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Quickstart Guide 

Pi-oT 2 Precision Series 

 
 
 
 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Content Overview 

Welcome to the Pi-oT family! Each Module 
contains the following- 

 

1x Pi-oT 2 Base Board & Enclosure 

 

2x 0.1” Spacers

 

 

2x Hex Standoffs 

 

4x Nylon Screws 

 

3x Short Self-tapping Screws 

 

4x Long Enclosure Lid Screws 

 

1x 5V fan 

 

2x 4-40x1/2 Pan Head Screws 

 

1x Ethernet Jumper Cable 

 

1x UPS Board (Optional). 

Step 1: Attaching Raspberry Pi and UPS 

 

Start by attaching your Raspberry Pi 4 to the 40 
Pin receptacle on the bottom of the base board. 
 

 

Once attached, slide the 2 0.1” Spacers between 

the Raspberry Pi and the Pi-oT 2 Baseboard as 
shown in Figure 1. 
 

 

Thirdly, insert 2 Nylon Screws through the Pi and 
secure to the Pi-oT Baseboard with 2 Hex 
Standoffs. 
 

 

If active cooling is needed, install the 5V fan with 
the 2 4-40 screws, and plug the fan into the 5V 
header in the top right of the board. 
 

 

Next, install the UPS Board onto the Pi-oT 2 
Baseboard by first aligning 2 mounting holes on 
the UPS Board with the 2 Hex Standoffs. This will 
ensure the 5 pin connector is properly aligned.  

CAUTION: If the UPS board is not properly 
connected, damage may occur to either board.

 

 

 

Once aligned properly and connected, the 
remaining 2 Nylon Screws can be used to secure 
the UPS Board to the Hex Standoffs. 
 

 

If ethernet connection is needed, connect the 

Raspberry Pi’s 

ethernet to the Pi-oT 2 Baseboard 

with the supplied Ethernet Jumper cable. Excess 
cable can be tucked under the assembly or 
above if needed. 

Figure 1: Inserting Spacers 

Figure 2: Baseboard Installed 

Summary of Contents for Precision Pi-oT 2

Page 1: ...d secure to the Pi oT Baseboard with 2 Hex Standoffs If active cooling is needed install the 5V fan with the 2 4 40 screws and plug the fan into the 5V header in the top right of the board Next install the UPS Board onto the Pi oT 2 Baseboard by first aligning 2 mounting holes on the UPS Board with the 2 Hex Standoffs This will ensure the 5 pin connector is properly aligned CAUTION If the UPS boar...

Page 2: ... is held High when Vin is present thus allowing the Module to power on when Vin is initially supplied The configuration of these two signals allows for the following logic to control the Module 1 The Raspberry Pi and UPS power on when Vin is first supplied 2 The GPIO pin 24 is held high via a python script or similar 3 GPIO pin 25 is used as an input to monitor for power failure 4 Once GPIO pin 25...

Page 3: ... use extreme care when configuring this device Once configured attach the Positive and GND leads to the screw terminals using a 3 Watt capable power supply Step 5 Interfacing the Raspberry Pi with the Pi oT 2 Baseboard The Pi oT 2 has 4 main IO groups 1 Digital Inputs 2 Digital Outputs 3 Analog Inputs 4 RS485 Digital Inputs The 4x 24 volt inputs are connected the GPIO pins 12 17 22 and 27 When int...

Page 4: ...on library The MCP3208 IC is also capable of operating in differential mode In this mode one channel is read relative to the value of a second channel For more information refer to the gpiozero documentation or the MCP3208 datasheet Note The AGND pin and GND are connected via a 40 Ohm resistor internal to the MCP3208 IC The best practice is to operate the Module and sensor on the same ground plane...

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