In an upcoming project I need a micro controller that operates: 1x 16-bit DAC (SPI); 1x 24-bit ADC (SPI); 1x 8-bit parallel LCD; 1x rotary encoder; 1x PWM fan; 1x fan tachometer; 1x…
Tutorial: 3.3V hacking for Arduino Nano
Hey I’m writing my first tutorial 🙂 During my recent OLED testing I wrote the software using Arduino Pro Mini 3.3 – the only Arduino board with 3.3V I/O (Lilipad may be the…
Poorman’s OLED test jig
During last (Chinese) year end shopping frenzy I grabbed some OLED display panels, hoping to boost the presentation of my projects. The panel model is UG-2864ASGGG14, made by “WiseChip Semiconductor Inc.” in Taiwan. Unlike typical…
MF70 CNC PCB milling
During a recent shopping mania I grabbed some old AMOLED screens at very cheap price. The seller is an electronics hobbyist. He is kind enough to provide an adaptor board that generates…
Saleae Logic PWM generator
In a recent project I need a 3.3V PWM signal generator. Initially I think the fastest way to do it is using an Arduino and write a simple program with analogWrite() function….
MF70 CNC
A while ago in “Manual PCB milling” I revealed my plan about Proxxon micro-mill MF70 CNC conversion. After months of assembling, tear down and re-assembling, the first working system is up. I…
Mobile charger mini review
Mobile charger has become one of the most popular accessories/consumables for smart-phone (thanks to Apple’s non-removable battery design). Being a heavy mobile internet user, I have accumulated several mobile chargers, ranging from…
Manual PCB milling
I always admire those hobbyists having a machinery workshop in their garage. But living in Singapore government housing basically deprived me of any wild wishes of having my own. It is not…
The battle against moisture
Singapore, a tiny little island at the tip of Malay peninsula, is probably one of the world’s most humid country. The average relative humidity (RH) level is 84.2% according to NEA, with…
A pilgrim trip to Singapore Mini Maker Faire 2012
Maker Faire to me was a carnival to enjoy on the web. Being mostly held in the US area, I’m simply denied the luxury of attending it. So when I received a news letter…