Pinout of Tradfri Zigbee module
I have mapped the pinout for the Zigbee module used in the bulbs,5-button remote and, PIR sensor:
I think the CPU is EFR32MG1P132F256GM32, this is a Cortex-M4 with 2.4Ghz ISM band TX/RX.
Teardown of a ikea trådfri bulb (LED1623G12)
Teardown of a Ikea Trådfri bulb. Steps performed to take out the electronics: To remove the sphere i cut the plastic just where the base starts. Next step is to remove the LED ring on the aluminium PCB, just desolder the two tabs and remove screws. Next step is a little bit harder, here i used a vice and deformed the base to get the "heat spreader" off The E27 cap was removed by cutting the cap and use a plier. The electronics with the potting compound can be removed from base by using a vice again to deform base. Remove the potting compound is relative easy, it have a structure of dried clay and a removable type. Now the PCB is clean The lamp seems fine from a electronic and heat perspective. All electrolytic capacitor is marked 130°C and the casting compound is probably to spread heat to base aluminium case and electronic isolation. The led ring is two serie connected strips of 9 leds each. The Aluminium PCB also has heating compound between the PCB
https://www.silabs.com/documents/public/data-sheets/efr32mg1-datasheet.pdf
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