01 04 2018 - update: and here is Kolban's book on ESP32
This year, many new ESP32 boards appeared on the market. Today Andreas Spiess reviewed 10 different boards which have a battery connection, but no display. All results are assembled in a comparison table, but maybe you watch the video for the explanations, which might help you to understand the consequences of a particular choice, or at least to assess if you can trust the findings.
As usual, he found significant differences between the boards which can influence your buying decisions.
These are the contenders:
- The WMOS with a 18650 battery holder
- The LOLIN32 Wemos board
- The long TTGO board
- The short TTGO Mini board with double pin rows
- The TTGO Pico board
- The LOLIN32 Pro Python board. I replaced Python fir this test
- The Lolin Lite board
- The Higrow flower sensor board
- The Wemos Pro board
- The FireBeetle board
- And the Bare ESPon a PCB as a comparison for current consumption
These are the criteria:
- Does the board use a shielded module or just a chip soldered on the PCB?
- How many pins are broken out to pin headers?
- Does the board come with an antenna connector for an external antenna?
- Is the board breadboard friendly?
- How clear is the pin labeling?
- Does the board have an additional “flash” button?
- Is a battery switch available?
- Which battery connector do you need?
- Does the board crash if you disconnect USB?
- What type of voltage regulator and LiPo management chips are used?
- How much current does the board consume?