Features

• Description
• Our RedBoards are great. But don't they sometimes seem a little
• BIG
• ?!
• Enter
• smol
• , a new range of boards which are both small in size and small on current draw. It's a smol world!
• The smol Power Board LiPo is an intelligent power board for the smol ecosystem. You would expect this board to have an MCP73831 Li-Ion and Li-Polymer charger on it, and indeed it does. You would also expect this board to have a MAX17048 I2C fuel gauge on it, and indeed it does. But you probably wouldn't expect it to have an AVR ATtiny841 microcontroller on it. So why have we included one?
• This is an
• intelligent
• power board for smol. The power board takes control of the 3.3V power for the whole smol stack. The processor board can then instruct the power board to put the entire smol stack into deep sleep for a pre-defined interval. Sleep intervals of 10's of milliseconds to several days are possible. In deep sleep, the only device left powered is the ATtiny841 and that reduces the current draw to
• 6μA
• . Yes, you read that right, 6 microamps! smol makes it possible for your battery life to be measured in
• months
• not days! We ***d the fantastic Otii Arc Power Analyzer to **** us reduce the sleep current as much as possible.
• Our smol Power Board Arduino Library has examples to get you started.
• smol
• is an ecosystem of miniature processor boards, peripheral boards, power boards and accessories. Designed to be both physically small and to have the smallest possible current draw, smol is the perfect choice for applications like wildlife tracking or discrete long-term monitoring. smol boards are designed to stack one on top of the other, using 16-way 0.5mm-pitch Flexible Printed Circuits(FPCs)to provide the interconnect from one board to the next. Looking for a really compact solution for your next project? This is it!
• We will be adding new smol boards over the coming months. Don't see the board you need for your application? Reach out to us via the SparkX Forum and tell us which board(s)we should add next!
• Get started with the smol Hookup Guide
• Dig into the specifics with the smol Power Board LiPo Hookup Guide
• Experimental Product:SparkX products are rapidly produced to bring you the most cutting edge technology as it becomes available. These products are tested but come with no guarantees. Live technical support is not available for SparkX products. Head on over to our forum for support or to ask a question.
• Features
• Li-Ion/Li-Polymer Charger:MCP73831
• Charge current:100mA(when USB power is connected)
• Battery Fuel Gauge:MAX17048
• On-Board Microcontroller:ATtiny841 8-bit AVR Microcontroller
• 8KBytes Flash
• 512Bytes EEPROM
• 512Bytes SRAM
• Power Regulation:smol 3.3V:AP2112K-3.3V
• IOUT(max):600mA
• IQ:55μA
• ATtiny841 3.3V:STLQ015-3.3V
• IOUT(max):150mA
• IQ:1.4μA
• Sleep Current Draw:6μA(with ATtiny841 in Power-Down Mode)(measured by Otii Arc)
• smol Specifics:Interface:I2C
• ATtiny841 Default Address:0x50
• MAX17048 Fuel Gauge Address:0x36
• PROC_PWR_EN:The power board pulls PROC_PWR_EN low to disable the regulator on the processor board
• Properties:Length:1.60"(40.6mm)
• Width:0.42"(10.7mm)
• Height:0.29"(7.4mm)max.
• Weight:1.4g(0.05oz)
• PCB thickness:0.8mm