All pins are soldered as shown in the photos.
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| Microcontroller | ATmega328 |
| Operating Voltage (logic level) | 5 V |
| Input Voltage (recommended) | 7-12 V |
| Input Voltage (limits) | 6-20 V |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| Analog Input Pins | 8 |
| Dimensions | 0.73" x 1.70" |
| Length | 45 mm |
| Width |