The goal of this project is to monitor, display info, and protect large LiFePO4 battery packs using Linear's LTC6802IG-2 chip. A total of two (2) PCBs will have to be made. A host PCB which will contain an attiny2313 and a radio transmitter, and a client pcb which will contain the LTC6802IG-2. This way multiple client PCB's can be connected to monitor and protect battery packs with large cell counts. The radio transmitter will interface with the EZ430-CHRONOS-433 watch from TI. The watch will display information (pack voltage, minimum cell voltage, amps, amp hours) sent by the LTC6802. One of the temperature inputs from the linear chip will be used to measure amps. One of the pins from the ATTiny2313 will need to be used to shut off a sold state relay connected to the charger. The system must be able to safely protect batteries while connected to a 25A charger.
LTC6802IG-2 <--> ATTiny2313 <--> Cronos 433
You are in charge of making and delivering a tested and working prototype. When complete I would like to have the finished prototype, parts list (from major North American distributers (Mouser, Farnell, Digi-Key) , gerber files, and the source code. Please include the costs of materials, fabrication and shipping in your bid. Only bid if you are interested and will work hard to complete the project on time. Happy bidding.