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BackEspressif esp8266ex 2.4 GHz Wi-Fi and Bluetooth combo chip Single 2.4 GHz Bluetooth ble zigbee 802.15.4 flash crypto ATSAMR21G18 AT45DB041E TECC508A U.Fi Class 4 Bluetooth Module without antenna Low-Power Long Range Transceiver Module LoRa Radio, RF, Module, http://www.hoperf.com/upload/rf/RFM69HW-V1.3.pdf 8 pin DIP socket | | J9 | 1 | B10k | \*\*Potentiometer, 16 mm vertical board mount | | | | | | | R20, R22 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92
- -9.565244e-01 1.746217e-03 -2.916470e-01 vertex -1.043254e+02 9.695134e+01.
- Holder 2xAA cell battery.