CG Scale Mods

thingiverse

This is a couple of modifications to a pretty cool load cell RC glider center of gravity project found here: https://github.com/olkal/CG_scaleI I have added an LCD case for the 16x2 Arduino I2C LCD, also wrote a new codebase for the I2C module only, using a different method of calculating CG that is more readable and slightly more accurate. Note that real life models will not notice this change. The voltage measurement is critical, displaying it when the voltage gets lower ensures accuracy in load cells if your battery does not run low. A discreet switch was added to change the display between grams and mm, to pounds and inches. A 10mmx2mm magnet was attached to one frame cover and the LCD case so that the LCD can stay attached to the frame cover. The pins used can be found in the Arduino sketch, but for the Switch it is a Ground and pin 5 since I initialized it to a pull-up, the switch connects it to ground. The I2C LCD has the clk on pin A5 and data on pin A4. My Sketch: https://create.arduino.cc/editor/jfint/3a0543d0-8299-4714-bd06-5559195e77c5/preview Switch: https://www.amazon.com/gp/product/B01NCWA5VY/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1 Magnet: https://www.amazon.com/gp/product/B07D9JFX14/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1