National junior solar sprint 2014

Yesterday, I had a chance to join in the “National junior solar sprint” organized by Singapore Polytechnic for secondary students in Singapore. The theme of the competition is “Sun seeker”, which is actually a small solar car race. The competition was held with purpose to create a playground for students to apply their knowledge and creation into a real thing.

National junior solar sprint 2014

National junior solar sprint 2014

Read More →

F0-pins

In many microcontroller applications, you may need to read and write data from and to outside devices through I2C, SPI, USART or ADC… peripherals. When you do this using processor – you will waste a significant amount of processing time, especially for some applications that require transferring a huge data. In order to avoid occupying CPU, most advanced microcontrollers nowadays have Direct memory Access (DMA) unit. This unit does data transfers between memory locations without the need of CPU processing. In this post, I will take STM32 DMA as an example to show the advantages of using DMA over normal transferring method.

Read More →