This week I built this magnetic heading indicator with a card compass style. I'm using an ESP32-S3 Supermini board with GC9A01 round display to show the compass UI from a three-axis magnetometer sensor reading.
Here is the previous version of this project
Parts required:
1. ESP32 S3 Supermini
2. 1.28" GC9A01 display
AliExpress➡️ Buy option 1 Buy option 2
3. QMC5883P magnetometer (GY-271 module)
(Note: This project is based on QMC5883P not HMC5883L)
4. Lipo battery 3.7v
Source Code:
I've uploaded the source code (both v1 and v2) and calibration code in my drive
Note: Before you upload and run into an error make sure you-
Download all required libraries :
i) lvgl (Only use v8.3.11)
i) lvgl (Only use v8.3.11)
ii) LovyanGFX
iii) Adafruit_QMC5883P
Use Arduino IDE v2.3.4 and esp32 board v3.x.x by espressif
Please upload the calibration code and from the serial monitor you can get the offset values after calibration. Use those values inside the compass code for accuracy.
If you face any issue send me an email with subject "compass" to abid.business01@gmail.com
Hi,
ReplyDeleteTo protect the battery during charging and discharging, would it be safer to include a charge controller like this one in your circuit?
https://www.aliexpress.com/item/1005007176376691.html?spm=a2g0o.order_list.order_list_main.305.13c95e5bmqIOcy
Thank you!
Have a nice day!
The battery I've used has a protection circuit built in. It will prevent over discharge. And the LTH7 used in the esp32 board will safely charge it.
DeleteI had a slight doubt, but I wasn't sure.
ReplyDeleteThank you for your feedback!