Development Boards & Modules
ESP32 and ATmega32U4 development boards, a Nano screw terminal shield, OLED and 7-segment displays, and a solderless breadboard to build it all on.
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Choosing a development board
| Board | Best for | Connectivity | Logic |
|---|---|---|---|
| ESP32 DevKitC 38 pin | Wi-Fi and Bluetooth projects, print farm monitoring, home automation | Wi-Fi, Bluetooth, USB-C | 3.3V |
| Pro Micro ATmega32U4 | Keyboards, macro pads, USB controllers | Native USB-C | 5V |
| Nano V3 expansion board | Permanent installs with a Nano, no soldering | Screw terminals, DC jack | 5V |
Displays
The 0.91 inch OLED needs only four wires over I2C and runs on the Adafruit SSD1306 and U8g2 libraries. The 0.56 inch 7-segment display comes in common anode and common cathode, so match it to your driver: common cathode for direct drive from microcontroller pins, common anode for most driver ICs.
Prototyping
The 400 tie point breadboard fits beside an Arduino Uno or inside a small enclosure. Pair it with 22AWG solid hook-up wire and Dupont jumpers from our connectors range.
Buying electronic parts from OzFDM
Every part is sold individually, so you can pick up two resistors or two hundred without buying a kit full of values you will never use. Orders ship from our Bibra Lake store in Perth, and orders over $299 ship free Australia-wide (excluding PO Boxes).
Development board FAQs
Can I power 5V sensors from the ESP32?
The 5V (VIN) pin passes through USB power, so 5V sensors can run from it, but the ESP32 GPIO pins are 3.3V and not 5V tolerant. Use a level shifter or a voltage divider on any 5V signal going into the board.
Does the Nano expansion board include a Nano?
No. It is the screw terminal shield only. Any Nano V3 compatible board plugs into its headers.
Which display library should I use for the OLED?
Adafruit SSD1306 with Adafruit GFX is the easiest start in the Arduino IDE. U8g2 uses less memory and has more fonts. Both support 128x32 at I2C address 0x3C.