Saturday, March 25, 2017

E-Ink Table Clock and indoor ,Outdoor Temperatur Monitor With PIC32MX

This is an follow up For the previous post in which i demonstrated how you can drive kindle E-ink display with a microcontroller. 

previously i was using a MSP430FR5739 , which is really low power mcu but has very little RAM and a bit low speed to do anything related graphical on it.E-ink has 800x600 pixel resolution so it required minimum 60Kbyte of RAM to store Frame Buffer. although you can easily getaway without frame buffer by directly doing incremental drawing on to screen but there are few issue in that because of the way E-ink display works. one more issue with there with MSP430 , it has very low program memory so we need some sort of external memory to store font data and icons. 

so i have decided to use PIC32 microcontroller , PIC32MX795F512H to be exact. which has enough of ram and flash  can go up to 80Mhz. which is more than enough for our purposes. 

Thursday, March 16, 2017

Simple Kindle E-ink Display Driver with MSP430

i have trying to get Kindle 6 inch e-ink display to work with Microcontroller quite some time because i really like the way e-ink display looks. Although many people have done it before but for some reasons there code was not working for me.  i have already tired with a my WireFrame FPGA Board but failed for unknown reason.  So i decided to give it try i designed a new board to give it Second Shot and i finally managed to get it "work" . this time i am using MSP430FR5739 microcontroller for no particular reason. i just needed a part so i used MSP430FR5739 Because i have used this before in my solar LED project.

This this just quick demo of concept to test if i got waveforms right. as MSP430FR5739 is quite slow and does have only 1KB of sram ,Controlling a 800x600 pixel display is really  pain. so i will use some powerfull microcontroller to display rich graphical content on this display.

Sunday, March 5, 2017

Low Power Outdoor Wireless Temperature Sensor with MSP430 NRF24F01+ DS18B20 , 6 month Battery Life on Single 1200mAh li-Ion

In this post i am going to quickly describe , how to make really low power Wireless Temperature sensor for Outdoor Temperatur Monitoring. Though in this demonstration i am only having Temperature sensor but in theory you can have any type of sensor connected to processor and get in transmitted over RF.