TinyCharger – Single Cell Li-Ion Battery Charger with Monitoring
https://www.electronics-lab.com/tinycharger-single-cell-li-ion-battery-charger-with-monitoring/
TinyCharger is an ATtiny25/45/85-based, single-cell Li-ion battery charger with selectable charging current limit (100mA – 1000mA) and an OLED display for monitoring. For battery charging the TP4056 is used. The TP4056 is a complete constant-current/constant-voltage linear charger for single cell lithium-ion batteries. The maximum charge voltage is fixed at 4.2V and the charge current can […]
Lipo Charge/Boost/Protect board in 18650 cell holder format
https://www.electronics-lab.com/lipo-charge-boost-protect-board-18650-cell-holder-format/
Peter6960 published a new build: So couple months ago, GreatScott made a video where he designed a circuit. Nothing too innovative, just the same TP4056 charger the MT3608 Boost combined on one PCB. He did add a Lipo protection circuit though, initially using the same DW01. But then, the Aha moment from this video, he […]
TP4056 3V3 Load Share Upgrade
https://www.electronics-lab.com/tp4056-3v3-load-share-upgrade/
A lot of project are battery powered and some of them need dual battery links. Robert on hackaday.io had shared his new project that shed light on this issue. He built an load sharing addon board with the ability to charge the battery while the project is operating. Many Chinese charger boards are out there […]
ATMEGA328 based Weather Station
https://www.electronics-lab.com/atmega328-weather-station/
Vlad @ denialmedia.ca has build a solar powered weather station based on ATMega328 microcontroller that is able to measure temperature, a humidity, and UV radiation and it uploads measurement on WeatherUnderground network. The data are send to the air using a 433MHz link. The sensors used are DHT22, ML8511, BMP180 and a TP4056 charger IC is used to […]