow.