diff --git a/README.md b/README.md
index 590f832..5ab6d8e 100644
--- a/README.md
+++ b/README.md
@@ -1,35 +1,39 @@
 # Balcony Weather Station
 
-A DIY weather station on my balcony that is hooked up to [Home Assistant](https://www.home-assistant.io/).
+A DIY weather station project on my balcony. The data is sent to
+[Home Assistant](https://www.home-assistant.io/) to be used as part of home
+automation projects.
 
 The source code started as [CircuitPython](https://circuitpython.org/) following
-many of the patterns I learned in creating an [aquarium controller](https://git.sr.ht/~travisshears/sewa-reef-controller).
-I have since switch to using C.
+many of the patterns I learned in creating an [aquarium controller project](https://git.sr.ht/~travisshears/sewa-reef-controller).
+I have since switch to using C for better performance and control.
 
 ## Capabilities
 
-Right now the station is fairly limited measuring only temperature, humidity,
-and atmospheric pressure. I have plans to expand the project to in the end measure:
-
-- ✅ tempature
-- ✅ humidity
-- ✅ atmospheric pressure
-- noise levels
-- wind speed
-- wind direction
-- rain fall
-- light
+- Send data to Home Assistant via MQTT
+- ✅ read tempature
+- ✅ read humidity
+- ✅ read atmospheric pressure
+- read partical matter PM1, PM2.5, and PM10
+- read noise levels
+- read wind speed
+- read wind direction
+- read rain fall
+- read light level
 
 ## Hardware
 
+### Node1
+
 Sensors:
-- Node1: [BME280](https://shop.pimoroni.com/products/bme280-breakout?variant=29420960677971)
+- [BME280](https://shop.pimoroni.com/products/bme280-breakout?variant=29420960677971)
+  - reads tempature, humidity, and atmospheric pressure
+- [PMS5003](https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable)
+  - reads partical matter PM1, PM2.5, and PM10
 
-MCs:
-- Node1: [Raspberry Pi Pico W](https://www.raspberrypi.com/products/raspberry-pi-pico/)
+MC: [Raspberry Pi Pico W](https://www.raspberrypi.com/products/raspberry-pi-pico/)
 
-Other:
-- [Weatherproof Enclosure](https://shop.pimoroni.com/products/weatherproof-cover-for-outdoor-sensors?variant=40047884468307)
+Weatherproof Enclosure: [weatherproof-cover-for-outdoor-sensors](https://shop.pimoroni.com/products/weatherproof-cover-for-outdoor-sensors?variant=40047884468307)
 
 _Note: I would not recommend buying from pimoroni from EU as shipping tax is huge!_
 
diff --git a/pms5003.c b/pms5003.c
index 5dba5d6..0a99c81 100644
--- a/pms5003.c
+++ b/pms5003.c
@@ -14,6 +14,7 @@ Sourcces:
 https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable
     - https://github.com/pimoroni/pms5003-python/blob/main/pms5003/__init__.py
     - https://github.com/vogelrh/pms5003c/tree/master
+    - https://github.com/raspberrypi/pico-examples/blob/master/uart/hello_uart/hello_uart.c
 */
 
 void pms5003_init(pms5003_config *new_config, uart_inst_t *uart, uint8_t tx_pin,