Raspberry Pi Pico with 4 ICs
Raspberry Pi Pico with 4 ICs for extra input/output connections and some direct connections, along with a user interface and Fram.

4 ICs break out board with extra connections and some direct connections to Raspberry Pi Pico MCU.
Enclosed is a photo of my Pico W breakout board. It has the following:
- RTC (Optional)
- Fram (Optional)
- Oled Screen
- Rotary encoder
- Pico W (Wifi) (Optionally replace Pico with Pico W
- Pot
- Reset button
- General purpose button
- Tx/Rx
- I2C
- SD reader
- (Optional) SD reader housing that fits into a circular hole of minimum size around the reader unit; not shown.
- USB serial capable
- Secure connections
- Power USB or 5V (between 1.8V and 5.5V power pack)
- If Cellular power between VBUS 5V-5.5V, VSYS 3.7V-4.2V
- The 4 chips do digital in, digital out, analog in and optocoupler o/c outputs.
The variety of components makes this a flexible unit and the sample program makes it easy to get started.
- MCU units with sensors and datalogging.
- Break out boards with user interface. Suitable for datalogging and interactive function including stepper motors.
- Break out board customizations. Sensors, stepper motors, WiFi, SD cards and Fram.
- Design of circuit boards, including design of circuit boards that are a customization of a break out board pilot project.
- WiFi and server collection of data.