# Hot Water Control



## Getting started

The parts list for the controller:   
Digikey  

Qua | Part # | MFG # | Description | Price
---- | ------ | ----- | ----------- | -----
1   | 255-2978-ND | AQA221VL | SSR RELAY SPST-NO 15A 75-250V | 22.67
1 | 1470-LCW25US05-ND | LCW25US05 | AC/DC CONVERTER 5V 25W | 12.04
3 | WM3700-ND | 39012020 | CONN RCPT HSG 2POS DUAL | 0.248  
6 | WM18518CT-ND | 39000181 | CONN SOCKET 18-24AWG CRIMP GOLD | 0.573
3 | WM3800-ND | 39281023 | CONN HEADER VERT 2POS | 0.578  
1 | VOS618A-3X001TCT-ND | VOS618A-3X001T | OPTOISOLATOR 3.75KV TRANS 4-SSOP | 0.66
1 | TBD | TBD | Plastic Box | ?
1 | TBD | TBD | IEC C13 receptacle | ?
1 | TBD | TBD | NEMA 5-15 receptacle | ?
1 | TBD | TBD | sensor cable connector | ?

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[Flow Sensor](https://www.amazon.com/gp/product/B07QNN3R6G/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1)  
[Adapters for Flow Sensor BSP:NPT](https://www.amazon.com/gp/product/B089D8NF7H/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1)  
[Recirculating Pump](https://www.amazon.com/dp/B07D52LRWK?pd_rd_i=B07D52LRWK&pf_rd_p=0e085ce4-a814-4f4b-b24c-1b9dbfa919e0&pf_rd_r=WSDZ0WZ4NQNEJAG3AV5G&pd_rd_wg=ZFJG1&pd_rd_w=kgr92&pd_rd_r=930ae7a6-45a4-49ec-a7b8-49fbe531e289&th=1)  
[Check Valve (spring style)](https://www.amazon.com/American-Valve-G31SL-Lead-Check/dp/B00QGX9LV4/ref=sr_1_5?crid=2KD3MNWKJZHZU&keywords=check%2Bvalve&qid=1663951094&sprefix=check%2Bvalve%2Caps%2C135&sr=8-5&th=1)  
[Pump Controller](https://www.adafruit.com/product/2772)  
[MQTT monitor and control](https://www.adafruit.com/product/3010)  

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And the software for M0 Arduinos which require features on M0 chips.