- Calculated pre-charge resistor
- Refined PCB design (including diodes to protect relays)
- Created list of parts.
- ... THEN ... worked out need to relay switch GROUND (not positive) ... because then can easily switch on the monitors (fuel gauge etc).
- Re-configured the circuit to work switching GROUND (not positive).
- Purchased all parts required to make the 'LIPO Protection' circuit.
- Tested that the circuit will work with switching ground instead of +ive.
- Tested selected relay with circuit ... works perfectly !
- Tested Gauge and alarms with multimeter (even that drain, ruins the circuits).
- Tested Gauge direct through relay to ground ... works perfectly !
- Tested Gauge and alarm together ... works perfectly !
- Purchased switches (decided switch types).
- Tested voltage divider to run relay (realised a mistake in circuit, and fixed).
- Tested relay circuit (works !).
- Testing transistors and delay circuit ... managed to fry a regulator (7515).
- Realised that relay won't fit in the little "Jiffy box" I've got ... so completely re-drew the PCB so that it will fit horizontally (very tight fit).
- Too tired, went to bed at 1.00am
Things to do:
- Test circuit with actual parts (and at actual voltage).
