Serial Pi Zero

Name: Serial Pi Zero
Brand: AB Electronics UK
SKU: SerialPiZero
Price: 8.4900 GDP
Availability: InStock
Rating: 5 (1 reviews)

Installed on a Raspberry Pi with optional mounting kits

Video

£8.49 each (including VAT: £10.19)

Product Code:SerialPiZero

EAN:7426787870200

72 in stock to order today.

RS232 Master Port.
Control the Raspberry Pi Zero over RS232 or connect to external serial accessories.
Stackable with other Raspberry Pi accessory boards.
Mounting holes for use with the AB Electronics UK mounting kits (sold separately)

The Serial Pi Zero is a communication board supporting the RS232 serial protocol.

The RS232 port is connected to the UART port on the Raspberry Pi using a MAX3232 interface. The MAX3232 IC converts the 3.3V UART port to RS232 voltages allowing communication with RS232 compatible devices over a DB9 serial cable or with the use of a null-modem cable the board allows terminal access with linux on the Raspberry Pi using a terminal application. The RS232 port can be accessed through the DB9 port or the solder points on the PCB.

An array of 2.54mm pitch holes with 3.3V and 5V connections are also provided on the PCB allowing you to build additional circuits on the board.

Please note that you can only use one Serial Pi board on a Raspberry Pi. if stacking with other boards we recommend putting the Serial pi at the top of the stack due to the height of the DB9 connector.

*You need to use the Raspbian Jessie release or later and disable the built in Bluetooth to use the Serial Pi Zero on the Raspberry Pi 3 or Raspberry Pi Zero W, see our KB page for the config changes needed.

Compatibility

We have tested the Serial Pi Zero on the following platforms.

Model	Status
Raspberry Pi Model A / B
Raspberry Pi 1 Model A+ / B+
Raspberry Pi 2 Model B
Raspberry Pi 3 Model A+ / B / B+
Raspberry Pi 4 Model B
Raspberry Pi Zero
Raspberry Pi Zero W / Zero 2 W
Raspberry Pi Compute Module 4 IO Board
Orange Pi
Asus Tinker Board
Odroid

*You need to use the latest Raspberry Pi OS release and disable the built in Bluetooth to use the Serial Pi Zero on the Raspberry Pi 3, 3+ and 4, see our KB page for the config changes needed.

Datasheets

Ti MAX3232E

Knowledge Base Articles

Serial Pi

Serial Port setup in Raspberry Pi OS

I2C, SMBus and Armbian Linux

Specifications

Input Ratings & Specifications

Spec: Ratings
Supply Voltage: 3.3V to 5.5V
Logic Voltage at UART Port: 3.3V
Maximum Data Rate: 250 kbits/s
RS232 Input voltage range: -25V to +25V
RS232 Output voltage range: -13.2V to +13.2V

3D CAD Model

Serial Pi Zero - 3D CAD File (STEP Format)

Schematic

Click to download schematic PDF.

Mechanical Drawings

Serial Pi Zero

£8.49 each (including VAT: £10.19)

Assembly

The Serial Pi Zero is supplied with the 40 pin GPIO connector and the DB9 connector unsoldered.

Before using the Serial Pi Zero you will need to solder both connectors onto the PCB. We suggest soldering the 40 pin GPIO connector first and then the DB9 connector.

To make assembly easier we have designed a PCB header assembly jig which you can download and print.

Watch the assembly video for the Serial Pi Plus which uses the same assembly steps as the Serial Pi Zero.

PCB Header Assembly Jig

Download and print our PCB Header Assembly Jig to hold your circuit board when soldering the header pins.

RS232 Port

The pin-out connections for the RS232 port are shown below:

Pin	Usage
1	N/C
2	RX (data receive)
3	TX (data transmit)
4	N/C
5	Ground
6	N/C
7	N/C
8	N/C
9	N/C

DB9 connector as viewed from the front of the Serial Pi Plus

Using the RS232 port for terminal connections

The RS232 port can be used for remote terminal connections on the Raspberry Pi allowing remote access and control without the need for an ethernet connection. In order to connect the Serial Pi to a desktop computer you will need to use a Null-Modem cable. A wiring diagram for making a Null-Modem cable can be found below. For details on configuring the RS232 communication on the Raspberry Pi visit our knowledge base.

Null-Modem Cable

Null modem wiring diagram

Connector 1	Connector 2	Function
2	3	Rx ← Tx
3	2	Tx → Rx
5	5	Ground

This development board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by abelectronics.co.uk to be a finished end-product fit for general consumer use. As such, the goods being provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety and environmental measures typically found in end products that incorporate such semiconductor components or circuit boards. Persons handling the product(s) must have electronics training and observe good engineering practice standards. This development board/kit does not fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives or other related directives. Note: documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view, download Adobe Acrobat Reader or other PDF reading software for your computer or mobile device.

Serial Pi Zero

Compatibility

Datasheets

Knowledge Base Articles

Tags

Serial Pi Zero

Specifications

Input Ratings & Specifications

3D CAD Model

Schematic

Mechanical Drawings

Serial Pi Zero

Assembly

PCB Header Assembly Jig

RS232 Port

Using the RS232 port for terminal connections

Null-Modem Cable

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Important Information