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| projects:mees [2021/01/19 17:23] – created trimen | projects:mees [2022/01/11 20:07] (current) – [Used parts:] trimen | ||
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| =======MEES======= | =======MEES======= | ||
| (MQTT enabled environmental sensor) | (MQTT enabled environmental sensor) | ||
| + | {{: | ||
| =====About===== | =====About===== | ||
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| CSS811 - TVOC and eCO2 sensor\\ | CSS811 - TVOC and eCO2 sensor\\ | ||
| SI7021 - relative humidity and temperature sensor\\ | SI7021 - relative humidity and temperature sensor\\ | ||
| - | ESP8285 - main CPU with WiFi | + | < |
| + | | ||
| + | ESP8285 - main CPU with WiFi\\ | ||
| ===Current progress: | ===Current progress: | ||
| Desing board - DONE\\ | Desing board - DONE\\ | ||
| Order board - DONE\\ | Order board - DONE\\ | ||
| - | Assembly and test\\ | + | Assembly and test - DONE\\ |
| Develop SW\\ | Develop SW\\ | ||
| Integrate with ventilation\\ | Integrate with ventilation\\ | ||
| + | |||
| + | ===TODO for REV. B=== | ||
| + | Add pull-up resistor to GPIO2\\ | ||
| + | Add clearance on sides of antenna/use chip antenna\\ | ||
| + | Find another < | ||
| + | Find another temperature and humidity sensor\\ | ||
| + | Enlarge board & add better thermal isolation between CPU, gas sensors, and temperature sensor\\ | ||
| + | -> maybe a mezzanine board?\\ | ||
| + | --> currently this isn't an issue when the fan is unregulated\\ | ||
| + | Add mounting holes\\ | ||
| + | Add 4R7+1uF RC element to VDD of SGP40 and CCS811 sensor\\ | ||
| + | Add UART on board for particle sensors (HPMA115C0-XXX, | ||
| + | Add RF blocking inductor to VDDPA of ESP8285\\ | ||
| + | Add RGB LED for indication\\ | ||
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