User:Blutsauger - Revision history

Blutsauger: /* Import Contacts (SHR version) */

2012-08-19T14:36:48Z

‎Import Contacts (SHR version)

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T21:13:51Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T21:06:19Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T20:58:25Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T20:56:40Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T20:54:52Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-15T14:37:42Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-14T22:09:23Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-14T22:01:05Z

‎Even more unrecommended charging options

Blutsauger: /* Even more unrecommended charging options */

2012-03-14T22:00:05Z

‎Even more unrecommended charging options

@@ Line 193: / Line 193: @@
 http://pub.edvbl.dyndns.org/sql2vcf-pisi.sh (exctract sql database, call the below script, 'ssh' it to the FR and 'pisi' it there)<br>
 http://pub.edvbl.dyndns.org/readsql-pisi.py (convert the tab-separated textfile into a vcf file, called from above script)<br>
 ==Beagle Board==

@@ Line 107: / Line 107: @@
 So simply adding a solar panel would not be enough, more electronics will be necessary, small enough to hide them in remaining space.
-The next picture is one attempt to use a DC/DC converter to get a stabilized 5V output. Unfortunately it didn't work, but this was because of my lack of eletronic skills. What I wanted to show is the amount of space that is needed for the IC and the two condensators. This would not fit into the FR case without major design modifications:
+The next picture is one attempt to use a DC/DC converter to get a stabilized 5V output. Unfortunately it didn't work, but this was because of my lack of eletronic skills. What I wanted to show is the amount of space that is needed for the IC and the two condensators. This would not fit into the FR case without major design modifications.
 [[Image:Dcdc_converter.jpg|400px]]

← Older revision		Revision as of 21:06, 15 March 2012
Line 112:		Line 112:

	Another attempt was to disassemble an existing solar charger with working electronics. It costs about 30 EUR and has a solar panel that even fits better to the FR cover. Again, the problem are the big condensators. Several SMD parts mounted on the backside. USB and switch etc. could be removed. But again the problem: This device also discharges the battery if there's not enough light.		Another attempt was to disassemble an existing solar charger with working electronics. It costs about 30 EUR and has a solar panel that even fits better to the FR cover. Again, the problem are the big condensators. Several SMD parts mounted on the backside. USB and switch etc. could be removed. But again the problem: This device also discharges the battery if there's not enough light.
		+	But: if the battery is empty, it can charge it with incredible 0.5mA. So if you are lying half-dead on the ground in a sunny place and wait for about an hour, you probably can send an emergency-call...

	[[Image:Dcdc_disassembled.jpg\|400px]]		[[Image:Dcdc_disassembled.jpg\|400px]]

@@ Line 108: / Line 108: @@
 So simply adding a solar panel would not be enough, more electronics will be necessary, small enough to hide them in remaining space.
 The next picture is one attempt to use a DC/DC converter to get a stabilized 5V output. Unfortunately it didn't work, but this was because of my lack of eletronic skills. What I wanted to show is the amount of space that is needed for the IC and the two condensators. This would not fit into the FR case without major design modifications:
 [[Image:Dcdc_converter.jpg|400px]]
 Another attempt was to disassemble an existing solar charger with working electronics. It costs about 30 EUR and has a solar panel that even fits better to the FR cover. Again, the problem are the big condensators. Several SMD parts mounted on the backside. USB and switch etc. could be removed. But again the problem: This device also discharges the battery if there's not enough light.
 [[Image:Dcdc_disassembled.jpg|400px]]

@@ Line 111: / Line 111: @@
 Another attempt was to disassemble an existing solar charger with working electronics. It costs about 30 EUR and has a solar panel that even fits better to the FR cover. Again, the problem are the big condensators. Several SMD parts mounted on the backside. USB and switch etc. could be removed. But again the problem: This device also discharges the battery if there's not enough light.
-[[Image:Dcdc_disassembpled.jpg|400px]]
+[[Image:Dcdc_disassembled.jpg|400px]]
 ==Using alternate browsers==

← Older revision		Revision as of 14:37, 15 March 2012
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	So simply adding a solar panel would not be enough, more electronics will be necessary, small enough to hide them in remaining space.		So simply adding a solar panel would not be enough, more electronics will be necessary, small enough to hide them in remaining space.
		+
		+	[[Image:Dcdc_converter.jpg\|400px]]

	==Using alternate browsers==		==Using alternate browsers==

← Older revision		Revision as of 22:09, 14 March 2012
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	But the most weird thing - I never was aware of: the solar panel can also discharge the batteries. See the picture which is taken inside a room under a 100W standard lamp and still discharging at about 0.5mA. So, I'm not an electronics engineer and there's a good reason for that! But this solution is completely unusable without any further charging electronics. Some guy suggested to use a MPPT (maximum power point tracker). Maybe I'll give it a try, but my experience with (semi-professional) solar chargers over some years were always quite disappointing.		But the most weird thing - I never was aware of: the solar panel can also discharge the batteries. See the picture which is taken inside a room under a 100W standard lamp and still discharging at about 0.5mA. So, I'm not an electronics engineer and there's a good reason for that! But this solution is completely unusable without any further charging electronics. Some guy suggested to use a MPPT (maximum power point tracker). Maybe I'll give it a try, but my experience with (semi-professional) solar chargers over some years were always quite disappointing.
		+
		+	So simply adding a solar panel would not be enough, more electronics will be necessary, small enough to hide them in remaining space.

	==Using alternate browsers==		==Using alternate browsers==

@@ Line 96: / Line 96: @@
 These are 3x 1.6V NiZn accus; In comparison to NiMh they have a higher voltage which is an advantage in many cases, but I guess the charging strategy is still under development.
-The solar panel has 5V, delivering 80mA current when short circuited.
+The solar panel has 5V, delivering 80mA current when short circuited and exposed to full sunlight.
 It has about the max size that can be attached on the back of the phone.
 The batteries have about the size so that they should fit into the battery case with some modifications of the 3D model.

@@ Line 94: / Line 94: @@
 ==Even more unrecommended charging options==
 I thought it should be easy to charge a set of batteries by simply attaching a solar panel to them.
-These are 3x 1.6V NiZn accus with a 5V solar panel, delivering 80mA current when short circuited.
+These are 3x 1.6V NiZn accus; In comparison to NiMh they have a higher voltage which is an advantage in many cases, but I guess the charging strategy is still under development.
-The solar panel has about the max size that can be attached on the back of the phone.
 The batteries have about the size so that they should fit into the battery case with some modifications of the 3D model.