Component	Type	Note	Marking
nRF52840	SoC	Main SoC, 1MB Flash, 256KB RAM	U1
ESP8266	WiFi SoC	2MB external Flash, running AT firmware	IC8
Quectel BG95-M3	LTE Modem with GPS	USB exposed to debug pads	M1
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
TPL5010	Watchdog	needs to be fed	IC4
Unspecified Pressure Sensor	Pressure Sensor	-	IC5
Red LED	LED	-	LED1
Green LED	LED	-	LED2
Button	Push Button	Wakes the device power off	SW1

What we know about the pins of the nRF52840 so far:

Pin	Description
0	!LED Green
1	!RED Green
2	Power Latch - High Z * High -> Stay on -> Low hard power off
4	CS ACCL 2 ?
6	CS ACCL 1 ?
8	MISO?
9	TPL5010 Wake input
10	TPL5010 Done output
12	SPI CLK ?
13	SCL
15	SDA
17	Modem Rxd GPIO ?
22	Modem Txd GPIO ?
29	Modem + ESP power, switches the actual rail
32	Uart logging Rxd (broken out gpio)
33	Uart logging Txd (broken out gpio)
34	Modem !pwrkey
41	MOSI ?
42	Wifi Rxd ? Baud 115200
43	Wifi Txd ? Baud 115200
45	ESP power pin