Mitsubishi Heatpump ESP8266

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STD Mitsubishi Heatpump ESP8266

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Update time： 2020-03-01 01:42:44

Creation time： 2019-12-03 09:09:47

Description

Building off https://nicegear.nz/blog/hacking-a-mitsubishi-heat-pump-air-conditioner/, we have learned how to talk to a Mitsubishi brand Heatpump which uses CN105. His work is under a BSD license. And then we have https://github.com/SwiCago/HeatPump, which is under lesser GPL Instead of using perfboard or deadbug, let us have a PCB. I want a WS2812 RGB LED, a 3v3 regulator, some level shifters, and a 4-pin connector to lead back to CN105.

Design Drawing

schematic diagram

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Sheet_1
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PCB

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cn105 take1
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cn105 take 2
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preshrink backup
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity	BOM_Supplier Part
1	22uF	C4	1206	1	C5672
2	BSS138P,215	Q1,Q2,Q3	SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR	3	C75547
3	CJT1117B-3.3	U2	SOT-223	1	C78777
4	100nF	C5,C2,C1	0402	3	C85953
5	CN105	P2	HDR-TH_4P-P2.54-V	1	DNF4
6	10uF	C3	1206	1	C13585
7	10K	R1,R2,R3,R4,R5,R6,R8,R9,R10,R11	0402	10	C60489
8	ESP-12F(ESP8266MOD)	U1	WIFIM-SMD_ESP-12F-ESP8266MOD	1	C82891
9	PGM	P1	HDR-TH_2P-P2.54-V-M	1	DNF2
10	WS2812E	LED1	LED-SMD_4P-L5.0-W5.0-BL	1	C139127
11	470	R7	0402	1	C114877