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Hardware

Open it from the top first.

  • Casing with a speaker in the top part
  • Battery LiPo 604060 3.7V 7.4Wh 2000mAh
  • a NanoPi NEO V1.4 PCB

  • an antenna PCB
    • aspect quite similar to RDV4 antennas
    • red LED visible through PCB
    • ICOPY-X 20200828
    • LF_ANT_345uH±5%
    • HF_ANT_1.9uH±3%
    • Dual ANT V6.1.4
    • Center Freq:125K&13.56M

  • a green multi-function PCB
    • ICOPY MAIN V1.5 D-2110
    • Proxmark3
    • USB-C and battery management
    • Speaker driver
    • LCD 1.3'' BL-​133H01B Driver:ST7789 240x240 4-line SPI
      • Seems it can be driven by the STM32 and by the NanoPi
    • Inputs driver
    • STM32F103C8T6, still to figure out

Manual BoM

This is an ongoing short BoM of the ICs started from visual inspection of the PCBs.

Visual ID Package #Pins Reference Description
701 SOT-6 6 ? ?
8C7I5 USON2x3 8 W25Q80BLUXIG Flash 8Mbit SPI
A7 SOT23 3 BAV99 fast switching diode (2 diodes)
BZS 18I A11L ? 6 TPS61170DRVR 1.2A Switch, High Voltage Boost Converter in 2x2mm QFN Package
C55 SOT-23-6 6 OPA355NA 2.5V, 200MHz GBW, CMOS Single Op Amp With Shutdown
C7F DCK-6 SOT-23-6 6 SN74LVC2G17DCKR Dual Schmitt-Trigger Buffer
DL8a SOT-25 5 XC9236B38DMR PWM/PFM, step-down, 3.8V±2%, 600mA, 3MHz, Vin>2V, HSST, CL
GS8722 TE29BA MSOP8 8 GS8722 11MHZ CMOS Rail-to-Rail IO Opamps (2 opamps)
IP5305 ? ? IP5305 Fully-integrated power bank System-On-Chip with 1.2A charger, 1.0A boost converter
JS SOD232 2 ? high voltage switching diode
K318 BGA ? Audio Amplifier Code Chip K318 for Redmi 4A Ringing IC Redmi NOTE 4X
ODT SC-70-5 5 TLV70012DCKT 200mA, Low IQ, Low Dropout Regulator for Portables
QTP SC-70-5 5 TLV70025DCKT 200mA, Low IQ, Low Dropout Regulator for Portables
RS2105 MS26102 MSOP-10 10 RS2105 Ultra Low ON-Resistance, Low Voltage, Dual, SPDT Analog Switch
RS2299 QJ3D139 QFN-3x3-16L 16 RS2299 4.5Ω Quad SPDT Analog Switch 4-Channel 2:1 Multiplexer – Demultiplexer With Two Controls
Y5510 78T A1JH TSSOP24 24 TLC5510IPW 8-Bit, 20 MSPS ADC Single Ch., Internal S&H, Low Power
X1ZX 1S ??

Interconnections

Green PCB <> NanoPi NEO

NanoPi 20 & 24-pin headers

Actually only 14 pins are used:

NanoPi NEO Pm3 ARM7 STM32 Misc Comment
USB1.DM1 56 - DDM USB D-
USB1.DP1 57 - DDP USB D+
SPI0.CS LED? ?
SPI0.MOSI0 LED? ?
SPI0.MISO0 LED? ?
SPI0.CLK0 LED? ?
UART0.TX pin31 ?
UART0.RX pin30 ?
LL Audio amp -> speaker lineout left
GND *2
5V ?
5Vout ?
PA1/UART2.RX ?

4-pin FPC

For USB connection with the host via the USB-C connector on the green PCB, wired to the NanoPi NEO Micro USB footprint.

Green PCB NanoPi NEO MicroUSB Comments
Shield GND
1 GND
4 2 CC/ID
2 3 D+
3 4 D-
1 5 VBus (*)

(*) Not directly the VBus of USB-C, it goes via some regulator

Antenna PCB <> Green PCB

Connected via a 8-pin FPC

Proxmark3

  • AT91SAM7S512
    • JTAG not routed
    • JTAG disabled
  • with another unlabeled FPGA, possibly a Spartan 3
  • External 256kb Flash
  • (no SIM slot)

STM32F103

See STM32F103 section.