Difference between revisions of "PV Log"
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Latest revision as of 16:51, 11 September 2015
20120104 Phone from n.p.
- Current retail price is 50 E
- ABCD inputs 95%, CAN-BUS only for some pcs
- Meeting on 2011.01.09 to:
- Confirm one day before (Sunday)
- Test the board with changed resistors in inputs
- Green clamp-type housing
- Discuss USB/microSD
- 20120104 Phone to c.b.
- LPC1768FBD10055 price 4.4E
- LPC1769FBD10055 price 4.6E
- ATMEGA8A-AU price 1.44 E
- ATMEGA168A-AU price 1.45 E
- LM2576D2T-5G ON-semi price 0.90 E
- TCMT1600 751-1374-2-ND OPTOCPL PHOTOTRANS 1CH 300% 4SOP $0.22400 @6000PCS
- where to find usb-stick, micro-sd ?
- Still ST-Ericsson radio at much better price than si-labs
Eurocircuits pricing
- PVRADIO 41 x 45 mm
- Stencil 36.6 EU
- 500 pcs 632 EU --> 1.264 EU / pc
- 1000 pcs 942 EU --> 0.942 EU / pc
- PV 99 x 72 mm
- Stencil -->41.2 EU
- 500 pcs 1340EU --> 2.680 EU / pc
- 1000 pcs 2090 EU --> 2.090 EU / pc
2012.01.11
- Prepare board for testing in today n.p. meeting (canceled)
- R17-R30 input series resistors have to be increased
- In tests the low and high could not be distinguished
- The Led current was always large enough to activate the input optocouplers
- For testing, instead change the on board smd 1.5K resistors, resistors on the clamp can be added
- Some testing on the PWM audio
- mbed P18 is the linear audio output from DAC
- mbed P24 is PWM audio output
- PCB modified P18 via capacitor is connected to Loudspeaker clamp.
- LM386 seems dead
- External amplifier can be used for testing and demo
- Solder-wired Half bridge amplifier to PWM was not working well and removed
- Worked better with +12 instead +5 but gets too hot
- WHAT IF MP3 LIBRARY does not return from a function call?????????
PARTS COST
- Check USB connector