Over on element14, Katie had actually been wanting to choose a short bike trip after ultimately getting it dealt with. She ran into a trouble: the formerly mounted speedometer had shed its screen unit, suggesting the entire point was now worthless. As opposed to simply purchasing a new one, she had the concept to assemble a DIY variation that counts on GPS rather than counting wheel rotations to keep an eye on the current rate..
Component-wise, just a few components were called for to develop this gadget. Was an Arduino Nano 33 IoT that handled interaction as well as power in between the display and GPS module. Next was a GPS3 Click Board, which contains one of Quectel’s L80 GPS modules that offers exact monitoring information in a tiny form aspect. A small 1.3″ round LCD was chosen due to its pixel density, integrated touch controller, and also ease-of-use. Every little thing was set up into a custom-designed as well as 3D-printed housing that fits nicely over the bike’s handlebars as well as features an area to save a USB battery bank.
With the equipment finished, Katie relocated onto the programs. The application starts by initializing the LCD and also GPS components over serial, where it after that moves into an infinite loop that look for brand-new positional data. If there is something to update, the 4D Systems genieArduino display things obtains this most recent info and updates the screen’s graphics appropriately.
To read more about how the speedometer was constructed, you can visit Katie’s e14 Community post here.