From ead184f3a6bca863dc2ed3bc79151c1d479b49a2 Mon Sep 17 00:00:00 2001 From: Jonas Niesner Date: Sun, 6 Jul 2025 21:47:07 +0200 Subject: [PATCH] Update README.md --- README.md | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/README.md b/README.md index 2de0ccb..453dacb 100644 --- a/README.md +++ b/README.md @@ -1,9 +1,13 @@ # HGD4_reversed -Information about the LOCO Track Primary HGD4 GPS tracker +Custom firmware and information for the LOCO Track Primary HGD4 GPS tracker ![pinout](https://github.com/jonasniesner/HGD4_reversed/blob/main/pinout.webp?raw=true) -The following tables where reversed from the hardware version 1.1, we know of the following version 1.1 1.4 1.6 1.6a. The other versions still have to be reversed properly. +To get startet, connect a jlink programmer to GND and SWDIO and SWCLK pins. Then connect a 5-6V power supply or battery to the battery port and press the power button. +After that you can upload the NRF firmware part. The esp does not need custom firmware at the moment. +You will most likely have to replace the sim card and adjust the config for it and the backend server you intend to use. + +The following tables where mainly reversed from the hardware version 1.1, we know of the following version 1.1 1.4 1.6 1.6a. All of those versions should be compatible | Component | Type | Note | Marking | @@ -14,9 +18,10 @@ The following tables where reversed from the hardware version 1.1, we know of th | LIS3DH | Acceleration Sensor | Two units present | U2 | | LIS3DH | Acceleration Sensor | Two units present | U3 | | VEML6035 | Light Sensor | Next to push button, used for wake-up | IC7 | -| ENS210 | Temperature + Humidity Sensor | - | IC3 | +| ENS210 | Temperature + Humidity Sensor | only on hw version 1.1 and 1.4 | IC3 | | TPL5010 | Watchdog | needs to be fed | IC4 | -| LPS22HB | Pressure Sensor | - | IC5 | +| LPS22HB | Pressure Sensor | only on hw version 1.1 and 1.4 | IC5 | +| ENS220 | Pressure Sensor | only on hw version 1.6 and 1.6a | IC5 | | Red LED | LED | - | LED1 | | Green LED | LED | - | LED2 | | Button | Push Button | Wakes the device power off | SW1 |