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Li-ion chargers on MAX1811 and thermometer

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Presented Li-ion chargers are based on chip MAX1811, which controls the process of charging and needs only two external capacitors to its proper work.
The chargers are powered directly from the USB port, additionally one of them can be powered from 5V power supply.
Two LEDs indicate the power supply and duration of charging.

Additionally, a thermometer on Nokia 3310 display is presented here. It is a simple system, which main element is Atmega8 with DS18B20. The whole is powered from Li-ion accumulator. Program for Atmega was written in Bascom.
The PCBs were designed in Eagle and made in thermal transfer method using laminator.

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Link to original thread (useful attachment) – Ładowarki Li-ion na MAX1811 + termometr
 

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