Force Gauge

• ESP32 based Force Gauge - Aiming to help rock climbing specific training (finger excercises)
• Real time plotting via wifi Webapp/Android app

Pictures

Forcegauge with fingerboard

First prototypes

Hardware

Main parts

• ESP32-C3 MCU
• 3 buttons
• OLED screen 0.96" SSD1306
• Battery with charger
• USB UART connection
• HX711 ADC - Load cell

Schematic

• Schematic

PCB

Pictures of the PCB:

Interactive BOM

• Interactive BOM

Software

Firmware

• Arudino IDE - Some lagging issues due to limitations of arduino environment
• Started wokring on firmware with ESP-IDF which supports multitasking
• Added Bluetooth support to come up as a Tindeq Progressor bluetooth device (https://tindeq.com/product/progressor) (CChange Bluetooth and restart device, WIFI wont work when BT is on)
• Added Bluetooth support to come up as a Climbro bluetooth device (https://climbro.com/) (Change Bluetooth settings and restart device, WIFI wont work when BT is on)

Flutter based app (Tested on Android)

• Available on Google play: https://play.google.com/store/apps/details?id=com.github.szbeni.forcegauge
• Real time plotting
• Built in tabata timer (Based on https://github.com/insin/tabata_timer)
• Record history of traning

Webapp

• Simple webapp served from a HTTP server