l’Otomate is an open-source greenhouse automation controller developed by and for members of the CAPÉ (Coopérative pour l’agriculture de proximité écologique). Designed for small to large farms, it enables automated control of greenhouse environments at a fraction of commercial costs. Key features include programmable temperature schedules, independent control of sidewall motors, and management of up to two ventilation systems and two furnaces. The system supports DS18B20 temperature sensors and a DS3231 real-time clock module. Comprehensive documentation, including code, schematics, and design plans, is available to facilitate construction and deployment.