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Messages - mrbbp

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1
TinyLily / how to upload a custom bootloader?
« on: January 11, 2017, 11:19:26 AM »
is it possible to upload bootloader on the tinylily with the programmer? or do we need a special cable?

2
TinyLily / Custom bootloader for less 2.7 volt function
« on: January 10, 2017, 01:32:34 AM »
Hello,
I'm working with a tinylily + 0,98 oled i2c display and a cr2032 battery...
When power go below 2.7v the tinylily stop to work but the display have enough power to display...
I remember to have read a line about the ability to change bootloader to have a working microcontroller working with less than 2.7v power batteries.
How to do that sort of work...
Is it a changing fuse values or other way.
Please help.

Regards

3
TinyLily / Re: short circuit on I2C during upload?
« on: December 23, 2013, 06:23:53 AM »
sorry i haven't got schematics...
Only use 4 wires
2 for I2C and 2 for power and gnd on the tinylily
had other 2 wires for display module for power and grnd... from the battery holder.




strange...

i do not understand... there is no reason to have this behavour ! perhaps, i have to protect from the battery and switch? but how?

4
TinyLily / Re: clock speed difference
« on: December 23, 2013, 06:15:03 AM »
Sorry, i can't...
they are mounted the backside on top, can't see processor side ;(
perhaps it is when i select the board (in Sublime Text with arduino plugins), it does not apply the good one...
strange behaviour anymore...

5
TinyLily / short circuit on I2C during upload?
« on: December 11, 2013, 05:56:03 PM »
Hello.

I'm working with 7 segments display panel from sparkfun and kill 2 display with tinylily!
Not the display itself but the atmega placed on the display's back...
It seems it arrive when uploading sketch in the tinylily.
Is it possible?
the display power are not connected with the tinylily power pin...
i use I2C connection on pin A4 and A5
I'm in trouble...
is possible or am i unlucky?

Any similar pb?

regards

éric

ps: some picture of the toy

6
TinyLily / Re: Running hc-sr04 ultrasonic sensor with TinyLily
« on: November 21, 2013, 06:06:47 PM »
read this
http://forum.tiny-circuits.com/index.php?topic=127.15

about pin 0 and 1 that seems to doesn't work when usb is plugged... ;)

7
TinyLily / Re: Running hc-sr04 ultrasonic sensor with TinyLily
« on: November 21, 2013, 06:01:14 PM »
Hello dakong27

ADC: Analog to Digital Converter?

but it seems you connect pin 1 to your led...
you can't use the pin 1 when you use Serial!
cause Serial is on pin 1
use an analog out
Code: [Select]
#define led A0wire the led on A0...
and use it as a digital pin with
Code: [Select]
digitalWrite(led, HIGH)
my 2 cents

8
TinyLily / clock speed difference
« on: November 21, 2013, 05:47:21 PM »
Hello,

i've bought couple of tinylily and upload same sketch in it, but it seems the second is half speed!
Have to divide delay() by 2 to have something at the same speed!
Is it possible?
Not sure that the tinylily are coming from the same invoice but are both "rev2"
Any idea?

the only difference is the programming module not the same (i've bought 2 basic kit)

regards

éric

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