HardLabs

Power-Eater

yu65536·Power-Eater·hardware/charge.kicad_pcb

Power-Eater PCB layout, top view — open source Renesas board by yu65536
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About the Power-Eater PCB

Power-Eater is an open source Renesas PCB design by yu65536, published on GitHub under the Custom license license. It is a 2-layer board measuring 132.8 × 93 mm, with 128 components from 36 distinct parts.

Its main chip is the R5F21256SNFP, from the Renesas family. Other key parts include the NJM2119, LM2940, NJM2825, MCP3425A0T-E/CH and MCP4922-E/P. By type, the board carries 49 resistors, 38 capacitors, 10 ICs, 10 connectors, 10 diodes and 4 switches.

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

From the project

Ni-MH battery charger for mini4wd ミニ四駆用ニッケル水素充電器

This is Ni-MH battery charger for mini4wd. - very low noise and low ripple - dv charge / discharge - cccvdv charge (i thinked new method for mini4wd charger) - race charge method - low internal resigtance, high voltage, many capacity - low life - programable charge/discharge sequence - can use battery tester - complex sequence like IF

�~�j�l��p�j�b�P�����f�[�d��ł��B - �m�C�Y�⃊�v�������Ȃ� - dv�[�d����d���ł��� - cccvdv�[�d���ł��� - ���[�X�p�r�ɓK���Ă��� - dv�����ɔ�ׂāA�������R�A���d���A��e�ʂ̏[�d���”\ - �����͒Z���Ȃ� - �[���d�V�[�P���X��g�ނ��Ƃ��ł��� - �ȈՏ[���d�����@�Ƃ��Ďg�p�”\ -…

Main components on the Power-Eater

NJM2119LM2940NJM2825MCP3425A0T-E/CHMCP4922-E/PM51957BFPR5F21256SNFPADM3202ARN

Power-Eater bill of materials (BOM)

128 components, 36 distinct parts.

QtyPartRefs
3
NJM2119
U1, U3, U4
1
LM2940
U2
1
NJM2825
U5
1
MCP3425A0T-E/CH
U6
1
MCP4922-E/P
U7
1
M51957BFP
U8
1
R5F21256SNFP
U9
1
ADM3202ARN
U10
2
2SD2390
Q1, Q2
1
FC-255 32.768kHz
X1
1
FA-238 20MHz
X2
6
BH-6-15
P1, P2, P3, P4, P5, P6
3
BH-6-15
P7, P8, P10
1
CONN_01X09
P9
1
AQM1602A
DS1
2
JUMPER
JP1, JP2
4
SW_PUSH
SW1, SW2, SW3, SW4
1
SBM1045VSS
D1
7
RB751S-40
D2, D4, D5, D6, D7, D8, D9
2
LED
D3, D10
Show 16 more
QtyPartRefs
1
470u
C1
22
0.1u
C2, C4, C5, C7, C8, C9, C10, C11 +14
3
47u
C3, C16, C38
1
47u
C6
5
1u
C19, C21, C22, C25, C30
2
22p
C26, C27
2
18p
C28, C29
2
0.01u
C36, C37
16
1
R3, R7, R38, R39, R40, R41, R42, R43 +8
2
1k
R4, R10
6
20k
R5, R6, R8, R9, R18, R22
11
10k
R11, R12, R19, R23, R24, R25, R26, R31 +3
2
0
R13, R17
8
100
R14, R16, R20, R21, R27, R28, R29, R30
2
470
R15, R35
2
4.7k
R33, R34

Power-Eater design files

The KiCad project lives in the yu65536/Power-Eater repository on GitHub; these links point at the commit this page was built from.

Power-Eater: common questions

What microcontroller does the Power-Eater use?

The Power-Eater is built around the R5F21256SNFP, from the Renesas family.

How big is the Power-Eater PCB?

The Power-Eater measures 132.8 × 93 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Power-Eater?

128 components, from 36 distinct parts. The full bill of materials is listed on this page.

Where can I download the Power-Eater design files?

From the yu65536/Power-Eater repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Power-Eater design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Power-Eater without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Renesas firmware against it before you order a PCB.

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