[chbot] LiPo 1200mAh 3.7V
stephen at irons.nz
Tue Aug 25 00:57:28 BST 2020
The thingy is built around the M5Stack which has a battery manager
built-in, so charging is sorted.
The M5Stack is actually quite a nice little device. Based on ESP32,
with a display and a few buttons in a nice housing that can stack
together with various expansion modules with a 2x15 pin expansion
There are a number of mounting bases too: with magnets to stick to a
fridge or whiteboard, keyholes to mount to screws, DIN rail (though it
is not really industrial quality), etc.
I have 3D printed a base, and it fits very nicely. Made a custom PCB
It is more expensive than the TTGO, Heltek, whatever modules, until you
factor in the cost of a housing and battery (included with M5Stack),
and the heartache of destroying your loose PCB because something
touched something it shouldn't have.
On Mon, Aug 24, 2020 at 19:44, Henri Shustak <henri.shustak at gmail.com>
> Hi glad you sorted it all out. I am guessing you have the BMS all
> sorted. If not and you want me to charge one, then as long as it has
> a nice connector I can help.
>> On 8/08/2020, at 8:30 AM, stephen at irons.nz
>> <mailto:stephen at irons.nz> wrote:
>> Thank you all for your help.
>> It turns out that the Nicegear is really an Adafruit part, and they
>> give the Adafruit part number on the Nicegear page.
>> Adafruit will not ship Lipos only, but will send them using DHL at
>> a sensible price of you put something else in the order. I guess
>> this is the way phones are packed, with the battery separate.
>> They should arrive next week.
>> Stephen Irons
>> On 31/07/2020 15:51, Stephen Irons <stephen at irons.nz
>> <mailto:stephen at irons.nz>> wrote:
>> I am looking for a few (2--5) LiPo batteries, around 1200 mAh 3.7 V
>> with 2 mm JST connector, size about 50 x 35 x 7 mm.
>> The BOM calls for
>> but they are out of stock with no ETA -- they seem to be tricky to
>> bring into the country at this time.
>> Spare lithum cells seem tricky to buy from overseas. We buy AA
>> Li-ion batteries in pairs inside cheap-as torches (and throw away
>> the garbage housing) so they are shipped as consumer items, rather
>> than spare batteries. But I have not found an off-shore source for
>> these LiPos in a consumer device.
>> I have looked at a few online hobby shops -- drones often use small
>> lipos -- but have not had any success.
>> Fairly urgent (10--14 days is when other offshore items are
>> arriving), and I am happy to pay for DHL or similar shipping, but if
>> they are really not available in NZ, we will have to think of an
>> Does anyone have any suggestions?
>> Stephen Irons
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