Our top pick for a through-hole ADC! It's super easy to connect to the Raspberry Pi and communicates via SPI. You can add up to eight 10-bit analog channels to your projects. The MCP3008 has a successive approximation register (SAR) architecture and an industry-standard SPI serial interface. It offers 200k samples per second, 8 input channels, and low power consumption (5nA typical standby, 425µA typical active). Key features include 10-bit resolution, eight single-ended channels, an SPI interface, a 200 ksps sample rate at 5V, and a -40 to +85°C temperature range. It's great for connecting to Raspberry Pi.

Using this ADC is simple. First, connect it to your Raspberry Pi as it's easy to hook up. Make sure to keep it within the -40 to +85°C temperature range. Since it has low power consumption, it won't drain your power source quickly. When adding analog channels to your projects, note that you can add up to eight 10-bit analog channels. There's no need for any special maintenance. Just keep it clean and dry. And always double - check the connections to ensure stable communication via the SPI interface.