Peak Power Solar Charger

sPyOpenSource·ESP32-PCB·Solar/solar.kicad_pcb

Peak Power Solar Charger PCB layout, top view — open source board by sPyOpenSource

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About the Peak Power Solar Charger PCB

Peak Power Solar Charger is an open source PCB design by sPyOpenSource, published on GitHub under the MIT license. It is a 2-layer board measuring 79 × 77 mm, with 35 components from 30 distinct parts.

Other key parts include the MAX4173H, HMHA2801 and MAX5424. By type, the board carries 10 resistors, 7 connectors, 7 capacitors, 3 ICs, 2 LEDs and 2 diodes.

It belongs with the power & battery and robotics & motion designs in this gallery.

From the project

PCB boards designed with ESP32

Peak Power Solar Charger ========================

This projects implements a peak power 12V solar charger for 3.7V batteries. It is inspired by a very similar project for the Arduino platform by Tim Nolan

In addition to Tim Nolans project, my design makes the current measurements (battery voltage, solar voltage, solar current and solar watts) available via coap resources.

Main components on the Peak Power Solar Charger

MAX4173H HMHA2801 MAX5424

Peak Power Solar Charger bill of materials (BOM)

35 components, 30 distinct parts.

Qty	Part	Footprint	Refs
1	MAX4173H	SO8E	IC1
1	HMHA2801	SOP-4_4.4x2.8mm_Pitch1.27mm	U1
1	MAX5424	TDFN-8-1EP	U2
1	IRFIZ44N	SOT-223	Q2
1	SOLAR_INPUT	1210	J1
1	Left	PIN16	J2
1	Right	PIN16	J3
1	BATTERY_OUTPUT	1210	J4
1	header3	PIN6	J5
1	in	1210	J6
1	SOLAR_OUTPUT	1210	J7
1	—	1pin	1PIN
1	Receive	PIN2	RX2
1	Receive	JST_PH_S2B-PH-K_02x2.00mm_Angled	RX1
1	Transmit	JST_PH_S2B-PH-K_02x2.00mm_Angled	TX1
1	D_Schottky	DO-214AC	D1
1	COMMS	0603	D5
1	33uH	7447779139	L2
4	0.1uF	SM0603_Capa	C1, C4, C6, C15
1	220uF	Cpol-6.3x7.7	C2

Show 10 more

Qty	Part	Footprint	Refs
1	100uF	Cpol-6.3x7.7	C3
1	1nF	0603	C5
2	10k	0603	R1, R12
1	10k	SM0603	R2
1	560R	SM0603	R3
1	100R	0603	R4
1	0.005R	R7	R7
1	4K7	SM0603	R9
1	220R	SM0603	R10
2	560R	0603	R13, R14

Peak Power Solar Charger design files

The KiCad project lives in the sPyOpenSource/ESP32-PCB repository on GitHub; these links point at the commit this page was built from.

LayoutSolar/solar.kicad_pcb
SchematicSolar/solar.kicad_sch

Peak Power Solar Charger: common questions

How big is the Peak Power Solar Charger PCB?

The Peak Power Solar Charger measures 79 × 77 mm, has 2 copper layers and is 1.6002 mm thick.

How many components are on the Peak Power Solar Charger?

35 components, from 30 distinct parts. The full bill of materials is listed on this page.

Where can I download the Peak Power Solar Charger design files?

From the sPyOpenSource/ESP32-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Peak Power Solar Charger design in my own project?

Yes, under the terms of its MIT license, which sPyOpenSource chose for the repository.

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