Recoil:Taggers

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PCB

Both the RK45 and SR12 use the same nRF52832-QFAB based SoC, while both examples devices had differing board revisions both had identical connector pinouts and near identical component placement. Of notable difference was the addition of a 2200uf capacitor attached to the RK45s board plugged into the X1 pin header.

nRF52832 datasheet

pins are counted from the antenna end of the board.

X1 SWD

  • 1 - GND
  • 2 - V3.3
  • 3 - SWDIO
  • 4 - SWDCLK

X2 Ext Sensor and IR emitters

  • 1 - GND Ext jack
  • 2 - NC (extra IO) - p0.28 (pulled high, unwired input, activation bit 2 of the upper nibble of byte 02, counter in the first nibble of byte 05 )
  • 3 - NC (extra IO) - p0.29 (pulled low, no noticeable change in telemetry when brought high, no hit detection when connected to ext jack data line, voltage pulse when trigger activated, likely unwired output)
  • 4 - Sensor Data Ext Jack - p0.30
  • 5 - Anode of cone IR LED
  • 6 - Common sink (Cathode) of both IR emitters
  • 7 - Anode of focused Emitter
  • 8 - V3.3 Ext Jack

X3

  • 1 - Muzzle red LED
  • 2 - Vbat - Muzzle red LED
  • 3 - power button sink
  • 4 - power LED sink (Cathode)
  • 5 - Vbat (in the sr12 this is NC as they get Vbat directly off the battery pack, in the RK45 it is connected to the power button/led board)
  • 6 - Vbat (NC on both RK45 and sr12)

X4 Switches

  • 1 - GND for trigger
  • 2 - GND for reload
  • 3 - GND for ppt
  • 4 - trigger - p0.12
  • 5 - NC (pulled high when brought low activates chip reset) - p0.21
  • 6 - reload - p0.11
  • 7 - ppt - p0.23

X5 internal sensors

  • 1 - GND
  • 2 - V3.3
  • 3 - data left - p0.20
  • 4 - GND
  • 5 - V3.3
  • 6 - data front - p0.19
  • 7 - GND
  • 8 - V3.3
  • 9 - data right - p0.18

J1 - Power

  • 1 - GND (left pin)
  • 2 - Vbat (right pin)

J2 - Recoil Motor

  • 1 - Sink (-)
  • 2 - Vbat (+)

power draws

fluke 179
rk45 current draws, 95% fresh energizer insustreal cells
start v 5.900 end 5.835 set to auto min/max max observed value listed
off: 0.001
on: 0.014
ext sensor added 0.001
connected: 0.015
receving tag: 0.016
TX nr idnc : 0.095
TX nr odnc : 0.500
TX nr odwc : 0.950
TX rc idnc : 1.275
TX rc odnc : 1.435
TX rc odwc : 1.538