.... i have the LTC 4155 15W power IC as well as the STC3115 battery monitor ICs recognised on the I2C bus with 5V power applied, yippeee. embarrassingly, i had the 5V DC socket wired reverse-polarity. this is, uhh, an officially-sanctioned test of the reverse-voltage protection on the power board design. no, really :)
on a 2nd (minimally-populated) board i have the 5V regulated output up, but not on the fully-populated board. what i'll do is fill in all the components from the minimally-populated board, testing it as i go along.
i'm looking forward to _not_ setting fire to the apartment when i plug in the e-bike lithium battery. unlike many of these "laptop" batteries it has no current protection circuit built-in, and it's perfectly capable of delivering 20 amps maximum current :)
l.
On Fri, Nov 27, 2015 at 10:59 PM, Alexander Stephen Thomas Ross maillist_arm-netbook@aross.me wrote:
Great news, happy news!
Where did you get the ebike batt from?
a random internet search - can't recall immediately the company name, can look it up if you're interested. l.
On 27/11/15 23:11, Luke Kenneth Casson Leighton wrote:
On Fri, Nov 27, 2015 at 10:59 PM, Alexander Stephen Thomas Ross maillist_arm-netbook@aross.me wrote:
Great news, happy news!
Where did you get the ebike batt from?
a random internet search - can't recall immediately the company name, can look it up if you're interested. l.
i am, though how much was it?
Ive been thinking about a big lithium batt for my portable boom box project and for use with other gadgets. As as flexible power bank.
arr i just realised, its in a 3.7v configuration and not say 14.8v configuration?
im boosting the voltage to 19-36v. hench me thinks i’m going to need that higher normal (is that the right word?) voltage :)
Thank you.
On Sat, Nov 28, 2015 at 1:05 PM, Alexander Stephen Thomas Ross maillist_arm-netbook@aross.me wrote:
On 27/11/15 23:11, Luke Kenneth Casson Leighton wrote:
On Fri, Nov 27, 2015 at 10:59 PM, Alexander Stephen Thomas Ross maillist_arm-netbook@aross.me wrote:
Great news, happy news!
Where did you get the ebike batt from?
a random internet search - can't recall immediately the company name, can look it up if you're interested. l.
i am, though how much was it?
$10 in volume. company's named g-power.
Ive been thinking about a big lithium batt for my portable boom box project and for use with other gadgets. As as flexible power bank.
arr i just realised, its in a 3.7v configuration and not say 14.8v configuration?
correct.
im boosting the voltage to 19-36v. hench me thinks i’m going to need that higher normal (is that the right word?) voltage :)
... and a charging mechanism, and to check the power consumption. this battery's rated at nominal 0.3C (3A) discharge rate, but can cope with 1C (10A).
it's a low-cost battery in other words.
l.
arm-netbook@lists.phcomp.co.uk
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Alexander Stephen Thomas Ross -
Luke Kenneth Casson Leighton