I have an idea for a battery powered wearable so i thought i better try a proof of concept for the screen before i whip it up in Altium before i realise it wont fly…
Needs to run NETMF 4.3
Battery powered (Lipo)
BLE
RTC
Capacitive touch
And a screen of some sort…
So here’s a Microbe.Net running NETMF 4.3 at 84mhz off a single AAA driving a DFRobot 128x64 OLED module over I2C…
Happy enough with the results so look out Agent here comes iWatch.Net :whistle:
@ Justin:
Looks great!
Could I read the screen if I were out in the sun or is it just designed for England?
What is the battery life?
Rocky
@ rockybooth - I wouldn’t want to use this one in anything stronger than the the minuscule Lux output from the orange English orb…
But i do have a small fancy Sharp memory LCD on order which will laugh at the San Diego sunshine 
I have some ideas on battery life so it should be ok…
@ Justin - Awesome work! What part is “capacitive touch”?
That is cool.
Did you measure the current drawn ?
@ munderhill - Cap touch is not here, but i have it tested and running on another board…
@ Rajesh - haven’t bothered on this board as the final design will run a single cell Lipo
I have a another board running the same STM, Cap touc, some LED’s and sending data via BLE every second which lasted ~ 3hrs on a single cell 40mah Lipo
The idea on this is to run something like a 110mah lipo with some battery saving strategies so it should last pretty well…
Nice!
Can you elaborate on the Sharp LCD you were thinking of using. I was looking for one that could be used in the sun as well.
@ khalilm - i have used these with NETMF SLOT365 : Link Daftar Situs Judi Slot Gacor Terbaik, Ribuan Game Online Slot Terbaru
@ rockybooth has seen the results first hand in direct Californian sunshine so he can give feedback…
They have a small one that will work well from smaller projects…
@ khalilm: The Sharp display is sharp in full sunlight! It is monochrome, and refreshes quite quickly. Justin posted a video at
These are available at Mouser PN 852-lS027B7DH01
Thanks guys. I will definitely check that out.
For some reason the embedded video does not work but the link does.